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Axys 800HO troubleshooting....
Homing in on a few issues--primarily lack of HP on some engines. My cousin-in-law Bill Rogers had that first 85 mph Axys that his excellent dealer traded even-up for their 100+ mph demo sled. The dealer had used the demo sled as a donor--swapping every component possible from one to another--including a new wiring harness and still Bill's original sled runs 85 mph.
This week the dealer removed the exhaust valve operating cable from the motor and tie wrapped the valves open. Now it struggles to get going, but runs 100 mph+ on top end. So that one dyno test line in the graph (Todd's 1200 miler) on this website showing HP flatlining at about 120 HP is probably what was happening with Bill Rogers' machine all the time! Putting 120 HP worth of airflow to a set of clutches calibrated for 155 HP will surely result in underrevving, low MPH operation.
Another clue I picked up talking to some very smart dealer technicians is that some of the slow Axys' pick up speed as throttle opening is reduced! Perhaps if the ECU thinks valves are wide open and are delivering 85 lb/hr fuel flow, and the valves are partly closed the A/F ratio might be 11/1 instead of the optimal 13/1. Then, if exhaust valves are partially open, and throttle is closed slightly, fuel flow might drop some % causing A/F ratio to lean out and make more HP. Testing at part throttle shows identical peak RPM HP at 90% and 100% throttle!
Does that suggest that Todd's low HP Axys is due to exhaust valves not being fully open, or is it poor ring seal from lack of breakin? And does that explain why it took 75 full throttle dyno tests to bring Heath's Axys up 10 HP?
Some of the smart tech people who communicate with DTR suggest their may be an electrical system design issue that causes exhaust valves to fail to fully open initially (like Bill Rogers'), or to gradually close after extended operation at WOT. Could this explain the revs dropping after extended operation at WOT?
There's more to figure out, more to learn. But as always, this is just a machine.
August, September dyno schedule &tc wide open now.
8/7 Justin Full Power tuning on an Apex of some sort. 9am.
8/10 taking advantage of the Dyno Dog Days heading out with family to one of my favorite places Tobermory Ontario for a few days then taking the ferry north to drive west around to Michigan. Will try to see the Nationwide race on Sat if we can find a hotel around there for Friday night
8/18 Yamaha 450 flattrack bike
8/25-31 pro snoX engine testing cams off.
9/1 another Yam 450 flatrack bike
9/2 HTG Robbie Schooping w/ quad wheeler dragracer fitted with HTG XCR1200 triple dial in timing/ carbs
9/3 Dan Schuler PS800
9/11 Tripod Dan IS1000 still trying to make the big carbs he got from Rich Daly work.
9/11 pm Greg Y D&D mod Rev 800 dragracer
9/12 & 13 violent Stage II Velocity Racing Turbo Huyabusa, on Cycledyn eddy current roller dyno trying to tune out a lean bog.
Sept 17, 8 AM Glenn Hall back again w/ large turbo Z1Race this time with higher capacity fuel pump
Sept 18, 8am Justin Durand VMax 4 monster turbo, maybe a new overall HP record based upon track dyno results at Glenn Hall's
Sept 23 asphalt racer private test, cams off
Sept 24 Glenn Hall F1200 turbo tuning for Goldenchild Nats
Sept 30 Mark/ CJ Motorsports testing reeds/ pipes on XP800, PM Justin Fuller testing 4tek turbo on pummp gas w/ lower compression forged pistons...
August dyno schedule etc 8/9 Sat Dan Schuler PS800 cancelled, ignition not working
8/9 Last year Sean Ray replaced the Aerocharger on NASCAR sort-of-retired Buddy Parrott's HD Softail turbo S&S 113 with a GT25 Garrett for more HP and better longevity. Now Greedy BP wants more so Sean is installing a GT28. Since Dan cancelled, and BP is in Watkins Glenn this weekend Sean is tuning for big HP on the roller dyno Sat PM. tweaking up to 202 (on the way to 250 djrwhp) heard rattle in cam area, turned out to be bad cam bearing, so sean yanked it off, is rebushing cam cover, putting in a better turbo friendly cam from Zipper's, will dyno again later probably 8/15, maybe cams off because Sean doesn't want anyone to see his plenum/ intercooler/ scoop on the CV carb)
8/12-13 Private session, cams off
April, May 09 dyno schedule 4/6 Adam Schmitt XCR800 asphalt racer, new DynoPort mod pipes new 44 megatrons bought off the internet were totally goofed up--Tripod Dad loaned us a set of good ones, tuned to 217 but fuel flow was jumpy due to stiff mounts--will fix carbs and return..
4/18 Andy Caffaro XC 800 stocker with SLP twin pipes,s, tuned to 155hp with safe fuel flow on pump gas, then Andy removed a set of VIP wings from his carbs and picked up enough added airflow to make 158hp--you will see a set of VIPs on Ebay please don't bid on themthose wings also leaned out fuel flow so when Andy removed them he had to drop mains dramatically.
4/18 PM Andy's Dad Bruce Caffaro early HTG Storm 1000 lakeracer still competitive on the lakes with 255 na then a very small squirt of n2o = 295hp at nearly .70 lb/hphr...330 should be no problem if needed with a few sizes larger n2o funnel nozzles...
4/22 Tim and Brian Tyler trying for more HP with their PS1000 twin
4/23 Tripod Dan and Dan Forte, bone stock XCR800 engine with 15/1 compression ratio and 9200 RPM HTG mod pipesmakes 192hp on race gas with timing cranked to the stops and 44 megatrons
4/25 7am Adam Schmitt XCR800 mod one more time with his own carbs fixed, hoping to smooth out that fuel flow a bit. fuel flow was still unstable, dropping to near near zero at HP peak from foaming fuel...Adam is installing semi-hard rubber mounts this week, will try again sat AM...
9am Jack G Elite Motorsports 800 triple 225hp last time w/ DynoPort mod pipes, looking to find a reason for occasional seizures just too lean--90 lb/hr will never support 225hp so raised needles, and opened power jets and fuel flow increased to 115 lb/hr so this should be fine, wound up with 228
4/29 WEDNESDAY D&D/ Glenn Hall Z1 turbo w/ bigger turbo and intercooler etc, let's see what she will do! Also a new 2010 F8 with a D&D 901 big bore kit. 901 made 190plus on pump gas stock muffler, then the Z1 on pump gas w/ windshield washer fluid injection maxed out at 350hp--full dyno results on this website by 5/3
5/1 Jim Cooper PS1000 asphalt sled trying different carbs--CS56mm carbs helped create our first 290chp ps1000--solid mount SkiDoo stroker struggled with fuel flow until we hit the right combo of needle and seats and electric fuel pump pressure, one click of deto at 290 and no clicks at 286-288 so that's how it should run for 1/4 mile on asphalt.
5/2 After going to dragstrip after last dyno session and feeling the engine lay down before 1/8th mile, Adam Schmitt will try one more time, this time with semi-hard rubber mounts replacing the solid mounts, hoping to cure unusable fuel flow on his pol800 triple asphalt mod. Adam's new rubber mounts cured the foaming floatbowls--today the fuel flow was still not exactly perfect, but looks smooth enough and good for 1/4 mile blasts--then Adam went to the track and ran the best ET/MPH so far, no top end laziness.
5/6-10 gone pretend fishing in Alexandria Bay, NY
5/13 Brad Crocker ProX800 mod watercrosser, Stock bore, engine ported by Pausl Cross (Tripod Sr) and setup by Tripod Dan and Dan Forte, DynoPort twin pipes made 172 CHP needed exhaust valve springs removed to pick up 20 hp--stock valve springs were keeping valves closed with high flowing DP/HTG twin pipes, removing the springs ensured complete opening
pm Paul Cross F7 trailsled setup for backyard grassdrags. bone stock 03 F7 w/ 06 ECU flash, only mods are D&D Y pipe, BMP pipe mod, -20 slice off the head, 2 deg key...freshly installed hi comp head created heavy rattle of deto that we heard on detophones, aborted run at 7400 before damage. Turns out that the engine was airlocked--air trapped in the head allowed overheat of combustion chambers and instant detonation--saved by the copper tube! Air bleed hose from top of the head to coolant bottle was routed below the steering arm preventing air from escaping which is a common goof. That hose MUST be routed above the arm to ensure that trapped air can escape to the bottle. After we fixed the hose routing we were fat this time of year, and fixed the fatness with a D&D pac valve, dropped fuel pressure to 38 psi and made 163hp god for 500 ft in the grass.
5/14 two 607 asphalt sleds, just one today--Boyd McGarry's Dragon 800 stocker w/ SLP exhaust for PCIII tuning...very interesting that this one only needed a fraction of the leanout that we normally require for max HP with this setup. -5% at peak revs got us 13/1 A/F ratio! We tried another D8 ECU and tuning was the same! Today it was 70 degrees F, which is reportedly the exact temp that EPA tests are conducted at........could that explain the crisp fuel flow on this sled??
5/15 Kurt Walburn, pal of Billy Howard with one or two mod Yamaha Banshees, tune on the 901 shaft dyno. Kurts's Billet Trinity 610 came off the trailer at 138hp, went back on the trailer with 150plus with perfect timing and fuel flow. Brother Marty's Banshee w/ billet KT 775 twin was next, had new 48 Lectrons w/ way too lean needles--listening closely for deto on the phones, I missed the A/F gauge on the computer screen glowing red at 17/1 just as it seized. No deto to alarm me but wicked lean and hot enough to stick the piston. Will be back again w/ new piston and way richer needles
5/20 TR McGinnis tuning a YFZ450 on the 901 shaft dyno, connected to trans output shaft spline (don't call it a countershaft--that shat holds the clutch basket and rotates backwards, gear-driving the output shaft forward). ported head, aftermarket exhaust, no airbox, over 50 HP at the output shaft which is about the same as we get rear wheels with the DynoJet corrction
5/21 Dan Forte stock bore Banshee quad, tuning large Kehein carbs. Dynoport pipes, lots of compression, now 39 Keihins mad the clutch slip on the shaft dyno, but we got it tuned for max power at 13/1
5/29 Marty Walburn, violent drag banshee w/ 775 cc billet KT engine. that last session was only a piston replacement, no nickasil damage! Got a batch of richer needles from FBG and we'll try to get it tuned perfect on 5/29 got it perfect this time--perfect max HP fuel flow now w/ no clicks, max HP timing with no clicks
April dyno schedule, tailing off now monday 4/7 CJ motorsports or powersports (sorry can't remember which) from Booneville NY coming with new 09 SkiDoo 1200 four stroke. Arrival 2pm, run by 3pm. Live on dynocams. had it running by 3pm, but have an issue with max revs limited by ecu to 4500, runs perfect from idle to 4500 then two-steps there, must be issue with tether etc, CJ will come back tomorrow with BUDS computer, get it running then. Got it fixed, made 20 part throttle/ ful throttle dyno runs, similar hp to nytro but you have to see the comparison graphs to appreciate how different two identical HP engines can be.
.4/10 Thursday AM Brian Neuman, Yamaha 650 flat track bike for maxing our carb/ timing on Cycledyne eddy current roller owner of bike and driver Brian were there to max out HP, engine builder was 300 miles away, maxed out fuel flow but timing was fixed, a phone call to engine builder revealed he wanted timing left at x degrees leave it alone, he's never been to a dyno but I have dyno tuned 1000's of engines all make max HP at different timing even identical engines by identical builders, we just retard/ advance timing make max HP and drive it there. Bike owner will be back with adjustable stator plate will dyno test again. PM Rob Randal F7 mod asphalt racer for Boondocker tuning Rob had Cat 800 big bore (snoX?) cylinders, touched up by HTG, with best (for this engine) single pipe boondockered perfectly made 167 HP but at low 7600 RPM even with stock timing. Maybe compression too high?
.Denny Richards, new 08 HD NightRod with Turbo Connection Aerocharger system.used the onboard boost power commander to tweak midrange A/F ratio, got rid of a few rich burbles by tuning with PC connected to power commander, did a few WOT sweep tests made 160 HP at rear tire on pump gas. Perfect tuneup.
.4/15 Tuesday Bill Woodley H-D twin cam Delphi EFI, testing/ tuning several exhaust systems including stock, Screamin Eagle, V&H, also several intakes/ filters, all tuning by power Commander learned lots about mufflers, air filters, power commander tuning is easy, allowing quick alteration of fuel and timing maps (we need power commander-like piggy back devices for our efi two and four stroke sleds).
4/17 Thurs AM Bill Chesney, Engine Tech F7/F9 single pipe asphalt racer, tuning with N2O. textbook tuneup--started with someone's recommended boondocker settings 144hp then tweaked and tuned to 172 with fatazz single, added 60 hp with 10 boondocker n2o nozzle holes, fattened that up to a total of 226 at .60 plus lb/hphr.
4/19 Sat AM Richard Weiss, SkiDoo 800 twin hill-dragracer verifying [seemingly too-high] dyno numbers from the engine builder. Richard's intuition and his butt dyno were correct--the engine builder had it dynod for him for $350 somewhere east of here, 115 lb/ft and 185-190hp but it didn't run like 185 in the field. Today after optimizing Richard's carburetion my dyno [calibrated correctly as it always is] indicates 109 /b/ft 172 HP.
.4/24 Tues AM Yam YZ250 flatracker, added 8% HP optimizing fuel and timing
4/25 Wed AM doing more EFI fine tuning on my Triumph Tiger turbo to improve cruising mileage
.4/29 Tues AM Casey Mulkins (tentative) bringing the Dragon 800 back to try a production 09 ECU and SLP y pipe and can. We'll post on DTR compare fuel flow/ timing etc 08.5 preproduction vs 09 production. you Polaris Dragon 800 buyers who insist on leaving it bone bone stock might not be totally pleased, but those who will spend $200 on the BMP pipe mod will be thrilled with the 09 ECU programming which now appears fat enough to safely support 154 HP.
.4/30 Greg Bennett one more time with Polaris twin with Aerodyne 66. this is about the third trip to the dyno in the current state of tune 930cc big bore, the last two ended with seizures first clearance too tight (.001" doesnt cut it with a big bore forged pistons) second severe deto at 6500 on boost. Now with proper clearance (thanks to Carl McQuillen's diamond hone) and a proper midrange ignition timing curve, tuned up to 333 HP and 213 lb/ft (new HTG single pipe created higher RPM HP peak than what we had when engine was tested earlier and posted on subscriber pages) now the Aerodyne model 66 has its tongue hanging out at 560 SCFM.
.
here's a good short article on gasoline I lifted off of AmSnow.
http://en.wikipedia.org/wiki/Octane_rating
another Shootout update I just came home after meeting Tim Erikson (one K) at the dyno in
Batavia NY.. Tim flew into White Plains NY Monday, picked up the GM
loaner truck, drove to Old Forge, spent the night, picked up a four
place trailer at White Lake Polaris, picked up three sleds from Big
Moose Yamaha/ Arctic Cat, visited/ phoned dealers/ factories
regarding random sled swaps, drove 200 miles to Batavia,
dropped off two sleds that will be swapped at other NE
dealers Friday. Tim is now hammer-down back to Old Forge
200 miles, but I'm hoping he will sack out at some Motel 6 before
that, tomorrow picking up four more sleds, working his way back
will swap two sleds at NY dealers, drive back to Batavia Wed afternoon,
drop off two sleds for me to dyno certify Thursday AM, I will give Tim
a ride to Buffalo airport for his flight back home while Dave Wells
picks up truck and trailer and sleds at the dyno and heads to the next
dealer swap.
Thursday AM begin dyno certification--two sleds to dyno that AM (watch
dynocams). Then Dave will hopefully be back with a few more sleds to
dyno, then swap some more at other dealers (as far as 300 miles from
here!) then back again to the dyno.
With some luck, I'll get all dyno certification done Thursday/ Friday,
and stragglers Saturday, then somehow deliver all certified normal
sleds to Big Moose Yam for Sunday studding/ final tech/ weighing on
Buzz Chew's nascar scales.
another F7 150hp stocker Paul and Dan Cross came today, dyno'd Pauls newly acquired 04 F7 EFI
with reprogrammed ECU supposedly to 05 specs. This one made 144 w/
94-95 lb/hr no key. Made 150 w/ newest Bikeman F7 modified single I
have hanging on my pipe rack. D&D Y added a horse and a half to the
stock pipe (145.2) and 2 lb/ft torque. Then the D&D Y added a
couple of HP to the Bikeman mod stock single, to 152 and change
at higher revs 8100+ where fuel flow was dropping to 13/1 A/F. It
was still OK for 20 seconds WOT 93 octane, but Paul is going to
play it safe, get onother stock pipe to have modified for
dragracing at 152 HP, keep his stock pipe for trailriding at 145
HP. No Boondocker was needed and NO FUEL CHOKE ALLOWED. I never thought
to try the ethanol mode to see if we could have dropped the Bikeman/
D&D Y setup into the 12/1 range and 150 HP which could have been
Paul's trail combo.
Tomorrow, Scott Lyons is coming in the afternoon with a more modded F7 with more stuff including Speedwerx single/ D&D Y.
Wednesday late afternoon, Sean Ray is bringing in a stock 04 F6
carbed, we may have a new F6 pipe from D&D by then that is
supposed to be good for some extra HP.
AmSnow/DTR Shootout at Woodgate NY TURBO TIME AT THE ADIRONDACK SHOOTOUT
8/9 Last year Sean Ray replaced the Aerocharger on NASCAR sort-of-retired Buddy Parrott's HD Softail turbo S&S 113 with a GT25 Garrett for more HP and better longevity. Now Greedy BP wants more so Sean is installing a GT28. Since Dan cancelled, and BP is in Watkins Glenn this weekend Sean is tuning for big HP on the roller dyno Sat PM. tweaking up to 202 (on the way to 250 djrwhp) heard rattle in cam area, turned out to be bad cam bearing, so sean yanked it off, is rebushing cam cover, putting in a better turbo friendly cam from Zipper's, will dyno again later probably 8/15, maybe cams off because Sean doesn't want anyone to see his plenum/ intercooler/ scoop on the CV carb)
8/12-13 Private session, cams off
April, May 09 dyno schedule 4/6 Adam Schmitt XCR800 asphalt racer, new DynoPort mod pipes new 44 megatrons bought off the internet were totally goofed up--Tripod Dad loaned us a set of good ones, tuned to 217 but fuel flow was jumpy due to stiff mounts--will fix carbs and return..
4/18 Andy Caffaro XC 800 stocker with SLP twin pipes,s, tuned to 155hp with safe fuel flow on pump gas, then Andy removed a set of VIP wings from his carbs and picked up enough added airflow to make 158hp--you will see a set of VIPs on Ebay please don't bid on themthose wings also leaned out fuel flow so when Andy removed them he had to drop mains dramatically.
4/18 PM Andy's Dad Bruce Caffaro early HTG Storm 1000 lakeracer still competitive on the lakes with 255 na then a very small squirt of n2o = 295hp at nearly .70 lb/hphr...330 should be no problem if needed with a few sizes larger n2o funnel nozzles...
4/22 Tim and Brian Tyler trying for more HP with their PS1000 twin
4/23 Tripod Dan and Dan Forte, bone stock XCR800 engine with 15/1 compression ratio and 9200 RPM HTG mod pipesmakes 192hp on race gas with timing cranked to the stops and 44 megatrons
4/25 7am Adam Schmitt XCR800 mod one more time with his own carbs fixed, hoping to smooth out that fuel flow a bit. fuel flow was still unstable, dropping to near near zero at HP peak from foaming fuel...Adam is installing semi-hard rubber mounts this week, will try again sat AM...
9am Jack G Elite Motorsports 800 triple 225hp last time w/ DynoPort mod pipes, looking to find a reason for occasional seizures just too lean--90 lb/hr will never support 225hp so raised needles, and opened power jets and fuel flow increased to 115 lb/hr so this should be fine, wound up with 228
4/29 WEDNESDAY D&D/ Glenn Hall Z1 turbo w/ bigger turbo and intercooler etc, let's see what she will do! Also a new 2010 F8 with a D&D 901 big bore kit. 901 made 190plus on pump gas stock muffler, then the Z1 on pump gas w/ windshield washer fluid injection maxed out at 350hp--full dyno results on this website by 5/3
5/1 Jim Cooper PS1000 asphalt sled trying different carbs--CS56mm carbs helped create our first 290chp ps1000--solid mount SkiDoo stroker struggled with fuel flow until we hit the right combo of needle and seats and electric fuel pump pressure, one click of deto at 290 and no clicks at 286-288 so that's how it should run for 1/4 mile on asphalt.
5/2 After going to dragstrip after last dyno session and feeling the engine lay down before 1/8th mile, Adam Schmitt will try one more time, this time with semi-hard rubber mounts replacing the solid mounts, hoping to cure unusable fuel flow on his pol800 triple asphalt mod. Adam's new rubber mounts cured the foaming floatbowls--today the fuel flow was still not exactly perfect, but looks smooth enough and good for 1/4 mile blasts--then Adam went to the track and ran the best ET/MPH so far, no top end laziness.
5/6-10 gone pretend fishing in Alexandria Bay, NY
5/13 Brad Crocker ProX800 mod watercrosser, Stock bore, engine ported by Pausl Cross (Tripod Sr) and setup by Tripod Dan and Dan Forte, DynoPort twin pipes made 172 CHP needed exhaust valve springs removed to pick up 20 hp--stock valve springs were keeping valves closed with high flowing DP/HTG twin pipes, removing the springs ensured complete opening
pm Paul Cross F7 trailsled setup for backyard grassdrags. bone stock 03 F7 w/ 06 ECU flash, only mods are D&D Y pipe, BMP pipe mod, -20 slice off the head, 2 deg key...freshly installed hi comp head created heavy rattle of deto that we heard on detophones, aborted run at 7400 before damage. Turns out that the engine was airlocked--air trapped in the head allowed overheat of combustion chambers and instant detonation--saved by the copper tube! Air bleed hose from top of the head to coolant bottle was routed below the steering arm preventing air from escaping which is a common goof. That hose MUST be routed above the arm to ensure that trapped air can escape to the bottle. After we fixed the hose routing we were fat this time of year, and fixed the fatness with a D&D pac valve, dropped fuel pressure to 38 psi and made 163hp god for 500 ft in the grass.
5/14 two 607 asphalt sleds, just one today--Boyd McGarry's Dragon 800 stocker w/ SLP exhaust for PCIII tuning...very interesting that this one only needed a fraction of the leanout that we normally require for max HP with this setup. -5% at peak revs got us 13/1 A/F ratio! We tried another D8 ECU and tuning was the same! Today it was 70 degrees F, which is reportedly the exact temp that EPA tests are conducted at........could that explain the crisp fuel flow on this sled??
5/15 Kurt Walburn, pal of Billy Howard with one or two mod Yamaha Banshees, tune on the 901 shaft dyno. Kurts's Billet Trinity 610 came off the trailer at 138hp, went back on the trailer with 150plus with perfect timing and fuel flow. Brother Marty's Banshee w/ billet KT 775 twin was next, had new 48 Lectrons w/ way too lean needles--listening closely for deto on the phones, I missed the A/F gauge on the computer screen glowing red at 17/1 just as it seized. No deto to alarm me but wicked lean and hot enough to stick the piston. Will be back again w/ new piston and way richer needles
5/20 TR McGinnis tuning a YFZ450 on the 901 shaft dyno, connected to trans output shaft spline (don't call it a countershaft--that shat holds the clutch basket and rotates backwards, gear-driving the output shaft forward). ported head, aftermarket exhaust, no airbox, over 50 HP at the output shaft which is about the same as we get rear wheels with the DynoJet corrction
5/21 Dan Forte stock bore Banshee quad, tuning large Kehein carbs. Dynoport pipes, lots of compression, now 39 Keihins mad the clutch slip on the shaft dyno, but we got it tuned for max power at 13/1
5/29 Marty Walburn, violent drag banshee w/ 775 cc billet KT engine. that last session was only a piston replacement, no nickasil damage! Got a batch of richer needles from FBG and we'll try to get it tuned perfect on 5/29 got it perfect this time--perfect max HP fuel flow now w/ no clicks, max HP timing with no clicks
April dyno schedule, tailing off now monday 4/7 CJ motorsports or powersports (sorry can't remember which) from Booneville NY coming with new 09 SkiDoo 1200 four stroke. Arrival 2pm, run by 3pm. Live on dynocams. had it running by 3pm, but have an issue with max revs limited by ecu to 4500, runs perfect from idle to 4500 then two-steps there, must be issue with tether etc, CJ will come back tomorrow with BUDS computer, get it running then. Got it fixed, made 20 part throttle/ ful throttle dyno runs, similar hp to nytro but you have to see the comparison graphs to appreciate how different two identical HP engines can be.
.4/10 Thursday AM Brian Neuman, Yamaha 650 flat track bike for maxing our carb/ timing on Cycledyne eddy current roller owner of bike and driver Brian were there to max out HP, engine builder was 300 miles away, maxed out fuel flow but timing was fixed, a phone call to engine builder revealed he wanted timing left at x degrees leave it alone, he's never been to a dyno but I have dyno tuned 1000's of engines all make max HP at different timing even identical engines by identical builders, we just retard/ advance timing make max HP and drive it there. Bike owner will be back with adjustable stator plate will dyno test again. PM Rob Randal F7 mod asphalt racer for Boondocker tuning Rob had Cat 800 big bore (snoX?) cylinders, touched up by HTG, with best (for this engine) single pipe boondockered perfectly made 167 HP but at low 7600 RPM even with stock timing. Maybe compression too high?
.Denny Richards, new 08 HD NightRod with Turbo Connection Aerocharger system.used the onboard boost power commander to tweak midrange A/F ratio, got rid of a few rich burbles by tuning with PC connected to power commander, did a few WOT sweep tests made 160 HP at rear tire on pump gas. Perfect tuneup.
.4/15 Tuesday Bill Woodley H-D twin cam Delphi EFI, testing/ tuning several exhaust systems including stock, Screamin Eagle, V&H, also several intakes/ filters, all tuning by power Commander learned lots about mufflers, air filters, power commander tuning is easy, allowing quick alteration of fuel and timing maps (we need power commander-like piggy back devices for our efi two and four stroke sleds).
4/17 Thurs AM Bill Chesney, Engine Tech F7/F9 single pipe asphalt racer, tuning with N2O. textbook tuneup--started with someone's recommended boondocker settings 144hp then tweaked and tuned to 172 with fatazz single, added 60 hp with 10 boondocker n2o nozzle holes, fattened that up to a total of 226 at .60 plus lb/hphr.
4/19 Sat AM Richard Weiss, SkiDoo 800 twin hill-dragracer verifying [seemingly too-high] dyno numbers from the engine builder. Richard's intuition and his butt dyno were correct--the engine builder had it dynod for him for $350 somewhere east of here, 115 lb/ft and 185-190hp but it didn't run like 185 in the field. Today after optimizing Richard's carburetion my dyno [calibrated correctly as it always is] indicates 109 /b/ft 172 HP.
.4/24 Tues AM Yam YZ250 flatracker, added 8% HP optimizing fuel and timing
4/25 Wed AM doing more EFI fine tuning on my Triumph Tiger turbo to improve cruising mileage
.4/29 Tues AM Casey Mulkins (tentative) bringing the Dragon 800 back to try a production 09 ECU and SLP y pipe and can. We'll post on DTR compare fuel flow/ timing etc 08.5 preproduction vs 09 production. you Polaris Dragon 800 buyers who insist on leaving it bone bone stock might not be totally pleased, but those who will spend $200 on the BMP pipe mod will be thrilled with the 09 ECU programming which now appears fat enough to safely support 154 HP.
.4/30 Greg Bennett one more time with Polaris twin with Aerodyne 66. this is about the third trip to the dyno in the current state of tune 930cc big bore, the last two ended with seizures first clearance too tight (.001" doesnt cut it with a big bore forged pistons) second severe deto at 6500 on boost. Now with proper clearance (thanks to Carl McQuillen's diamond hone) and a proper midrange ignition timing curve, tuned up to 333 HP and 213 lb/ft (new HTG single pipe created higher RPM HP peak than what we had when engine was tested earlier and posted on subscriber pages) now the Aerodyne model 66 has its tongue hanging out at 560 SCFM.
.
here's a good short article on gasoline I lifted off of AmSnow.
http://en.wikipedia.org/wiki/Octane_rating
another Shootout update I just came home after meeting Tim Erikson (one K) at the dyno in
Batavia NY.. Tim flew into White Plains NY Monday, picked up the GM
loaner truck, drove to Old Forge, spent the night, picked up a four
place trailer at White Lake Polaris, picked up three sleds from Big
Moose Yamaha/ Arctic Cat, visited/ phoned dealers/ factories
regarding random sled swaps, drove 200 miles to Batavia,
dropped off two sleds that will be swapped at other NE
dealers Friday. Tim is now hammer-down back to Old Forge
200 miles, but I'm hoping he will sack out at some Motel 6 before
that, tomorrow picking up four more sleds, working his way back
will swap two sleds at NY dealers, drive back to Batavia Wed afternoon,
drop off two sleds for me to dyno certify Thursday AM, I will give Tim
a ride to Buffalo airport for his flight back home while Dave Wells
picks up truck and trailer and sleds at the dyno and heads to the next
dealer swap.
Thursday AM begin dyno certification--two sleds to dyno that AM (watch
dynocams). Then Dave will hopefully be back with a few more sleds to
dyno, then swap some more at other dealers (as far as 300 miles from
here!) then back again to the dyno.
With some luck, I'll get all dyno certification done Thursday/ Friday,
and stragglers Saturday, then somehow deliver all certified normal
sleds to Big Moose Yam for Sunday studding/ final tech/ weighing on
Buzz Chew's nascar scales.
another F7 150hp stocker Paul and Dan Cross came today, dyno'd Pauls newly acquired 04 F7 EFI
with reprogrammed ECU supposedly to 05 specs. This one made 144 w/
94-95 lb/hr no key. Made 150 w/ newest Bikeman F7 modified single I
have hanging on my pipe rack. D&D Y added a horse and a half to the
stock pipe (145.2) and 2 lb/ft torque. Then the D&D Y added a
couple of HP to the Bikeman mod stock single, to 152 and change
at higher revs 8100+ where fuel flow was dropping to 13/1 A/F. It
was still OK for 20 seconds WOT 93 octane, but Paul is going to
play it safe, get onother stock pipe to have modified for
dragracing at 152 HP, keep his stock pipe for trailriding at 145
HP. No Boondocker was needed and NO FUEL CHOKE ALLOWED. I never thought
to try the ethanol mode to see if we could have dropped the Bikeman/
D&D Y setup into the 12/1 range and 150 HP which could have been
Paul's trail combo.
Tomorrow, Scott Lyons is coming in the afternoon with a more modded F7 with more stuff including Speedwerx single/ D&D Y.
Wednesday late afternoon, Sean Ray is bringing in a stock 04 F6
carbed, we may have a new F6 pipe from D&D by then that is
supposed to be good for some extra HP.
AmSnow/DTR Shootout at Woodgate NY TURBO TIME AT THE ADIRONDACK SHOOTOUT
.4/10 Thursday AM Brian Neuman, Yamaha 650 flat track bike for maxing our carb/ timing on Cycledyne eddy current roller owner of bike and driver Brian were there to max out HP, engine builder was 300 miles away, maxed out fuel flow but timing was fixed, a phone call to engine builder revealed he wanted timing left at x degrees leave it alone, he's never been to a dyno but I have dyno tuned 1000's of engines all make max HP at different timing even identical engines by identical builders, we just retard/ advance timing make max HP and drive it there. Bike owner will be back with adjustable stator plate will dyno test again. PM Rob Randal F7 mod asphalt racer for Boondocker tuning Rob had Cat 800 big bore (snoX?) cylinders, touched up by HTG, with best (for this engine) single pipe boondockered perfectly made 167 HP but at low 7600 RPM even with stock timing. Maybe compression too high?
.Denny Richards, new 08 HD NightRod with Turbo Connection Aerocharger system.used the onboard boost power commander to tweak midrange A/F ratio, got rid of a few rich burbles by tuning with PC connected to power commander, did a few WOT sweep tests made 160 HP at rear tire on pump gas. Perfect tuneup.
.4/15 Tuesday Bill Woodley H-D twin cam Delphi EFI, testing/ tuning several exhaust systems including stock, Screamin Eagle, V&H, also several intakes/ filters, all tuning by power Commander learned lots about mufflers, air filters, power commander tuning is easy, allowing quick alteration of fuel and timing maps (we need power commander-like piggy back devices for our efi two and four stroke sleds).
4/17 Thurs AM Bill Chesney, Engine Tech F7/F9 single pipe asphalt racer, tuning with N2O. textbook tuneup--started with someone's recommended boondocker settings 144hp then tweaked and tuned to 172 with fatazz single, added 60 hp with 10 boondocker n2o nozzle holes, fattened that up to a total of 226 at .60 plus lb/hphr.
4/19 Sat AM Richard Weiss, SkiDoo 800 twin hill-dragracer verifying [seemingly too-high] dyno numbers from the engine builder. Richard's intuition and his butt dyno were correct--the engine builder had it dynod for him for $350 somewhere east of here, 115 lb/ft and 185-190hp but it didn't run like 185 in the field. Today after optimizing Richard's carburetion my dyno [calibrated correctly as it always is] indicates 109 /b/ft 172 HP.
.4/24 Tues AM Yam YZ250 flatracker, added 8% HP optimizing fuel and timing
4/25 Wed AM doing more EFI fine tuning on my Triumph Tiger turbo to improve cruising mileage
.4/29 Tues AM Casey Mulkins (tentative) bringing the Dragon 800 back to try a production 09 ECU and SLP y pipe and can. We'll post on DTR compare fuel flow/ timing etc 08.5 preproduction vs 09 production. you Polaris Dragon 800 buyers who insist on leaving it bone bone stock might not be totally pleased, but those who will spend $200 on the BMP pipe mod will be thrilled with the 09 ECU programming which now appears fat enough to safely support 154 HP.
.4/30 Greg Bennett one more time with Polaris twin with Aerodyne 66. this is about the third trip to the dyno in the current state of tune 930cc big bore, the last two ended with seizures first clearance too tight (.001" doesnt cut it with a big bore forged pistons) second severe deto at 6500 on boost. Now with proper clearance (thanks to Carl McQuillen's diamond hone) and a proper midrange ignition timing curve, tuned up to 333 HP and 213 lb/ft (new HTG single pipe created higher RPM HP peak than what we had when engine was tested earlier and posted on subscriber pages) now the Aerodyne model 66 has its tongue hanging out at 560 SCFM.
.
here's a good short article on gasoline I lifted off of AmSnow.
http://en.wikipedia.org/wiki/Octane_rating
another Shootout update I just came home after meeting Tim Erikson (one K) at the dyno in
Batavia NY.. Tim flew into White Plains NY Monday, picked up the GM
loaner truck, drove to Old Forge, spent the night, picked up a four
place trailer at White Lake Polaris, picked up three sleds from Big
Moose Yamaha/ Arctic Cat, visited/ phoned dealers/ factories
regarding random sled swaps, drove 200 miles to Batavia,
dropped off two sleds that will be swapped at other NE
dealers Friday. Tim is now hammer-down back to Old Forge
200 miles, but I'm hoping he will sack out at some Motel 6 before
that, tomorrow picking up four more sleds, working his way back
will swap two sleds at NY dealers, drive back to Batavia Wed afternoon,
drop off two sleds for me to dyno certify Thursday AM, I will give Tim
a ride to Buffalo airport for his flight back home while Dave Wells
picks up truck and trailer and sleds at the dyno and heads to the next
dealer swap.
Thursday AM begin dyno certification--two sleds to dyno that AM (watch
dynocams). Then Dave will hopefully be back with a few more sleds to
dyno, then swap some more at other dealers (as far as 300 miles from
here!) then back again to the dyno.
With some luck, I'll get all dyno certification done Thursday/ Friday,
and stragglers Saturday, then somehow deliver all certified normal
sleds to Big Moose Yam for Sunday studding/ final tech/ weighing on
Buzz Chew's nascar scales.
another F7 150hp stocker Paul and Dan Cross came today, dyno'd Pauls newly acquired 04 F7 EFI
with reprogrammed ECU supposedly to 05 specs. This one made 144 w/
94-95 lb/hr no key. Made 150 w/ newest Bikeman F7 modified single I
have hanging on my pipe rack. D&D Y added a horse and a half to the
stock pipe (145.2) and 2 lb/ft torque. Then the D&D Y added a
couple of HP to the Bikeman mod stock single, to 152 and change
at higher revs 8100+ where fuel flow was dropping to 13/1 A/F. It
was still OK for 20 seconds WOT 93 octane, but Paul is going to
play it safe, get onother stock pipe to have modified for
dragracing at 152 HP, keep his stock pipe for trailriding at 145
HP. No Boondocker was needed and NO FUEL CHOKE ALLOWED. I never thought
to try the ethanol mode to see if we could have dropped the Bikeman/
D&D Y setup into the 12/1 range and 150 HP which could have been
Paul's trail combo.
Tomorrow, Scott Lyons is coming in the afternoon with a more modded F7 with more stuff including Speedwerx single/ D&D Y.
Wednesday late afternoon, Sean Ray is bringing in a stock 04 F6
carbed, we may have a new F6 pipe from D&D by then that is
supposed to be good for some extra HP.
AmSnow/DTR Shootout at Woodgate NY TURBO TIME AT THE ADIRONDACK SHOOTOUT
Tomorrow, Scott Lyons is coming in the afternoon with a more modded F7 with more stuff including Speedwerx single/ D&D Y.
Wednesday late afternoon, Sean Ray is bringing in a stock 04 F6 carbed, we may have a new F6 pipe from D&D by then that is supposed to be good for some extra HP.
AmSnow/DTR Shootout at Woodgate NY TURBO TIME AT THE ADIRONDACK SHOOTOUT
This is an invitation for all Arctic Cat Turbo commercial tuners/ modifiers/ manufacturers of mufflers, intercoolers, etc to bring a true trailable turbo Cat to this year’s AmSnow/DynoTech Research Shootout at Woodgate. AmSnow editors Mark Boncher and Mark Savage are working with us to make this possibly the most entertaining Shootout in 22 years. Or is it 23 years? I’ve lost track!
The plan is to offer FREE ENTRY to any company that wants to show off the performance capability of their Cat Turbo tuning and parts. For the “TURBO TIME SHOOTOUT”, the participating company is only required to be a minor advertiser in AmSnow (such as a website banner advertiser) instead of the display ad requirement! Thanks to AmSnow for cutting some slack this year to make this a no-brainer for any company that deals with Cat turbo stuff!
The concept is to have equal weight stock chassis sleds with STOCK TURBO, stock OEM track with trail carbide studs, some acceptable minimum weight, a real muffler of some sort, and anything else should be OK. No other power adders, lowered 2” maximum from stock at each end. Anything else?
We’re looking for feedback from interested aftermarket companies. So far I’ve communicated with D&D, JD Powersports, and Arctic Adventures (new U.S. distributors for Canada’s Turbo Dynamics) and all are committing to participate.
There will be LARGE separate trophies for FASTEST M.P.H. and for QUICKEST E.T. in 660 FT.
Also, any aftermarket company wanting to showcase higher power (ie: large turbo) sleds can run them in the lakeracer class, where anything goes. And, we’ll still be running true pump gas trail mod sleds as we’ve done for many years. Those sleds cost $500 each to demonstrate, with awards for many "classes" given out at the Shootout banquet.
Interested companies can call me at 585-993-2777 or email me at info@dynotechresearch.com
On a sad note, our Shootout partner (since Shootout #1) and good pal George Taylor died of heart failure last week. George's long time friend Tom Smith is going to handle George's Shootout work this year.
AmSnow/ DTR Adirondack Shootout This December, the Adirondack Shootout in Woodgate, NY, will once again be hosted/ covered this year by American Snowmobiler Magazine and the AmSnow website.
When our pal Jerry Bassett sold American Snowmobiler a few years back, the new owners opted to skip covering the Shootout, and we found a fine partner in SnowWeek/ SnowGoer Magazines. Tim Erickson and crew covered the Shootout for several years, but now that SnowWeek is no longer being published, we lost our instant publicity that our aftermarket participants/ companies desired. SnowGoer will not return as our publishing partner.
Instead, we've renewed our relationship with American Snowmobiler, who began the Adirondack/ Old Forge, NY Shootout 18 years ago with DynoTech Jim, George Taylor (then owner of Shootout Headquarters Van Aukens Inne), and the sled dealers in the Old Forge area. [Big Moose Yamaha/ Cat, White Lake Polaris, Smith Marine (again) SkiDoo]. AmSnow editor Mark Boncher suggested that AmSnow website can provide instant results of the Shootout, and the magazine article is planned to be featured in late January.
We're still finializing plans for the Shootout, but our initial concept is to run all 600 stockers, 800cc stockers, and all four strokes.
Aftermarket trail/ lake mods will be provided by aftermarket companies who agree to place a 1/6th page display ad in American Snowmobiler (that's always been their prerequisite). There is some discussion of bolting aftermarket parts on the Shootout stockers, for back to back upgrade results. We'll have awards for various categories as entrants are solidified.
In addition, we're planning to have up to 10 consumer-owned lakeracer sleds, each sponsored by one or more of the aftermarket companies in the Shootout. This is a 660ft deal, anything goes, full body required situp style, 3" front and rear travel, full length skis. Trophies for these sleds will be best ET, and separately best MPH, two stroke NA, two stroke power adder, four stroke power adder.
This year, the Official Shootout Motel Headquarters is the North Woods Motel/ Restaurant/ Cocktail lounge in Old Forge. Van Aukens Inne is no longer part of our program. The Shootout Banquet is scheduled for Friday night at the Trail's End Restaurant in downtown Old Forge.
Amsnow Shootout mod sleds 12/12
As has been their requirement since including aftermarket demos
years ago, AmSnow requires aftermarket participants to be display
advertisers. The minimum is 1/6th page in the February issue, on the
stands in January. Closing for add space commitment is 11/25. Plus $500
per sled to Shootout Committee.
In solid:
D&D Z1turbo pump gas, one with race gas, Xfire 800 with mods maybe 901 big bore, Lakeracer Tony Koz' Big Cat turbo
Boondocker: Crossfire turbo
CJ Motorsports/ Full Power [stage 1 turbo 4Tek, stage 2 turbo 4Tek], lake racer Full Power apex turbo Mark Tangas
DynoPort
Dragon 800 w/ DP single pipe, XP800 with DP single pipe, BJ XP860 with
DP single pipe, lakeracers: HTG 4 cylinder 400hp al motor, Rich's 1000
triple very lightweight lakeracer
Bikeman Xfire 1000 with bolt-ons, Dragon 800 with BMP single pipe, SkiDoo800R/880, SkiDooTNT posible
Boyesen Reeds: RK Tek XP860 with Jaws twin pipes
Tentative:
SLP cancelled
Ulmer Racing havent heard anything
As has been their requirement since including aftermarket demos years ago, AmSnow requires aftermarket participants to be display advertisers. The minimum is 1/6th page in the February issue, on the stands in January. Closing for add space commitment is 11/25. Plus $500 per sled to Shootout Committee.
In solid:
D&D Z1turbo pump gas, one with race gas, Xfire 800 with mods maybe 901 big bore, Lakeracer Tony Koz' Big Cat turbo
Boondocker: Crossfire turbo
CJ Motorsports/ Full Power [stage 1 turbo 4Tek, stage 2 turbo 4Tek], lake racer Full Power apex turbo Mark Tangas
DynoPort Dragon 800 w/ DP single pipe, XP800 with DP single pipe, BJ XP860 with DP single pipe, lakeracers: HTG 4 cylinder 400hp al motor, Rich's 1000 triple very lightweight lakeracer
Bikeman Xfire 1000 with bolt-ons, Dragon 800 with BMP single pipe, SkiDoo800R/880, SkiDooTNT posible
Boyesen Reeds: RK Tek XP860 with Jaws twin pipes
Tentative:
SLP cancelled
Ulmer Racing havent heard anything
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