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October/ November dyno schedule &tc

10/2 Justin Full Power pump gas testing 4tec st1 & 2 turbo w/ low compression forged pistons. Finishing session from 9/30.10/2-10/31 Pro snoX engine testing, cams off. Yes one month except for the day we had to test Casey's 2010 spec Dragon 800 (see subscriber...

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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...

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“Turbo” Crankshafts, once more

Email from Jim C to Kevin Cameron:http://parrisracingconcepts.com/Home_Page.phpThis is the latest "turbo crank" deal, being aggressively marketed to snowmobile people now. Turbo crank mods are cicada-like, coming around, being promoted and talked about every few...

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June, July dyno schedule &tc

6/6 Sat Dave Waters/ RJ Overholt KTM 950 Vtwin flattrack bike w/ required inlet restrictors, Ron Jewell ported heads those nascar-like inlet restrictors hurt airflow and HP, and require vastly different jetting to achieve max HP--we got that perfect, but we can't...

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Dyno Calibration

DYNOTECH SF901 TORQUE CALIBRATION PROCEDURE     Our SuperFlow 901 engine dyno absorption unit has a capacity of 1,000 HP at up to 10,000 RPM. To enable us to properly test relatively small engines it’s been helpful for engine control, ease of operation, and...

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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...

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March 09 Dyno Schedule &tc

3/3 Tuesday Tripod Dan testing once more w/ HTG Storm 1000 Imp some new clicks of deto were cured by backed off timing--the tighter squish required retarded timing to be optimum,  Late AM Renegade Rich with MZ1000 N2O w/ better fuel pump now 518er Rich was able...

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February 09 dyno schedule

2/3 HTG 4cyl Scott Turner tuning for 400 tweaked fuel/ timing to 376 HP then twin MSD ignitions (necessary to fire quad at 90 degrees) pickup failed causing misfire then we had to stop because no spare pickups were available..2/4 private test 9-12 Intimidator Jim...

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Dragon 800 midrange PCIII mapping II

Here's Casey Mulkins' PCIII midrange tuning. These numbers have seemed to eliminate the part throttle surging he's had riding his sled with stock pipe and the 154hp WOT map.He tried the big numbers I punched in intuitively, and they were way too fat. He gradually...

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January 2009 dyno schedule

1/1 Bill Rogers stock Dragon 700 with reflash stock testing plus SLP and Dynoport pipes for PCIII mapping top end fuel is very safely overrich, see full report 1/2 private session, cams off 1/4 518ers Alan w/ Yamaha 700 Viper triple N2O made 159 na with Bender triple...

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One Cheater caught after the Shootout

 I have a difficult situation with the Arctic Cat Crossfire 1000 "stocker" brought in by Big Moose Arctic Cat at the 19th annual Adirondack Shootout. After reviewing the Shootout acceleration ET MPH data, I have to conclude that it was way too fast. It had to be...

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