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Ski-Doo 850 Clutch Kit iBackshift – Pdrive 990 vs 965 ramps

I get people over several winters asking me this question about 990’s vs 965. I made a “canned speech” so I can cut-n-paste it into my emails when this question arises. Figured i’d put it up to read here too… It looks like your Summit 850...

Ski-Doo 850 Y Pipe, Ski-Doo 800 Y Pipe etc…

GIT THIS HERE “WOW-PIPE” FOR OWNY $299.  BUT WAIT!  IF YOU’ALL BUY IN THE NEXT 10 MINITZ, AH REPEAT, IN THE NEXT………“TAIN MINNITZ”…., ‘cause we cain’t do this all day now, THEN YOU CAN GIT AR “DUBBLE…SECRIT…TALEPIPE” TO GO WITH AR “WOW-PIPE”, FER OWNY $259. THAIT’S...

Ski-Doo 850 pipe, 850 turbo Pipe aftermarket

Want to read an in-control rant?  Read on… Pipe Temperature and Clutch Performance On the dyno, an engine operating at a hot coolant temperature with a cool pipe exhibits a different performance curve than an engine with a hot pipe. This discrepancy becomes...

Helix/Cam

Helix – Helix and engine power peak  Exhaust pipe temperature influences the RPM that peak horsepower occurs at. The engine starts, exhaust gas starts to enter the pipe. Heat transfers from the exhaust gas to the wall of the pipe. The pipe starts to warm up....

Shift Ratio

Shift Ratio; this page is to show how powerful the [what I affectionately call ] “Felt Marker Trick” is. This is part of chapter 6 out of my [incomplete, always adding to] clutch tuning handbook. 06 – The Driver The Driver (primary) (AAEN) 06-01: The...