Motorcycles, Snowmobiles, Go-Carts, ATV's and Golf Carts - Heat Problem In Start Mobike

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rahil_smart
11-02-05, 04:41 AM
HELLO GUYS
i have YAMAHA 350 cc, 2 stroke motorcycle. so i hv changed the piston to smaller one. i ean i have reduced the cc of my bike. the problem is when i start my bike.. the exaust pipe heat u p very high. pipe gone red within 2 minutes. i have tune both pistons and points.
piston heights are same as original pistion
transfer ports are same as original piston
bore is less thn original piston
also i have changed the sleave of cylinders. right now sleave is thick thn before.
i m waiting for expert advice
thanx

rahiil_smart22ii@yahoo.com

Tornerito
11-02-05, 06:05 AM
well what ever it is I wouln't try starting it again till its fixed, red hot pipe, cool besides, what do you want a smaller engine for?
tornerito
kartracer55
11-02-05, 01:34 PM
running lean as hell is all I can think off... My kart motor is a 100cc yamaha and the exhaust on that thing has never even come close to getting red hot even after races in the dead heat of summer.

Jim