[Vito's vs wiseco] - ATV Riders Forums - Honda, Yamaha, Suzuki, Kawasaki, Polaris, CanAm, Arctic Cat, Kymco ATVs

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Vito's vs wiseco
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Posted by: taylorman32

Fixen to rebuild my motor, sleeve/piston, want to know pros and cons to both ways and which is gunna make more power. Gunna run the same bore(.40).

Posted by: Modifly

WISECO.

Vitos pistons have machined domes that cause detonation problemes and screw up your engine, you have to keep the mix rich and the jetting high just to keep it running which dosnt make for a tidy crisp engine.

Posted by: taylorman32

Ive noticed that alot of people dont like vitos piston, but youre the first one to explain why, all everyone else says is there junk.

Posted by: Modifly

yup. The actual pistons they have are infact made by wiseco, they are brilliant before vitos change the tolerances and start to hack away at the dome.

heres afew pictures after a guy who knows blaster engine inside out and is really switched on, even he cant get them to work -

http://i163.photobucket.com/albums/t311/blaster34/100_2363.jpg

http://i163.photobucket.com/albums/t311/blaster34/786820270a5526410108l.jpg

http://i163.photobucket.com/albums/t311/blaster34/100_2386.jpg

those vitos pistons have a tighter squish band with a smaller angle and it's got a much wider and deeper combustion dome which makes them run crap if not spot on (im talking pin point accuracy jetting and fuel mixture and timing ect)

Posted by: taylorman32

looks like the last 3 wiseco pistons ive ran,2 went down from reeds breking, 1 went down for no reason i have found

Posted by: Modifly

well u cant blame the piston for the reeds breaking and if you dont know the reason it cant be put down to the piston.

If you run one correctly it will offer hours and hours of life. but the the vitos i hardly doubt it because those pistons didnt even last 15 mins on a track (each)