Dr3w

hey my machinist just called me and told me my vitaras arent actually 75mm ?? is this possible, he says the block is fine and its exactly 75mm, but not my pistons, im gonna have a .008 piston- wall clearance if i still go ahead with it , now is it possile hes just ether trying to screw me into buying other pistons at his shop ? and if not if i let my car warm up and the pistons expand before driving it will i have blowby with that much clearance ? this blows lol...

Bone1

old news.......

did you look up the specs on STOCK Vitaras?

Guess not.

Dr3w

no .. lol wtf reasons would i look up stock vitara specs, when i buy pistons that are written 75mm on the box i expect 75mm pistons, not 74.8 -+

so what about my massive piston-wall clearance if i let her warm up till she stops knocking etc, any chances i get blow by or worst.. ?

tealcherokee

thats why in america, we measure pistons in thousand's of an inch.

my stock pistons are written and ordered as 3.875" (98mm).....

but do you know what 98mm is..... 3.858, 0.017" difference

koreanwilcox

This is pretty common knowledge. Most people just use them anyways and deal with the slop in the clearance.

If you are that worried about it, you could go with some 76mm vitaras and bore the cylinders out. A budget setup is a budget setup though, if you want tighter clearances you could always go with some real forged pistons, they come in all different sizes

Guy-Fast

vitara's have slap for a reason. If you want to do it right sell them buy a set of forged pistons

sleeper91

I find this topic funny since there are lots of guys running vitaras all the way up to 400hp. You should go over to honda-tech an take a look around there about those pistons

J-MAN

so what does everybody do then? just deal with it?