Originally Posted by
BenFenner If things are to be believed around here, 90mm for N/A is safe, and 92mm is sometimes done without issues. ⌐_⌐
this is true.
ive seen it, a 90mm 660whp vet, something failed but it wasnt the sleeve, the block was still good and may be being used for all i know.
ive seen it, 90mm 280whp na ve, ran some wicked times, was taken apart to port the head, still sits on a engine stand to this day.
ive seen it, my 92mm block, something failed but it wasnt the sleeves them selves.
ive seen it, jaimes 92mm block, fazils 92mm block and rocco's 92mm block.
ive read about it, corys 92mm block has held together for many low 11 passes.
everythings doable to a point. apparently we all have better luck then others.
as far as 88mm goes, as good as it sounds, we dont have a head gasket that seals it correctly. by correctly i mean we have 87 or a 90, niether of those are 88mm. we dont have a 87mm h/g that will seal a 88mm bore. with the 90mm for those who have seen them doesnt leave much to seal and i personally wouldnt want to run a head gasket that can seal a 92mm bore on a 88mm bore. as far as machining out a 87mm gasket to 88mm well that depends on how much you trust your machinest. as we all know its always hit or miss with machinests and shops etc. its always best to do it your self or not to do it at all. those who havent learned that, will in due time.
a 87mm ve with a high compression pistons such a 12:5:1 or 13:1 and lightned crank some nice cams and some headwork is a 230 whp set up on a dynodynamics all day. add in kojimas long rod design and youll hold power alot longer and slow down piston speeds. very important to road racing, drag racing and all togther longevity.
end rant.
stratton.