Quote:
Originally Posted by Exage
Ahhhh that was for the turbocharged engines... I missed that.
(9.4cm/2)squared(X)pi(X)1.089cm= 75.57cc reduction at TDC to reach 10.5:1CR with 72mm stroke. The piston is sitting quite low after the de-stroke with the 129.3mm rod... It would require some serious altercation to the piston crown or wrist pin placement.
I think they might run into cooling and structural problems taking that much material off the top of a stock FB25 block, among other things. No good solutions I can think of.
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If the block isn't as long/tall, could it be a bit stiffer? Semi-closed or closed deck could help?
As for cooling... oil squirters (and front mount oil cooler), forged pistons (more heat/detonation resistance than cooling but you get the idea) and thermal coatings. Maybe an efficient electric water pump.
