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Exage · 05-03-2011, 01:15 AM

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.

05-03-2011, 01:15 AM	#115
Exage GL 86! Join Date: Mar 2011 Drives: Maybe FR-S... maybe not Location: NA Posts: 356 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	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.