Quote:
Originally Posted by 350matt
sorry but 20 psi is quite a lot of boost E85 or not and there's not a manufacturer out there running CR over 11:1 on a boosted engine
drop the ratio to 10.5:1 and you'll have far more headroom against detonation and not have to swing the cams out to lower the dynamic ratio
look at the rest of the industry and consider that the hundreds of engineers and talent applied to those engines and ask yourself why none of the comtemparies are running high ratio and high boost
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While true, OEM's also do not design for all out power. They have other considerations like emissions and long term reliability.
I'd stick with 12.5 as well if your going to run e85. Better response off boost and quicker spool.