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Re: ZZ572 89 octaine?

You could probably open the combustion chambers up some and knock several points off the compression ratio. I've run a 555 with 9.3:1 and aluminum heads on 89 octane. It actually seemed to make more power than with 93. Probably wouldn't loose a measurable amount of HP.

Re: ZZ572 89 octaine?

Quote:

Originally Posted by bobl

Thanks BOBL, why didn't I think of that, I guess I got alot to learn . :D
You guys are great .I have been getting way to stressed out getting an engine sorted out ,There is hope for this factory stroker yet .