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09-08-2012, 01:10 AM
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#4 |
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Registered User
Join Date: Nov 2007
Location: Bay Area, Ca
Posts: 2,841
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Re: Compression Ratio
My 418 is 12.9-1 and I have run it on 91 octane. Made 511rwhp through a loose converter and glide. That was with very conservative timing, 20* total at WOT. Stood on it quite a bit on the dyno and showed 0* KR. Have also driven it around a few hundred miles with 0 kr. Keep in mind, I have a cam with a decent amount of duration, and my dynamic compression comes in at 8.7-1.
On E48 it made 546rwhp with 26* total timing. Didn't make anymore with 28* or 30*.. FYI, my 60lb injector on E48 are mid/high 60% duty cycle at 58psi fuel pressure. Posted via Mobile Device
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------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49 |
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