what is highest compression you can safely run on 91 octane gas

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Jan 24, 2004 | 09:23 AM

chrisdansin

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Joined: Jul 2003

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From: fishersville, va, usa

what is highest compression you can safely run on 91 octane gas

whats the highest compression you can safely run on 91 octane gas

Jan 24, 2004 | 02:59 PM

Quetzolcotl

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Joined: May 2002

Posts: 638

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From: st. louis, mo, usa

Re: what is highest compression you can safely run on 91 octane gas (chrisdansin)

i've heard anywhere from 11:1 to 13:1 depending on tuning

Jan 24, 2004 | 04:15 PM

hondatim

Joined: Jan 2004

Posts: 385

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From: Kansas City, MO, USA

Re: what is highest compression you can safely run on 91 octane gas (Quetzolcotl)

About 3 months ago I built a very healthy H22a4 for a customer with 12.5:1 ratio. Granted, has Hondata now, but even before customer bought Hondata, engine ran great on 92 octane with stock ECU.

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