 How much C/R can one run on 91 octane pump gas?, Type 4 specific. |
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| Aaron Cox |
 Apr 22 2006, 09:37 PM
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#41
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Professional Lawn Dart  Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California  |
Strong possibility that the heads are coming off my 2L beast. while they were off, i figure i will bump up the CR to sneak some HP out.
MY motor has headgaskets and euro 94mm p/c (flat top mahles) i think it is a tad over 8:1 currently. been 3 years since i built it - runs great. so my thinking is, remove the base shims and headgaskets - I will CC the heads while they are out (cant recall the data when we built it 3 years ago) How little deckheight can i run? what is max CR i can run on 91 premium unleaded? If it matters, have mallory dizzy (can back off total advance if it detonates etc..) mallory CDI, and cool b7es NGK plugs. AA |
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Posts in this topic
Aaron Cox How much C/R can one run on 91 octane pump gas? Apr 22 2006, 09:37 PM
sean_v8_914 here is a link to a compression calculator.
http... Apr 22 2006, 10:09 PM
Aaron Cox   |
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