AFR or Canfield Heads
11-05-2004 | 12:28 PM
#11
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Joined: Nov 2000
Posts: 709
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From: Grand Rapids Mi. U.S.
Re: AFR or Canfield Heads
Originally Posted by john.sblendorio
Thanks for the input Jim. I believe the rev limiter is 5,250 so that will have to be increased for sure. How about max compression ratio on pump gas?
11-07-2004 | 09:58 PM
#12
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Joined: Oct 2000
Posts: 4,541
Likes: 107
From: Western Michigan
Re: AFR or Canfield Heads
Gas should be the cheapest part of boating---especially when you just laid down some heavy duty SMACK for a new pair of engines and don't want to chance detonating them. I try to give myself a little cusion by using a little higher octane that what I really need.
Last edited by KAAMA; 11-07-2004 at 10:02 PM.
11-07-2004 | 10:21 PM
#13
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Joined: Jul 2004
Posts: 8,908
Likes: 9
From: Long Island,New York
Re: AFR or Canfield Heads
Aluminum heads:92 octane-9.6to1 87octane-9to1
Steel heads: 92 octane-9.4to1 87octane-8.8to1
This is a good conservative guideline for no detonation even if you get a batch of questionable gas.
Steel heads: 92 octane-9.4to1 87octane-8.8to1
This is a good conservative guideline for no detonation even if you get a batch of questionable gas.
