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25 Johnson missing
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<blockquote data-quote="Pappy" data-source="post: 334357" data-attributes="member: 3278"><p>The 91 octane burns substantially faster and is not needed. </p><p>The engine may actually produce more power on 89. </p><p>Yes, even if you cut the head resist the urge to go back to 91. </p><p>Have run engines with heads cut between .100 and .125 on 89 octane (you read right, that's right at 1/8")</p></blockquote><p></p>
[QUOTE="Pappy, post: 334357, member: 3278"] The 91 octane burns substantially faster and is not needed. The engine may actually produce more power on 89. Yes, even if you cut the head resist the urge to go back to 91. Have run engines with heads cut between .100 and .125 on 89 octane (you read right, that's right at 1/8") [/QUOTE]
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