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SVTPerformance's Chain of Restaurants
The Distillery
Searched and found nothing....plugs for 21psi+ and E85
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<blockquote data-quote="RFH" data-source="post: 10510973" data-attributes="member: 35112"><p>It has a high octane number which means its resistant to knock, or auto-ignition. But that does not mean its resistant to pre-ignition, aka surface ignition. I found that out the hard way on our schools E85 snowmobile. It had a turbo-charged E85 4 stroke engine and we were only running about 10 psi (with ~9:0 CR) and blew it up. No knock, but would pre-ignite (and got worse as the engine got warm) due to the stock spark plugs being too hot of a heat range . Replaced them with 2 heat range colder, same cal and all was good. Ive seen this a few times.</p></blockquote><p></p>
[QUOTE="RFH, post: 10510973, member: 35112"] It has a high octane number which means its resistant to knock, or auto-ignition. But that does not mean its resistant to pre-ignition, aka surface ignition. I found that out the hard way on our schools E85 snowmobile. It had a turbo-charged E85 4 stroke engine and we were only running about 10 psi (with ~9:0 CR) and blew it up. No knock, but would pre-ignite (and got worse as the engine got warm) due to the stock spark plugs being too hot of a heat range . Replaced them with 2 heat range colder, same cal and all was good. Ive seen this a few times. [/QUOTE]
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SVTPerformance's Chain of Restaurants
The Distillery
Searched and found nothing....plugs for 21psi+ and E85
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