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31Tudor · 04-12-2021, 07:33 AM

I have run 8,000 miles on an engine with babbitt bearings, stock oil system, with a 7:1 Thomas fin head. No issues, no knocks, no oil drips.

04-12-2021, 07:33 AM	#9
31Tudor Senior Member Join Date: May 2010 Location: North Carolina Posts: 611	Re: Highest Reliable Compression Ratio I have run 8,000 miles on an engine with babbitt bearings, stock oil system, with a 7:1 Thomas fin head. No issues, no knocks, no oil drips.