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Old 01-22-2022, 02:10 PM   #37
Shoebox
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Join Date: Jan 2014
Location: Holmen,Wisconsin
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Default Re: Thoughts/Opinions on Piston Rings

Quote:
Originally Posted by flatjack9 View Post
Manifold vacuum for sure. I worked as an engineer in the auto industry in the 60's and 70's and ported spark was emissions related.

Well, that's good enough for me, manifold vacuum it is.
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