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JWL · 03-04-2021, 05:58 PM

Again it is time for some real facts--it depends on the rings you are using. If you are using the dual scraper oil ring with expander, omitting the 4th ring is completely acceptable or even preferred. If you are using the original type, one piece oil rings it is better to install all 4 of the rings.

03-04-2021, 05:58 PM	#9
JWL Member Emeritus Join Date: May 2010 Location: Fitzgerald, Georgia Posts: 2,204	Re: Flat head pistons Again it is time for some real facts--it depends on the rings you are using. If you are using the dual scraper oil ring with expander, omitting the 4th ring is completely acceptable or even preferred. If you are using the original type, one piece oil rings it is better to install all 4 of the rings.