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Join Date: Nov 2012
Location: albuquerque new mexico
Posts: 273
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Upside

New rebuild! it appears I installed the Pistons upside down. Should I just rotate them or pull them out of the cylinders and start over with the proper ring orientation.

Old 09-23-2018, 05:58 AM
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Join Date: Oct 2008
Location: Nash County, NC.
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Ring orientation doesn’t matter as they will move to their desired location almost immediately.
Bruce
Old 09-23-2018, 09:46 AM
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So I'm going to remove the clips and piston pins and rotate piston in the cylinder 180 and reinstall pin and clip does that sound right ?
Old 09-24-2018, 11:21 AM
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IMHO Ring orientation does matter; on the flat 6 motor you never want ring gaps pointed straight downward as that contributes to even more oil pooling in the cylinders when left for a long time, and even more smoke than usual on startup.
Old 09-24-2018, 11:30 AM
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If your engine uses offset piston pins, you really need to R&I them correctly.
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Steve Weiner
Rennsport Systems
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Old 09-24-2018, 12:40 PM
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1977 2.7 cis engine with euro Pistons I don't think they are offset. If I pull the piston out will I damage the rings or is there a trick involved? I hate to buy new rings they were hard to fit and required a different size for the center gap!

Old 09-24-2018, 03:52 PM
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