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Michael2007Mini Michael2007Mini is offline
2007 Mini Cooper
 
Join Date: Feb 2016
Location: Georgia
Posts: 13
Piston Ring installation help

I'm in the process of replacing the rings in my Gen2 N12 R56 2007 mini cooper (non-turbo). Rings P# 11-25-566-479-BOE

My problem is that I'm not able to get the oil ring (or oil scraper ring) to compress down enough for the piston to drop into the cylinder. I've had replacement rings sent because they appear to be oversized at 3 1/8th inch versus the 3 inch diameter of the cylinder.
When I put the oil ring into the cylinder, just like you do the regular ring to check the gap, it will not fit "level" or it has to sit offset within the cylinder or literally overlapped.

Is the problem with me or the oil ring? I'm using the ratcheting tool with the 3 inch sized compression attachment.

Any help is greatly appreciated as Pelican has been most gracious with sending replacement rings but I feel this is an issue with the factory sending the wrong oil ring with the package for my N12.

Thank you for your time!
Mike

Old 08-18-2017, 04:00 PM
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