Dayz Posted April 10, 2008 Share Posted April 10, 2008 Guys, I have search and couldn't find the thread that was talking about all the different type and material of piston rings and for which application. I thought that BRAAP posted this info a while ago... I am building a stock engine, L24 E31 head-P30 Block and I was wondering what type of ring to use, Cast, poly, chrome... I am lost guys, Thanks Dayz Quote Link to comment Share on other sites More sharing options...
z-ya Posted April 10, 2008 Share Posted April 10, 2008 Use stock cast rings. If you can get them from Nissan, great, if not Deves makes high quality cast rings. I have a set of Badger L24 pistons if you are interested. Quote Link to comment Share on other sites More sharing options...
zcarnut Posted April 10, 2008 Share Posted April 10, 2008 I have re-built about 15 L-series over the last 30 years and I have had better results using aftermarket rings with a moly (short for molybdenum) coating. Sealed Power Moly rings are my preference (they are even cheaper than the Nissan rings), but there are other quality brands out there. The Nissan cast stock rings have a chrome coated compression (top) ring and unless the re-honing is done correctly they can take 10K miles to seal. Piston ring technology has improved substantially over the last 15 years. Any stock Nissan ring has probably been sitting a on a shelf for longer than that. Do a Goggle on the benefits of moly coatings (and also steel vs. cast rings). Lots of good info out there. Quote Link to comment Share on other sites More sharing options...
Dayz Posted September 10, 2008 Author Share Posted September 10, 2008 Thanks guys, Moly or cast ring would be find I guess. This one is just a stock engine, nothing very fancy. Dayz Quote Link to comment Share on other sites More sharing options...
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