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oversized piston rings


yubh8tn
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1384/2000


Galant VR-4 org Post #: 1250206 posted 12/16/20 10:05 PM     Remind Me!  Send Private Message   Edit Post      
Hello guys, it took me a while, but I finally figured out the issue with my old rings. Block was bored out by .50mm sometime in its existence, hence the non-fitting factory rings.

The issue now is finding oversized piston rings. I can find ring/piston combos and rings for 2g's but not for our engines. Does anybody know where to find correct thickness 0.50mm oversized rings?



Belize Green 1384/2000
1998 Integra

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slugsgomoo
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Galant VR-4 org Post #: 1250209 posted 12/17/20 11:17 AM     Remind Me!  Send Private Message   Edit Post      
I've run 2g pistons in a 6 bolt in the past, why can't you use a set from them?



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iceman69510 Galant VR4.org Moderator
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Galant VR-4 org Post #: 1250213 posted 12/17/20 01:22 PM     Remind Me!  Send Private Message   Edit Post      
It notes down below in the ad that you can request oversize.

Doesn't specifically specify NPR rings, but this seller, Domestic Gaskets, does have NPR in other auctions. You could ask them.

ring set

Andrew, I think the ring heights are different between 1g and 2g pistons (thinner low friction rings in the 2g). Not 100% sure that is correct, but that is what I recall.



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slugsgomoo
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Galant VR-4 org Post #: 1250214 posted 12/17/20 01:30 PM     Remind Me!  Send Private Message   Edit Post      
It's possible... to be honest I haven't seen an OEM piston in almost 15 years so...



-andrew
{witty signature}
#461 Kensington Grey - 2.4L/T67/etc
2015 Triumph Tiger 800 XCx
2014 Ford Focus ST

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yubh8tn
Member
1384/2000


Galant VR-4 org Post #: 1250216 posted 12/17/20 11:20 PM     Remind Me!  Send Private Message   Edit Post      
Thank you guys for the replies. I contacted those Domestic Gaskets guys a few days ago, before making this post actually, but their only oversized ring set for our car was made by Evergreen and they wanted $100 for them. I don't think Evergreen is a good brand but correct me if I'm wrong.

Does the ring thickness matter? What are the correct ring thicknesses for our engine? On my last post somebody said 1.5mm, 1.5mm, 3.0mm, but I can only find 1.2mm, 1.5mm, 3.00mm on Ebay. Will the difference really matter (if any at all)?



Belize Green 1384/2000
1998 Integra

Posts: 128 | From: coeur d alene, idaho | Member Since: 08/21/19 | IP: (66.222.63.21) | Report this post to a Moderator

iceman69510 Galant VR4.org Moderator
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Galant VR-4 org Post #: 1250218 posted 12/18/20 01:06 PM     Remind Me!  Send Private Message   Edit Post      
Yes, it matters alot. If the rings don't fit the grooves, they will not fit (if too large) or will not function as required and likely break (if too small).

Those numbers seem right, as I recall the 1g top rings being thicker.

I don't know anything about evergreen. I'll look again when I have a chance.



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yubh8tn
Member
1384/2000


Galant VR-4 org Post #: 1250226 posted 12/20/20 08:34 AM     Remind Me!  Send Private Message   Edit Post   
My first piston ring groove looks a bit smaller than my second so I went ahead and ordered some NPR 1.2mm, 1.5mm, 3.0mm rings as that's the brand I want to go with. I'm gonna figure out a way to measure the grooves before they arrive just in case. Thank you guys for helping me figure this out. Almost there!



Belize Green 1384/2000
1998 Integra


Edited by yubh8tn (12/20/20 08:35 AM)

Posts: 128 | From: coeur d alene, idaho | Member Since: 08/21/19 | IP: (66.222.63.21) | Report this post to a Moderator


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