LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Ring Gap with 150 shot

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Old 09-25-2014, 02:46 PM
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Exclamation Ring Gap with 150 shot

Heres my issue, I asked the machine shop to file fit my rings to the end gap of .020 and .022 according to Weiscos gap chart which is "street-moderate turbo/nitrous"
http://www.wiseco.com/PDFs/Manuals/RingEndGap.pdf

Well instead they must of had some miscommunication and gapped it for the "nitrous race only" which is a gap of .028 and .030. I find this rather big for a mostly street driven car that will be spraying no more than a 200 shot. Any advice would be awesome.
Old 09-25-2014, 03:06 PM
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That gap will be fine. I am running .028 and .030 with wiseco pistons, the larger gap is the second ring to prevent flutter. It has worked well all season running a 150 shot. I am currently upgrading the fuel system and will spray 200 until November then this winter I am boosting the car with a billet 80mm.
Old 09-25-2014, 03:24 PM
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Originally Posted by high impact
That gap will be fine. I am running .028 and .030 with wiseco pistons, the larger gap is the second ring to prevent flutter. It has worked well all season running a 150 shot. I am currently upgrading the fuel system and will spray 200 until November then this winter I am boosting the car with a billet 80mm.
That makes me feel better, so to much blow by isn't an issue? My concern was that it wasn't a good setup for a car that will see mostly street use.
I'm excited to see your future set up sounds nasty
Old 09-25-2014, 03:48 PM
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My car is a street car and I have no blow by and use no oil. A solid PCV system is critical with these LS engines though. You will have PCV issues long before ring gap issues as long as the cylinder wall hone and ring install is correct. What does your machinist say about it?

https://ls1tech.com/forums/nitrous-o...ous-build.html
Old 09-25-2014, 06:00 PM
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That's good to hear. But I actually have an lt1, sorry I didn't clarify in the post.
Old 09-25-2014, 08:15 PM
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Dang I didn't realize what category this was. lol Should still be good.
Old 09-25-2014, 09:35 PM
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No problem. Rings gap is gonna all be similar. Thanks for the help I'm gonna run it



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