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Checking the gap on the lq4 I am throwing together. Top ring shows .035 and second ring shows .033. Pretty consistent with all cylinders. They seem large to me. I am going to be running an LSA with around 12 pounds of boost. I usually see people posting .026-.030
Mine are .033 in my lq4, and has been running over a year. I do not have any issues with oil consumption or smoking ect. I understand the concern, but as said, send it.
Mine are .033 in my lq4, and has been running over a year. I do not have any issues with oil consumption or smoking ect. I understand the concern, but as said, send it.
My story is the same except mines been a bit over 2 years. It's fine send it.
Thanks for the replies everyone. My buddy had a new set of Mahle rings and I decided to just chek them out. With my lq4 the second ring has a wider width on it then the top ring. The mahle rings are both the exact same size, no width difference. Does that matter? I am pretty sure I am just going to throw the stock rings back on and send it!
Yes the gen 4 rings are different, but I am using all gen 3 stuff. The genIII engines used a 1.5/1.5/3.0mm, which are what the replacement rings are. Here is a photo of the difference. Top rings are the same size, where the stock second ring is wider than the replacement ones.
Best quote I’ve ever heard about ring gaps.... if your ring gaps are too big you are the only one that will know, if your ring gaps are too tight everyone will know
I ran an l33 that when I pulled it apart to check gaps, they were .045.... no smoke, no oil consumption, just power 🤣
Yep, in the grand scheme of things....those gaps are still insignificant. It will not cause blowby, it will not cause oil consumption etc. If only people would wake up to it.
If it is an all out race build aiming for that last little bit of power, then you could be concerned about keeping them a bit tighter. In the real world for the vast majority...it's no big deal.
i got a 225000 mile 5.3 lm7 im not even gonna check ring gap . it didnt smoke or knock when pulled . so im gonna send it with a 7875 turbo . only gonna be making 10-12 lbs of boost tho
Although it'd be a lot of work, it'd be a nice one for Engine Masters. Start with some nice tight gaps...and then pull it apart and do a few pulls opening up the gaps say 5 to 10 thou at a time and see what happens.
Although it'd be a lot of work, it'd be a nice one for Engine Masters. Start with some nice tight gaps...and then pull it apart and do a few pulls opening up the gaps say 5 to 10 thou at a time and see what happens.
cool idea, I’d like to see crank case pressure measured. My nitrous motor was hemorrhaging oil from every orafice until I put a vacuum pump on it. I suspect this was in part due to the ring gap.
04-02-2019, 11:40 AM
LQ4 ring gap too large? 
