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Old 05-11-2004, 01:37 PM
Grumpy
 
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Ring gaps

Hey, just wanted to hear what yall's opinions were.

I'm reinstalling the pistons on this 305 and have the top and bottom rings set at .020

The oil control rings are set at .030 from the factory.

Usual setup for street use, anybody have the gaps set differently?

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Old 05-11-2004, 01:49 PM
King of my Man-cave.
 
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Your ring end gaps are fine. Now, about the gap between your front teeth...........


LOL, just kidding!

tom
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Old 05-11-2004, 01:51 PM
Grumpy
 
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Hey! You know how much it would cost to fix that gap between my teeth. Now if insurance covered it that would be different lol.
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Old 05-11-2004, 02:50 PM
King of my Man-cave.
 
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Yep, I know, both of my sisters had braces. I fixed my teeth myself when I dented a car's deck lid after a short flight over my 10 speed's handlebars. Crunch!!!

tom
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Old 05-11-2004, 03:07 PM
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Just to comment on ring gap...

One of the common things to do now, is actually gap the second ring larger. This helps aid in oil control and also keeps pressure out from between the rings. When pressure builds up it can lift the top ring off its land. I build all my motors now with more gap on the second ring and have very good luck with it.
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Old 05-11-2004, 04:01 PM
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i thought that was a bit much. my hastings ring set said 4 thous per inch of bore and that was bigger than the factory manual said. oh well. i was hoping i would have gotten the same result with my main bearing clearances but i DIDN'T. whaa. at least it's better to be bigger than to small with rings. i gapped mine btwn 16 and 20 myself
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Old 05-11-2004, 08:09 PM
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Quote:
Originally posted by brainsboy
Just to comment on ring gap...

One of the common things to do now, is actually gap the second ring larger. This helps aid in oil control and also keeps pressure out from between the rings. When pressure builds up it can lift the top ring off its land. I build all my motors now with more gap on the second ring and have very good luck with it.

yep, me too, 20 for the top ring is what I set mine at...

if you use KB pistons this is very important....

2wld4u
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Old 05-12-2004, 05:22 AM
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Quote:
Originally posted by brainsboy
Just to comment on ring gap...

One of the common things to do now, is actually gap the second ring larger. This helps aid in oil control and also keeps pressure out from between the rings. When pressure builds up it can lift the top ring off its land. I build all my motors now with more gap on the second ring and have very good luck with it.
Huh... interesting
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Old 05-12-2004, 01:04 PM
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If they are new pistons follow the mfr. reccomendations. Some pistons run hotter at the top than they used too in an effort to promote efficiency. If the gaps are tighter than piston mfr. reccomends they could but their ends together and break a ring land on the piston.
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