Ring Gap
#23757
04/22/06 06:28 AM
04/22/06 06:28 AM
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Anonymous
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I am starting to put my stroker to gether and I was wondering what you guys set your ring gap at.The instructions say .0003 to .0004 for every inch of bore. What do you guys think?
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Re: Ring Gap
#23758
04/22/06 06:35 AM
04/22/06 06:35 AM
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I think I would need to know the piston brand, the ring/bore size, the thickness and style of the rings, the application it's for (street, street/strip, blown, race only etc.)and whether or not any power adders will be used. for your average street combo .004 per inch is normal for the top ring and .0045 per inch for the 2nd ring.
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Re: Ring Gap
#23761
04/22/06 01:50 PM
04/22/06 01:50 PM
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OK guys I should have put more info so here goes. 496 stroker Ross Dome pistons around 12.8 to 1 comp. all carb NO SILLY GAS around 610 hp + - a few all race childs and albert rings and I think 3/16 thick. Its 30 over 440. Thanks in advance. Please be quick I need to get this done and to the track at least once and then so I can make it to the Cinn. CC event race
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Re: Ring Gap
[Re: MoparforLife]
#23762
04/22/06 01:53 PM
04/22/06 01:53 PM
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Yes you are right its .003-.004 Im not a machinst and Im old and my finger shook to many times.
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Re: Ring Gap
#23763
04/22/06 02:03 PM
04/22/06 02:03 PM
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Last edited by DonHines; 04/22/06 02:05 PM.
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Re: Ring Gap
#23764
04/22/06 02:04 PM
04/22/06 02:04 PM
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Joined: Mar 2005
Posts: 3,021 NY
B1duster
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Quote:
Yes you are right its .003-.004 Im not a machinst and Im old and my finger shook to many times.
------ Maybe you better get a young whipper snapper to put your motor together Just Kidding
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Re: Ring Gap
[Re: B1duster]
#23765
04/22/06 02:11 PM
04/22/06 02:11 PM
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HAHA I do have one He went to school for high performce engines I am just checking to get some advice from the brains on this site suggest. There are a lot of very smart people on here and the best part the info is all FREE
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Re: Ring Gap
#23766
04/22/06 02:23 PM
04/22/06 02:23 PM
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use .0045 per inch on the top ring and .005 per inch on the second. that would be roughly .020 top and .022 second.
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Re: Ring Gap
[Re: Brian Hafliger]
#23773
04/22/06 11:54 PM
04/22/06 11:54 PM
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Ok well it seems .020 top and .022 second is the winner. But why does the manufactor say .003 and.004 per inch of bore.The guy I race with says keep them tight and you guys seem to run them a little looser ? Can some one please explane this to an old fart?
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Re: Ring Gap
[Re: Brian Hafliger]
#23774
04/23/06 01:40 AM
04/23/06 01:40 AM
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Joined: Jan 2005
Posts: 1,260 Las Vegas NV
moparmanjames
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Quote:
Pressure gets trapped between the top and second ring and at higher rpm's this can cause the top ring to unseat if the pressure can't escape. So by running more clearance on the second ring it allows the pressure to escape.
Thanks, that makes sense, so when running Total Seal gapless second rings, just use a large top ring gap? Also, while we're discussing this phenomenon, when builders drill the top of the piston for ring seal, wouldn't that promote the same type of seating issues due to the higher pressure between the rings and a lower pressure behind the top ring during, say, the early portion of the compression stroke?
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Re: Ring Gap
#23775
04/23/06 01:42 AM
04/23/06 01:42 AM
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Joined: Jan 2003
Posts: 5,485 SoCal
Brian Hafliger
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Quote:
Ok well it seems .020 top and .022 second is the winner. But why does the manufactor say .003 and.004 per inch of bore.The guy I race with says keep them tight and you guys seem to run them a little looser ? Can some one please explane this to an old fart?
All I can do is give advice on what works...
Brian
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Re: Ring Gap
[Re: Brian Hafliger]
#23776
04/23/06 07:56 AM
04/23/06 07:56 AM
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Enough said. Thanks again.
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