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Thread: Ring gap question
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02-19-2014, 11:43 AM #1
Ring gap question
Stock bore motor. Machine shop said it just needed rehoned. Head and cam car. Not the one in sig. It will be N/A. I just checked ring gaps with new rings. Here is what i had for first and second.
Top - .022 across the board
Bottom- .020 across the board
Should i just get file fit rings or can i do something with these? Also i always thought the second one had the larger gap?Jim
94 Z28, M6-RPM Stage 3,Spec 3,Forged 383,4-bolt,12.8,LE2,Eagle 6"H beam,306 for now,42lb injectors,58 BBK, Pacesetter,BMR SFC,LCA,Panhard,k-member,spohnTA and loop
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02-19-2014, 02:02 PM #2The FABRICATOR!
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The thing to do seems to have went from the second ring being larger to the top ring bring larger depending on application and ring material. The best thing to do is go by what the ring manufacturer suggests. Also it is very important to know what grit hone they used to finish. The newer plasma moly rings generally require a much finer finish.
Chris
1985 Monte Carlo SS
Mods: 9:1 383 LT1, Ported Trick Flow heads, D1SC Procharger, 4L80E, 3.50 9"
Check out the M122 MCSS build thread here!
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02-19-2014, 02:16 PM #3Xtreme Member
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This ^ but here's stock.
Top: .010-.016
2nd: .018-.026
Oil:.010-.0302012 Sierra - 5.3, Summit "Stage 1" Truck Cam
1994 Jimmy - LS? LT? 4wd? AWD? Time? Money?
1994 Formula - 5.3, Terminator X, Billet VS7875, "Best Cam", T56, QP 9"
Formula Build Thread
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02-19-2014, 04:34 PM #4
I know what the stock numbers are. Lets put it this way. Some guys are running their gaps a little large for nitros and some just to be on the safe side. Does it hurt any thing to run them a little large N/A? If not what gaps do you recommend? I will check and see what the manufacturer suggest to.
*I forgot to add they are Mahle moly rings.*Last edited by bowtiedad_z28; 02-19-2014 at 05:09 PM.
Jim
94 Z28, M6-RPM Stage 3,Spec 3,Forged 383,4-bolt,12.8,LE2,Eagle 6"H beam,306 for now,42lb injectors,58 BBK, Pacesetter,BMR SFC,LCA,Panhard,k-member,spohnTA and loop
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02-19-2014, 05:12 PM #5
I just e-mail Mahle Clevete to see what they suggest. They dont seem to have a phone # listed online to call.
Jim
94 Z28, M6-RPM Stage 3,Spec 3,Forged 383,4-bolt,12.8,LE2,Eagle 6"H beam,306 for now,42lb injectors,58 BBK, Pacesetter,BMR SFC,LCA,Panhard,k-member,spohnTA and loop
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02-19-2014, 10:34 PM #6The FABRICATOR!
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Don't forget to ask about the required finish prep on the cylinder walls. Its very important
Chris
1985 Monte Carlo SS
Mods: 9:1 383 LT1, Ported Trick Flow heads, D1SC Procharger, 4L80E, 3.50 9"
Check out the M122 MCSS build thread here!
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The Following User Says Thank You to firebird_1995 For This Post:
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02-19-2014, 10:44 PM #7
Gaps are fine for an na motor just make sure the machine shop gave you the correct finish for the rings if you have the wrong finish the rings won't seat
forged 383,9.6:1,280xfi, trickflow heads,edlebrock lt4 intake,moser 12 bolt w/373
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02-19-2014, 11:06 PM #8LTXTech Sponsor
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I set up a 383 in an old school N/A small block with .022 gap on both the top and bottom rings and it runs great.
1998 Bright Green Metallic Trans Am LS1/M6, Cam/Intake/Exhaust, Full Suspension, 3.42 gears, 30 MPG highway and 397 RWHP on untouched heads, 12.47@115 mph.... needs gears!
2011 Victory Red Silverado 1500 Z71 LC9 5.3/A6, Z71 appearance package, factory 18's, e85 warrior
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02-20-2014, 12:58 PM #9
Mahle answered all my questions. It is good to go.
Jim
94 Z28, M6-RPM Stage 3,Spec 3,Forged 383,4-bolt,12.8,LE2,Eagle 6"H beam,306 for now,42lb injectors,58 BBK, Pacesetter,BMR SFC,LCA,Panhard,k-member,spohnTA and loop
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02-20-2014, 01:59 PM #10The FABRICATOR!
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What did they say?
Chris
1985 Monte Carlo SS
Mods: 9:1 383 LT1, Ported Trick Flow heads, D1SC Procharger, 4L80E, 3.50 9"
Check out the M122 MCSS build thread here!
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