Question on ring gap with boost
#2096291
06/22/16 03:57 PM
06/22/16 03:57 PM
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Joined: Jan 2003
Posts: 11,728 Portage,michigan
B3422W5
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My little motor has .018 ring gap on top and second rings. Under 6-8 pounds of blower boost, is pushing the gaps together an issue. Should ring gaps be set wider under such circumstances? I don't want to pull the motor apart.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, low 10.30’s 1/4 1.41 best 60 foot 6.56 at 104.17
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Re: Question on ring gap with boost
[Re: B3422W5]
#2096579
06/23/16 01:39 AM
06/23/16 01:39 AM
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Joined: Feb 2011
Posts: 4,302 Nebraska
72Swinger
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master
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Nebraska
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I set mine at .020 top and second with a 4.065 bore and was told that could handle a 150 shot fine. On a smaller bore .018 might be fine at 8 lbs.
Mopar to the bone!!!
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Re: Question on ring gap with boost
[Re: B3422W5]
#2096638
06/23/16 09:03 AM
06/23/16 09:03 AM
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Joined: Jan 2003
Posts: 11,728 Portage,michigan
B3422W5
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Top ring gapped at .018. 3. 94 bore
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, low 10.30’s 1/4 1.41 best 60 foot 6.56 at 104.17
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Re: Question on ring gap with boost
[Re: TheOtherDodge]
#2096684
06/23/16 11:43 AM
06/23/16 11:43 AM
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Joined: Oct 2003
Posts: 7,506 Az
Crizila
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The boost pressure is not the concern, it is the extra heat a turbo generates. Much like a nitrous application, the top gap should be a little wider than for N/A application. Yep, gotta run them wider for the heat issue. Usually 4-5 thou over NA motor.
Fastest 300
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Re: Question on ring gap with boost
[Re: B3422W5]
#2096691
06/23/16 11:52 AM
06/23/16 11:52 AM
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Joined: Jan 2003
Posts: 11,728 Portage,michigan
B3422W5
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It's for a blower setup, not a turbo, regards my question Torqstorm blower setup, produces 8 pounds boost max
Last edited by B3422W5; 06/23/16 12:00 PM.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, low 10.30’s 1/4 1.41 best 60 foot 6.56 at 104.17
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Re: Question on ring gap with boost
[Re: B3422W5]
#2096700
06/23/16 12:11 PM
06/23/16 12:11 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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It's for a blower setup, not a turbo, regards my question Torqstorm blower setup, produces 8 pounds boost max Don.. if you put a inner cooler it would help in multiple ways.. it would keep the temps down and make more power.. as said... heat is what hurts the rings(butting)..plus try to keep the coolant temp down... its all heat
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Re: Question on ring gap with boost
[Re: B3422W5]
#2097103
06/24/16 12:58 AM
06/24/16 12:58 AM
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Joined: Jan 2003
Posts: 11,728 Portage,michigan
B3422W5
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That setup only makes 8 pounds of boost. It's a nice governor on my wallet. More power, more money, less wife likes the idea. Figure it's enough to dip well into the 10's.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, low 10.30’s 1/4 1.41 best 60 foot 6.56 at 104.17
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Re: Question on ring gap with boost
[Re: B3422W5]
#2097170
06/24/16 02:39 AM
06/24/16 02:39 AM
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Joined: Aug 2003
Posts: 43,303 Bend,OR USA
Cab_Burge
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Bend,OR USA
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The more,longer you drive the car the more the intake manifold inlet temps go up, more heat is not good As far as end gap no way would I think of using that close of a top gap next time on your deal, make it .022+ and don't worry anymore. I would set the second gap between .024 to .030 also Once the ring gaps butt together,especailly at W.O.T., it will cause more problems than you want to have
Last edited by Cab_Burge; 06/24/16 02:40 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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