Piston Rings?
#1735645
01/21/15 02:24 PM
01/21/15 02:24 PM
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Joined: Jun 2008
Posts: 577
Arkansas
Adrielp
OP
mopar
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OP
mopar
Joined: Jun 2008
Posts: 577
Arkansas
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Looking for some piston rings for a 650-700HP 497ci bracket racing engine. Would like to know what options are out there and what you guys would suggest. Thanks
Piston Info:
4.375 Bore, flat top, .990 pin, 1/16, 1/16, 3/16 ring grooves.
Adriel Paradise
Substation Design Engineer III
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Re: Piston Rings?
[Re: Adrielp]
#1735647
01/21/15 04:18 PM
01/21/15 04:18 PM
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Joined: Aug 2003
Posts: 43,141
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,141
Bend,OR USA
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Speed Pro, Federal Mogul, Hastings, JE and a bunch of other choices out there  I don't reccomend or use gapless rings anymore  That was a trick of the week years ago, Total Seal does not recommend using them on a serious drag race motor anymore either  I like to use a standard tension oil ring on any of my motors that won't have a vacume pump, street or strip only   I also set the ring end gap a tiny bit larger than most, .0045 + on the top rings and .0055 + on the second ring per inch of bore size, .030 minumum on the oil ring gaps
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Piston Rings?
[Re: Cab_Burge]
#1735650
01/21/15 06:54 PM
01/21/15 06:54 PM
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Joined: Jul 2004
Posts: 19,317
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,317
State of confusion
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Quote:
Speed Pro, Federal Mogul, Hastings, JE and a bunch of other choices out there I don't reccomend or use gapless rings anymore That was a trick of the week years ago, Total Seal does not recommend using them on a serious drag race motor anymore either I like to use a standard tension oil ring on any of my motors that won't have a vacume pump, street or strip only I also set the ring end gap a tiny bit larger than most, .0045 + on the top rings and .0055 + on the second ring per inch of bore size, .030 minumum on the oil ring gaps
I agree about not goin the gapless route and to free up power on my last freshen, I went w/back cut top n 2nd rings w/the napier second and med tension oil rings. 
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Piston Rings?
[Re: Thumperdart]
#1735652
01/21/15 07:40 PM
01/21/15 07:40 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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cheapest file fits you can find std tension oil ring and go! Gapless rings are for DIRT cars that wear out fast and some alky applications where they keep alky out of the oil at idle--They will leak test better--They will NOT dyno test better in my experience also way more cash and you will get beat at the track by a guy that has three different pistons a flea market converter and drives like a pro cheap house brand rings with proper wall finish work low tension aok for dry sump --usually not with wet sump engines after 20 runs std tension just as good as lows for what we do-- wall finish correct--Square gaps done with care--that is the hot lick
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Re: Piston Rings?
[Re: Cab_Burge]
#1735653
01/21/15 09:04 PM
01/21/15 09:04 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
Speed Pro, Federal Mogul, Hastings, JE and a bunch of other choices out there I don't reccomend or use gapless rings anymore That was a trick of the week years ago, Total Seal does not recommend using them on a serious drag race motor anymore either I like to use a standard tension oil ring on any of my motors that won't have a vacume pump, street or strip only I also set the ring end gap a tiny bit larger than most, .0045 + on the top rings and .0055 + on the second ring per inch of bore size, .030 minumum on the oil ring gaps
hmmmmm a lot of the builders around here swear by the gapless rings, i have always used file fit rings but i let my builder use them whe he freshened my motor recently. seems like the stockers like them also.
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Re: Piston Rings?
[Re: Quicktree]
#1735654
01/21/15 09:10 PM
01/21/15 09:10 PM
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Joined: Nov 2006
Posts: 733
jacksonville,FLORIDA
slammedR/T
super stock
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super stock
Joined: Nov 2006
Posts: 733
jacksonville,FLORIDA
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I had good results from Hellfire rings and now Total seal stainless ap coated gapless rings
2000 Dakota R/T, 408 magnum, 727, Indy heads 1000cfm 4150 carb, 93 octane fuel. motor; 10.258 @ 132.78 200 shot; 9.262 @ 144.69 racemagnum
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Re: Piston Rings?
[Re: slammedR/T]
#1735655
01/21/15 09:28 PM
01/21/15 09:28 PM
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Joined: Oct 2009
Posts: 1,267
North, Alabama
D-50
pro stock
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pro stock
Joined: Oct 2009
Posts: 1,267
North, Alabama
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A few years ago I was using the Speed Pro file fit rings when I freshened the motor I went with gapless rings and saw zero difference. I will stick to the Speed Pro file fit from now on.
1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...
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Re: Piston Rings?
[Re: D-50]
#1735656
01/21/15 10:53 PM
01/21/15 10:53 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Quote:
A few years ago I was using the Speed Pro file fit rings when I freshened the motor I went with gapless rings and saw zero difference. I will stick to the Speed Pro file fit from now on.
He said Zero!
I have built engines week in week out for a LONG time--we dyno lots of engines--we have built some killer circle track stuff over the years at shops I helped at--I have seen for myself and heard many of the best engine builders in the business say that--gapless rings do make beautiful leak down test--BUT..engines don't run like ring test--I was at a shop that did a back to back test--yep! Not long after getting a new dyno they ran it night and day Proving things and DISPROVING much conventional wisdom--
I will stand on this: In what we as Mopar guys do--street/ hot street/ bracket race it is silly to spend over $200 on rings that in our application are NO better than some house brand ( PBM, Liberty, Engine Works etc) rings $70
You guys are fooling yourselves and spending extra cash because you heard or read something--Every magazine article I have ever had anything to do helping out the writers -- was done for reading and entertainment NOT for facts. Do you believe Street Outlaws is real?
Save your cash --Gapless rings are handy when you run and eat dirt--they keep making cylinder pressure a little better after it has been eating dirt and worn itself out--run them in an alky injected where at idle it is usually very rich and can get past rings to screw up your expensive oil but there is no good reason to run them in a plain old bracket or street Mopar--
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Re: Piston Rings?
[Re: ]
#1735658
01/22/15 12:46 AM
01/22/15 12:46 AM
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Joined: Jul 2012
Posts: 429
Washington
skrews
mopar
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mopar
Joined: Jul 2012
Posts: 429
Washington
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Quote:
Quote:
A few years ago I was using the Speed Pro file fit rings when I freshened the motor I went with gapless rings and saw zero difference. I will stick to the Speed Pro file fit from now on.
He said Zero!
I have built engines week in week out for a LONG time--we dyno lots of engines--we have built some killer circle track stuff over the years at shops I helped at--I have seen for myself and heard many of the best engine builders in the business say that--gapless rings do make beautiful leak down test--BUT..engines don't run like ring test--I was at a shop that did a back to back test--yep! Not long after getting a new dyno they ran it night and day Proving things and DISPROVING much conventional wisdom--
I will stand on this: In what we as Mopar guys do--street/ hot street/ bracket race it is silly to spend over $200 on rings that in our application are NO better than some house brand ( PBM, Liberty, Engine Works etc) rings $70
You guys are fooling yourselves and spending extra cash because you heard or read something--Every magazine article I have ever had anything to do helping out the writers -- was done for reading and entertainment NOT for facts. Do you believe Street Outlaws is real?
Save your cash --Gapless rings are handy when you run and eat dirt--they keep making cylinder pressure a little better after it has been eating dirt and worn itself out--run them in an alky injected where at idle it is usually very rich and can get past rings to screw up your expensive oil but there is no good reason to run them in a plain old bracket or street Mopar--
THIS ^^^
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