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View Poll Results: .031" Dykes or .043" Rings ?
.031" Dykes 41 33.88%
.043" .155" radial moly ring with lateral gas ports 39 32.23%
.043" .134" radial moly ring with lateral gas ports 31 25.62%
Other, Make suggestion 10 8.26%
Voters: 121. You may not vote on this poll

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Old 06-17-2009, 07:44 AM   #21
RJ Sledge
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Default Re: .031" Dykes or .043" Rings ?

Just to let everyone know that PMS in San Antonio, Texas, owned and operated by non other than Adrian ( Pudgy) Pendergrass makes a very nice set up to Gas Port the Spacers. If you have access to a mill its a piece of cake to do it yourself and save some money. 210-681-2405

Last edited by RJ Sledge; 06-17-2009 at 09:14 AM.
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Old 12-04-2010, 07:46 PM   #22
Daran Summerton
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Default Re: .031" Dykes or .043" Rings ?

I vote for vacuum pump and no second rings
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Old 12-05-2010, 02:29 PM   #23
Adger Smith
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Default Re: .031" Dykes or .043" Rings ?

Ed Wright Quote: I'm suprised at the poll resuslts. Didnt know anybody still used dykes rings.
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The Dykes work very well in a blown or pressurized cylinder. When doing some research for the A/Fuel combination I help put together I found out they work where the cylinder is flooded with fuel that is being injected at real high pressure. I'm not so sure I would use them in a N/A engine where other ring combos are available. Esp an engine with no crancase Vac. Ed, call me and I'll explain 903 794 7223 , 903 824 4924 cell.

OH, Butch how many other boards/forums do you have your ring poll on?
Will you share their results with the members here?
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Old 12-13-2010, 03:18 AM   #24
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Default Re: .031" Dykes or .043" Rings ?

Adger here and SpeedTalk,,,,

My whole reason was I always use 1/16" 1/16" 3/16" in a bracket type engine, in an engine like this I have always used Speed-Pro .031" Pressure Back (Dykes) 1/16" 3/16" oil rings,,,, I have seen increased wall wear with 0.043" with gas ports one time so I never visited the area again

I started this thread and the one on SpeedTalk, it seems SpeedTalk's builders prefer .043" and here its mixed

So I have not found a good enough reason to go with the .043"

I stuck with the .031" Pressure back top ring with 1/16" x .140" Napier second and 3/16" oil ring with larger oil return holes and SS50U 5-10 pound oil ring

The .031" rings have always worked for us N/A at high rpm, 6000+ launch and 8000-8500 in the traps. I decided to not venture out and try something new

I will do a second set of pistons later and try .043" or .8mm or so rings, just to see. For what I need I did not want to chance it

The top ring land has always been turned down for us due to the dome being large

Quote:
Originally Posted by Adger Smith View Post
Ed Wright Quote: I'm suprised at the poll resuslts. Didnt know anybody still used dykes rings.
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Ed,
The Dykes work very well in a blown or pressurized cylinder. When doing some research for the A/Fuel combination I help put together I found out they work where the cylinder is flooded with fuel that is being injected at real high pressure. I'm not so sure I would use them in a N/A engine where other ring combos are available. Esp an engine with no crancase Vac. Ed, call me and I'll explain 903 794 7223 , 903 824 4924 cell.

OH, Butch how many other boards/forums do you have your ring poll on?
Will you share their results with the members here?
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Old 12-13-2010, 11:44 AM   #25
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Default Re: .031" Dykes or .043" Rings ?

Butch,
Your polls are un scientific and yes, I think they show skewed results. On this Thread you noted the difference in the outcome of two sites. (thanks, I requested that) You have got to realize "WHO" is the audience you are polling and what they are involved in building. I'm pretty sure there aren't any F-1 cars running a .043 ring with Gas ports, but there is a Pro Stock or Comp field that is probably near 100 % .043 or something thin and gas ported..Yes, an .043 ring with a gas port, or any ring with a gas port will show wear. They are designed to seal, not last. There is a Maint cycle in anything you use. I see you are int different coatings and designs to extend wear and maint cycles.. Good. The guys on Speed Talk and the other forums you visit and poll are into different applications than the guys here on Class Racer.
You can't make blanket statements or poll about what works best for everthing because of: Application-application-application.

P.S I'll try to run those 2 simulations you want on Pipe Max and another program this week as time permits.
AS
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Old 12-13-2010, 03:49 PM   #26
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Default Re: .031" Dykes or .043" Rings ?

Adger I think your 100% correct and didnt look at it at that time that different levels of competition between here and there

As to the .043" we saw wear and to me it didnt seal as well because there was carbon between the two rings, however with the .031" Pressure Back ring we get ZERO carbon below the top ring and superior performance

I still stick with your typical 1/16" ring pack for street or bracket engines (1/16" top, 1/16" second and 3/16" oil or 1/8") and the .031" pack for drag race use (.031" Pressure Back Moly Top, 1/16" second and 3/16" SS50U 5-10 pound oil ring or 16 pound)

However I did an .043" combo to replace the pistons in the engine that shown wear from std .043" x .155" with gas ports, The Gold Finish top ring eliminates the wear at least for me,,, I would suggest the .043" PVD 92 coated ring to anyone now (Gold Finish)

Is it better than the .031" Pressure Back??????? I dont think so for drag race turning 8000rpm+ and leaving at 5500rpm+ ,,,, for a street/strip radical deal yes I would use the .043" x .155" with the PVD 92 coating

So for street or long term bracket racing with minimal tear downs I go 1/16" pack

Drag race with aluminum rods that needs to be serviced more frequent, .031" Pressure Back ring pack

Street or drag race with long term usage such as a drag engine with steel rods .043" x .155" Gold Finish Ring

Quote:
Originally Posted by Adger Smith View Post
Butch,
Your polls are un scientific and yes, I think they show skewed results. On this Thread you noted the difference in the outcome of two sites. (thanks, I requested that) You have got to realize "WHO" is the audience you are polling and what they are involved in building. I'm pretty sure there aren't any F-1 cars running a .043 ring with Gas ports, but there is a Pro Stock or Comp field that is probably near 100 % .043 or something thin and gas ported..Yes, an .043 ring with a gas port, or any ring with a gas port will show wear. They are designed to seal, not last. There is a Maint cycle in anything you use. I see you are int different coatings and designs to extend wear and maint cycles.. Good. The guys on Speed Talk and the other forums you visit and poll are into different applications than the guys here on Class Racer.
You can't make blanket statements or poll about what works best for everthing because of: Application-application-application.

P.S I'll try to run those 2 simulations you want on Pipe Max and another program this week as time permits.
AS
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Old 12-18-2010, 10:33 PM   #27
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Default Re: .031" Dykes or .043" Rings ?

More are using .0325" and .028" rings with gas ports. I don't think too many fast na engines are still using dykes rings. .043" is becoming "old tech".
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Old 12-19-2010, 11:34 AM   #28
Jim Hanig
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Default Re: .031" Dykes or .043" Rings ?

Has anyone had the chance to dyno the 032s over the 043s. Was their any gains ?Did you prep the bores the same? Jim Hanig
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Old 12-27-2010, 12:16 PM   #29
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Default Re: .031" Dykes or .043" Rings ?

I changed too many other things at the same time to say. Mine has not been on a dyno anyway.
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Old 01-11-2011, 10:51 PM   #30
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Default Re: .031" Dykes or .043" Rings ?

I just disassembled a 400 small block bracket engine. Dome pistons.....13+ to 1 compression. .043" narrow radial width top rings with vertical gas ports. The engine has 450 runs on it and still ran fine and rings were not worn out. It is 3 seasons old. I did not build it but I am just going thru it... The car can run in the 9's at 3100+lbs so it is making good power. Never really felt a narrow top ring with gas ports would go that many runs........Well it did and could have run probably quite a few more. The owner uses a restrictor plate to run 10.0's at 7000rpm or so......
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