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
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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