Technical > Matt Shaff's Engine Shop

Piston rings?

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Supercat:
What are the common composition of rings for an alcohol engine ? Blown or NA.
Finally putting my engine together.
 I have two different ring sets here that will work for my 4.500 bore. Just want to see what people here think.
This is a 9000 rpm 11-11.5 compression engine

Dunc the Funk:
Last season I put Speed Pro HellFire rings in our 4.53" bore BBC, 10.5:1 static, Littlefield LB22 blower with hi-helix rotors, methanol injection.
Ran 7.50 @ 180 1/4 with plenty left (only 3% od on blower!).
Stripped it today, no issues at all, keeping same rings in for next season. Part no R1910735.

Supercat:
Thanks for the info,  I'll check out the rings to see how they compare to what I have. If needed I may try them out.

e-drag:
Call Bruce for you piston ring needs:

http://bwepistonrings.com/

Tel: (661) 644-6118

He is in Idaho now...

wideopen231:
IN our TA/FC and TA/D we ran SS dyke top and gapless secondary/ Worked great/Held up very well and were anything but easy on the motors. TA/FC leave was 6500 and shifts were 9000 to 9500.TA/D leave was 7000 and shifts were 10,500. Rarely had any leakage to speak of and 99% of the time was not ring problem.

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