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Author Topic:   dykes rings
Dirt Full Roller

Total posts: 61
posted January 24, 2003 08:55 PM
Anybody ever use them? Any piston manufacturers make lands for them? THX

Dirt Maniac

Total posts: 135
posted January 24, 2003 10:42 PM
A few years ago, I built sort of an experimental 377 with, among other things, a top dykes ring, with a VERY low rms finish on the cylinder walls, like a mirror. 2bbl, iron ported Dart heads, unlimited compression. I didn't get it done and in the car until the last nite out. Running against 406's, it ran so well that all the big dogs made a point to "visit" our pits after hot laps, just to see what was up. It then proceeded to break a rocker arm at the beginning of the heat race. The cube limit went to 370 the next year, so the motor never did get a chance to kick booty, and we never did put it on the dyno. However, I have used exactly the same combination since then, without the super wall finish and dykes ring, and the engines did not run as well, according to the driver. Any of the custom piston makers will cut a dykes groove for you, and Speed-Pro and C&A have a good selection of rings. Personally, I don't know why they are not in wider use, maybe someone else does.

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