Quote:
Originally Posted by Tom Goldman
I have engines with both dual spiral locks ,and the round wire rings.
Mahle has the round wire clips in their specialty performance line.
Since the wire ring engine has not been pressed into service yet ,I cant personally attest to their durability.
That being said , my finger tips were in much better shape after assembling the engine with the wire clips !!
Back in the 80's the machine shop that did my work was building some mighty successful Dirt Modified engines with the wire clips , I cant remember them having any failures. . ...Plus they had some Cosworth engines there which also had them.
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I have not seen a Cosworth piston that did not have round wire rings in them and they started business in 1959. The last V8 Ford Formula One engine they did ran at 19500 rpm without any failures that I can remember. Even flathead Fords had round wire locks.