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Ringed or ABC

Old 05-13-2003, 04:05 PM
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Default Ringed or ABC

Mr. Davis,

Which would be the best choice for a Diesel conversion:

a Fox .60 ringed -- or A Fox .60 ABC ???





Oily in Germantown

Francis
Old 05-15-2003, 04:00 AM
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Default ringed, or non ringed, that is the question.

I have been flying O.S. conversions for about 8 years now. I have personally found no real performance difference between a ringed engine, and one that is not of the same type, and size.

BUT, I do find the ABCs are easier to start. It seems the ringed engines, just don't have the compression needed when they are cold to start easy.

I have an O.S. SF-40 that started out as a ringed engine, then got turned into an ABC, when the ring broke on me. I had to change both piston and sleeve to do it. But now life is much better. Now it pulls my Big Stick around, swinging a 11x7 APC at 10500 RPM static. Things should get better as it gets broke in again.

Dave

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