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1| ChargedDust
rrNovice Mastic NY U.S.A. |
O.S. 61 SF-H I have this engine that I bought used, it's the helicopter version with the black head. It needs a new piston and ring. I bought what I thought were the right parts, 27703200 piston and 27703400 ring but they are not correct. The 27703200 piston is .900" and the piston in the engine is .940", didn't measure the rings but laying one over the other it's clear they're not the same. SO - anyone know what the correct piston and ring are?? |
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 Rojoalfa
rrKey Veteran Punta de Mata, Monagas-Venezuela |
/Part #27703400 This is the ring for OS .55HZ, .61SF, .61SF-H, .61SF-HG o .61RFBore: 0.91" (23mm)I don't know but... Are you comparing a wasted ring with a new ring?  That is the ring !/ |
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| Rojoalfa
rrKey Veteran Punta de Mata, Monagas-Venezuela |
/PM sent./ |
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| GMPheli
rrElite Veteran W. Bridgewater, MA USA |
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