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HomeRC & PowerAircraftHelicopterEngines Plugs Mufflers Fuel › blew a hole in my 91HZ piston: cleaning procedure?
02-27-2018 02:15 PM  8 months agoPost 21
cudaboy_71

rrElite Veteran

sacramento, ca, u.s.

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Good info. Thanks for the research. Unfortunately both of the .91hz I have had were used. And, no way to know what was run in them. But, all I’ve ever used was Curtis wildcat 30% which is all synthetic. I do run the .2mm shim.

This last gallon idle has been very good off of auto. So, I think tuning is good now—I did have to fiddle with the idle screw when I first got this motor.

if it ain't broke, break it.

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HomeRC & PowerAircraftHelicopterEngines Plugs Mufflers Fuel › blew a hole in my 91HZ piston: cleaning procedure?
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