when to overhaul a YS ??????
 

Dave,

How do I know when my 63 might need a rebuild/overhaul? How many gallons of fuel can I run through it before it is basically worn out?

Thanks,

Wood

RE: when to overhaul a YS ??????
 

Impossible to tell, really. If the engine has good compression, isn't making any funny noises like bearings falling apart, I would say just run it until it dies.
We've had many customers get 500 plus flights with virtually no maintainance other than setting the valves once in awhile.

RE: when to overhaul a YS ??????
 

Dave,

What would be a good way to measure the compression on a 63?

Thanks,
Wood

RE: when to overhaul a YS ??????
 

When any model engine begins to lose it's seal, the top end power will be decreased, the ability to idle will decrease. It's pretty easy to tell by just turning the engine through the compression stroke while it's still warm from a flight. If it feels wimpy, it probably needs repair.

RE: when to overhaul a YS ??????
 

Dave,

On my 63 FZ, would the typical rebuild be a ring and liner, or piston, ring and liner, or a little more involved than that?

Thanks,
Wood

RE: when to overhaul a YS ??????
 

Maybe only the ring, maybe all three.

RE: when to overhaul a YS ??????
 

Thanks Dave. I appreciate the info.

Wood

RE: when to overhaul a YS ??????
 

No problem, good flying.