ORIGINAL: viperdada
That engine is a piece of cake to fix and real easy. You said you have heli-coiled car cylinder heads?? Than this is easy. I always have bought used engines and with great sucess, except for a surpass 91, after two flights quit due to a broken valve spring, so now every used engine I buy, I replace a few cheap valve springs. I can't figure out how someone strips a glow plug hole, if they cross thead it or over tighten it, then they should not have the finess to even fly a plane, and maybe that is why th guy sold it, I didn't here of any restitution from this guy, right? I bought a engine here, and the engine was bouncing around in the box, lost the prop nuts and washer, damged muffler and the guy made good, so this should not sour you on 4 strokes or even used engines, being most of us are honest. That guy should relize you have a car and his address!
Life sometimes is like circumsizing an elephant, the pay is low but the tips are big!
Just to clear up a few things I've never re-threaded a car cylinder head it was on the transmission of an old POS mustang I had, it was my first car. I don't know how someone cross threaded or damaged the threads but yeah not to good. I bought the plane in a shop in Dallas TX it was on consignment I won't give the name of the shop because they are in any way at fault. I live in North Dakota and I did not get the guys name and address, so there will be no restitution they sold the plane as is. I should have know something was amiss when I found out that the plane had been there twice for consignment from two different people, as I told them the plane would not be back a third time. Oh well my mistake and the only person I can be upset with is myself, but hopefully the engine will be running soon for under $60.