Tom Fleming
Well-known Member
well, after getting sidetracked with the F-14 and getting her running, I am back to the regular. clutch is working find now, and the coupler is rebuilt (ouch on the cost of the plate).
So, she is nice and free on the engine, but no compression. Did a number of tricks, and still nothing. Took the head off, and the old girl needs a valve job in the worst kind of way. Seats are going to be fine, just need to dress them up. Ground new faces on the valves and was able to salvage 6 of the 8 valves. 2 are junk. 1 broken valve guide. So, I ordered 2 valves, 1 guide, and keeps, retainers, etc, since these are the old style valve keeps.
I have a question though, as I haven't seen this on a "loose" engine. The valve that had the broken guide had a bent stem on it. Probably what broke the guide. I see no indications of anything nasty in the combustion chamber. In fact, the sleeves are in really good condition, which makes me think this may have had new pistons and sleeves at some point.
How the heck does a valve stem bend on a low compression, loose engine? Was thinking of a couple of scenarios, but couldn't come up with a possible answer on it......unless the valve was bent (new) and installed that way.
So, she is nice and free on the engine, but no compression. Did a number of tricks, and still nothing. Took the head off, and the old girl needs a valve job in the worst kind of way. Seats are going to be fine, just need to dress them up. Ground new faces on the valves and was able to salvage 6 of the 8 valves. 2 are junk. 1 broken valve guide. So, I ordered 2 valves, 1 guide, and keeps, retainers, etc, since these are the old style valve keeps.
I have a question though, as I haven't seen this on a "loose" engine. The valve that had the broken guide had a bent stem on it. Probably what broke the guide. I see no indications of anything nasty in the combustion chamber. In fact, the sleeves are in really good condition, which makes me think this may have had new pistons and sleeves at some point.
How the heck does a valve stem bend on a low compression, loose engine? Was thinking of a couple of scenarios, but couldn't come up with a possible answer on it......unless the valve was bent (new) and installed that way.