"Front compression at 130, rear at 163. Just got the front heads off
this evening. It's looking like a burnt intake valve. Now I could figure
out how to get the rocker shafts out so I can measure the springs. Or
will the rockers roll back far enough to remove the springs with the cam
out?
....
I was hoping it wasn't going to come to the slide hammer. Got one in
the toolbox, but was concerned about damaging the oil banjo threads.
Does the cam spacer & cam require the hammer as well?
....
Only 85K and change...
I think the problem stemmed from several issues. A severely
cracked./split carb joint (was running ok prior to replacement) and mis
adjusted valves (exhaust wasn't closing - no compression, no fire). "
Tim,
Bummer about your engine. I had to go into mine the first time around that
same mileage for a broken cam chain tensioner/guide. I guess neither of us
was blessed with one of those "200,00 miles" engines. I have a couple
comments, though.
130 is not all that low - wouldn't a burned valve make it worse than that?
And a burned intake is very strange, especially if your exhuast was too
tight. Did you adjust the valves back to spec before checking the comp,
because tight valves reduce compression?
Yes, you have to use a slide hammer, but it goes in the threads (6mm I
think) in the rocker shaft that are there for that purpose alone. The
banjo threads go into the aluminum, right? Just get a really long 6mm
bolt, or some all-thread, and put a little weight in there to tap it out
with. The cam and front cam bearing come out by hand.
Good luck.
Jeremy
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