Well, my thoughts are that your compression numbers are a little confusing! Which I'm sure you thought when you were doing the tests. To go from 0 to 140. Hahah. That's messed up. But totally possible just by having bad lifters versus good lifters in that hole.
So look, all I can tell you is that you should be hopeful that your little problem with the cam gear dowel sheering didn't mess anything up (re: bent valves). At least you know what side it was on, and what head it would affect, and which valves it could have wrecked. The fact that you can get compression in each hole to varying degrees all based upon moving lifters - well - I think you just need a set of known good lifters. I beleive Ash wrote a pretty good write-up, and I also know there is another one too - on how to take them apart and rebuild them. Perhaps since the financial situation doesn't allow for blowing $800 USD on lifters - you should take a dozen lifters (or more) apart and rebuild them. And test that out just like you say.Assuming there is no hurry to the project - why not do that. So yeah, my real thoughts are that the lifters are likely the source of the problem here. And hopefully all the other f**king around with testing, the cam dowel sheering, and the manually pushing of valves in to the piston - perhaps you're lucky and valves are not bent. :-) Lifters could totally be all of your problem here. Like I said, in that car I was working on ... well ... that didn't run and I tore it down to the short block - because we put on new heads - well, it was lifters that was the primary and major problem. There were other problems too. And so while I am thinking of it...when you have your camshafts in position, and your cam journals tightened to spec, and no timing belt on - can you rotate the cam gears by hand quite easily. I mean, can you wiggle them back and forth? Or are they so incredibly tight that you can not rotate them ever so slightly by hand? Just curious, but they should rotate a small amount pretty easily. (Two hands) But not massive force... ANYHOW, about your wet test... The wet test was probably needed here too. Because when you were cranking and not getting enough compression to really start up, all the fuel will have washed any oil from the rings. So that alone lowers compression. It's also something to remember - change your oil and filter - once you get everything resolved here. Because you'll have that gasoline in the oil now. For certain, you'll never get 140 psi compression with a bent valve. So of course that is encouraging. Good luck. Oh yeah, and if you can hear compression leaking, and I'm sure you can because you said you could - it's a sign that valve is obviously open - even if ever so slightly - and it's hopefully the lifter doing it.
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09:15:09 12/17/09
