RAMM
Well-Known Member
.0025" is the minimum spec. Of yours was .002" that IS .0005" under spec. Whether that is enough to cause trouble, I sorta doubt.....but you never know.
This is not the problem. J.Rob
.0025" is the minimum spec. Of yours was .002" that IS .0005" under spec. Whether that is enough to cause trouble, I sorta doubt.....but you never know.
I had .002 clearance plastigauged on all mains and crank was polished. Engine ran great for 3500 miles and with no warning at all I lost oil pressure and it died immediately. Nothing wrong with oil pump, drive shaft, cam gear or timing chain. running amsoil z-rod 10w 30 @ 60psi when its warmed up at idle. What did I do wrong?
yeah its a 4 speed, when i got it home i checked everything with the cam, valve springs, lifters and oil pump i primed it and everything looked good. so i made the mistake of trying to start it again. oddly enough the starter cranked it fine but its a high torque mini starter, only thing that clears my headers. when it fired it took about half throttle to hold it at 400-500 rpm so i shut her down right away.
did you youse your old oil pump?? is the pick up tube cracked sucking air you clearence is a little tight but i dont think that was the problem know im not being a smart *** but i see your bearings are in the wrong way i mean your main bearings the ones with the hole should be in the block .
did you look at the pics the main bearings 1-2-and 4 are in wrong thats why he has the problems he does .?
In your other thread you described the noise as a squeal or screech. That's a tell tale sign of a bearing noise?
I'm afraid your looking at a complete freshen of this engine:sad7:
that's pretty much what im thinking right now. im taking it all apart and I gotta wait til i have the cash to do everything right. everything will be checked at the local machine shop. no corners cut this time. oversize pistons and all. im just lookin around for stuff to sell at this point haha
I would think the pump drive would shear pretty easy if there was junk stopping it, I have seen them sheer off in motors with 20W50 people had to start below zero.
I have been watching and reading this thread. After looking at the pictures several times and reading the posts several times I am thinking along these lines.
1. I can't see how that peice of metal got past the screen on the pick up tube.
2. Oil Pump clearly has damage.
3. Metal was in the oil filter.
4. No obvious damage to the mains and crank bearings.
5. Squeals and noise with loss of oil pressure.
6. Engine died when this happened.
With all this I have to wonder if there was a peice of metal that stayed in the oil pump when it was manufactured or maybe there was a peice of metal inside the pick up tube? The damage to the oil pump would account for the noise and it binding up from the peice of metal could kill the car. Now guys correct my reasoning here if I am off base.
I would think the pump drive would shear pretty easy if there was junk stopping it, I have seen them sheer off in motors with 20W50 people had to start below zero.