Who's there? What will make an engine knock besides main and rod bearings? The mains look OK so far (cap side) except for a little discoloration. I will look at the rods tommorrow, but I didn't see anything unusual when I turned the engine over or wiggled the rods on the crank. If I stacked a rod bearing I think I'd get more than a muffled knock, more like Bang-Bang! (been there!) The flex plate is a thick SFI approved unit. The valve train looks OK. Didn't see pieces of piston missing! o No: Any ideas for other places to look?
KNOCK KNOCK? I had a muffled KNock and found it to be a loose torque converter bolts and I double checked the flywheel bolts too o No:
I did find the center of a converter stuck in the end of the crank where the pilot bushing goes! I'll double check the bolts holding the flexplate on. If I don't find anything, I'll put it back together and run the poop out of it! :bglasses:
Well, I found nothing nasty with the rod bearings. Other than piston slap or a loose wrist pin, (and converter bolts) I don't know where else to look. I hope I don't find out the hard way! :ball:
Have you tried isolating the area of the noise with a stethoscope? Wouldn't the cam bearings/cam make a noticeable noise if one or more went bad? Maybe the fuel pump rod/timing chain area? Let us know what you find. Scott
How's the crank look? The bearings don't look bad - although the top one looks like it's wearing a little different. Scott
knocking alan, make sure none of the rods/rod bolts are hitting the oil pan in the front half, there isn't much room here and if the pan is bent in just a little it can make contact here....seen it happen......
The main bearings look about the same as the rods. The top rod bearing looks "stained", but feels smooth. The engine has a main girdle, so the pan is about 1" lower than normal.