What is goiing on here? Valve stem problem?
10-25-2008, 07:08 PM
#1
What is goiing on here? Valve stem problem? I pulled off my intake manifold today and got quite a surprise. As you can see there was a ton of oil (I wiped some of it off before I took the pictures, but it looked the consistency of mortar or mud) all over the intake for #5. The #5 runner on the manifold is also covered with the stuff. As you can see #5 piston doesn't exactly look like the others either. I pulled the manifold after the spark plug from #5 came out with oil all over the upper threads and a shiny clean electrode. The other runners iin the intake only have the typical light coating of oil - nothing at all like the sludge on #5.
The car ran just fine, but was using oil enough that I noticed.
What is this? I appreciate any help. I have a few other fun problems after this one gets sorted out
like a leaking crank plug that has been coating my clutch with oil since I put the drive train together.
The combo is LS2 402 block, Livernois Stage 3r heads, long tubes, standard stuff, different car
The car ran just fine, but was using oil enough that I noticed.
What is this? I appreciate any help. I have a few other fun problems after this one gets sorted out
like a leaking crank plug that has been coating my clutch with oil since I put the drive train together.The combo is LS2 402 block, Livernois Stage 3r heads, long tubes, standard stuff, different car
10-25-2008, 09:16 PM
#2
Was there teflon or a sealer on the threads of the rocker bolt? That could cause it. Hopefully it is something like that, and not something major.
I know a guy who had a leaky rear plug in an Eagle crank and he used JB Weld to seal it up. Worked like a charm, just don't go crazy with it.
I know a guy who had a leaky rear plug in an Eagle crank and he used JB Weld to seal it up. Worked like a charm, just don't go crazy with it.
10-25-2008, 10:17 PM
#3
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from the pick you have it looks like that piston has detonation damage around the edges. It might just be the way the pick looks but if the ring land is damaged that would explain the oil. Get a close up pic of just that piston. How does the bore look with the piston at BTDC?
10-26-2008, 08:38 AM
#4
Was there teflon or a sealer on the threads of the rocker bolt? That could cause it. Hopefully it is something like that, and not something major.
I know a guy who had a leaky rear plug in an Eagle crank and he used JB Weld to seal it up. Worked like a charm, just don't go crazy with it.
I know a guy who had a leaky rear plug in an Eagle crank and he used JB Weld to seal it up. Worked like a charm, just don't go crazy with it.
I bet that is it. I didn't even think of that, but these heads have a ton of port work on them. I am surprised that I only had the problem in one cylinder.The piston is not damaged in any way - that is just the muck that I haven't cleaned off yet.
