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I was changing my oil tonight to send in an oil analysis and when I pulled the second plug it had a little tiny spring on it. I'm guessing it came from a valve seal? Some smaller metal shavings too. I was going to have the oil analysis done to see how my WCCH heads with bronze valve guides are doing. The rebuilt heads have about 3000 miles on them now. Any advice on my next steps to take would be great 07 Z06.
Spring for either a Valve oil seal, or the spring for the timing chain cover seal for the HB or rear main seal.
And yes, you get to strip the entire engine down to figure out the problem and damage, as well as replace a lot of oil cooling parts that there is no way to flush the debries out of them.
With luck, it one of the valve oils seals, and get to put the cost of the repair back on how every did the head work. Hence part of working on LS-7 heads is to check the vavle guides to vavle stems wiggle, and if there is a ton of lash that the new SS vavle steams are not re-solving, then the heads need to have the vavle guides replaced isntead. Hence with the vavle having way to much lash/wiggle, it going to trash valve guide seals.
There are no springs on the crank shaft seals...That could only come from the valve stem seal. It is a fairly easy fix, if you're handy. If you pull the valve covers, you should be able to see which one is missing a seal. Might be a good idea to make sure none of the other ones are close to coming loose as well.
There are no springs on the crank shaft seals...That could only come from the valve stem seal. It is a fairly easy fix, if you're handy. If you pull the valve covers, you should be able to see which one is missing a seal. Might be a good idea to make sure none of the other ones are close to coming loose as well.
One of the easier repairs if your good at turning wrenches. Need some special tools though, air compressor would help and on head type valve spring compressor. Might be able to do without the air compressor if you bring the piston to TDC in the cylinder that you are working on. This way the valve may only drop so far when releasing the spring and retainer.
Or rip the heads off and have them do it all over again.
With the metal, I'm not to sure that came from the seal.
Last edited by extrapilot; 07-08-2016 at 01:26 PM.
One of the easier repairs if your good at turning wrenches. Need some special tools though, air compressor would help and on head type valve spring compressor. Might be able to do without the air compressor if you bring the piston to TDC in the cylinder that you are working on. This way the valve may only drop so far when releasing the spring and retainer.
Or rip the heads off and have them do it all over again.
With the metal, I'm not to sure that came from the seal.
I could deal with a bad valve seal at 3K miles, but those metal fragments tell a much bigger problem exists. Before you do anything, contact WCCH and/or anyone else who was involved when the heads were done. Unless you do all your own work and have the time to do it, pulling that engine and striping it to the max will not come cheap.
I found an exhaust valve seal destroyed by looking through the springs. Called WCCH and they were very helpful. Looks to me like the valve seals have a metal casing around them? Could that be the metal shavings? Springs are still on. I'm going to wait till Monday and see further what WCCH wants to do.
I found an exhaust valve seal destroyed by looking through the springs. Called WCCH and they were very helpful. Looks to me like the valve seals have a metal casing around them? Could that be the metal shavings? Springs are still on. I'm going to wait till Monday and see further what WCCH wants to do.
Probably, the seal got crushed under the retainer when it slipped off the top of the guide.
07-08-2016, 01:26 AM
Help found something in my oil.
