Valve Stem Leak

[mjboehm]

I had question, Is it possible to have good compression with valve stems installed incorrectly. I just had a head rebuilt and they installed the valve guide seals wrong.I had to replace all the valve guide seals(found this out after I installed the head).Any info would be great
thanks

 

[SrKegler]

The seals have nothing to do with compression. All they do is stop oil from leaking into the combustion chamber.

Plese explain how they were installed wrong. They only go on one way.

 

[mjboehm]

When I had my head rebuilt I put the head back on my car and the head was puking out oil out of the exhaust ports. So I looked at the valve guide seals and noticed all 16 of them had 3 cuts in top on the seals so the machine shop installed the valve guide seals wrong. It looks like the hammered them in instead of pushing them on. So I replaced the valve guide seals and I was wondering if there was a way to install the valve stems(valve guides) wrong.If that make any sense.

Finally finished my valve guides seals and I started my car and noticed that oil was still coming out of the exhaust ports. So I took off the other valve guide seals and replaced them again. I have to finish my timing belt this week to see it that stops the oil from leaking out of the head.The turbo has been rebuit. I have good compression acrossed the board (185-190). Any other suggestions would be great.

 

[BogusSVO]

if the seals did not fix it, then the guides are worn and need to be replaced, if thats the case then your going to need a valve job too....

http://www.dsmtuners.com/forums/newbie-forum/341218-how-change-valve-guides-4g63t-head.html

 

[mjboehm]

Thats what I had done to the head. I just noticed that is was leaking a little again so I am going to put the timing belt on and see what happens.

 

[BogusSVO]

best of luck with it!!

BTW what seals did you use? brand? color?

 

[mjboehm]

The seals I used where oem(mitsu) light blue color. The ones I took out where felpro9 brown) and they had cuts on all 16 of them. I hope they installed valve guides the correct way.

 

[BogusSVO]

there is only one way to install guides... I hope they set the guide height to about .630

If they did not do a Valve job, the valves would not set, and you be skippin n poppin

 

[mjboehm]

When the car ran it smoked ,but it didn't miss or stall out it sounded really good. I think it is something in the head b/c there is oil on the plugs and plus when I ran the car I cleaned the exhaust ports and valve and noticed there was oil leaking down on the valves.