Valve stem seal replacement help needed!!!
Thread Starter
Instructor
Joined: Dec 2001
Posts: 153
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Valve stem seal replacement help needed!!!
Now that my side pipes are on, the puff of smoke I get when I first start up is
even more :( I saw a killer link or thread that had step by step photos and instructions. Does anyone have a lead on this kind of info? help please!
even more :( I saw a killer link or thread that had step by step photos and instructions. Does anyone have a lead on this kind of info? help please!
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
Re: Valve stem seal replacement help needed!!! (mountainshark76)
Sorry mountainshark76 no lead on that thread. I did put "umbrella seals" on my new S/R Torquers though. Highly recommend umbrellas rather than stock 0-ring seals - my friends and head supplier did too. Also work better with iron guides than PC seals. No machining and bronze guides required - PC seals do. NAPA carries them for ~$7 and I think Pioneer makes them.
You can install them with the heads on using an air fitting in the sparkplug hole and at least 50 psi air. A friend of mine likes to fill the cylinder with rope instead - whatever - then remove the spring assembly.
Good luck. ;)
You can install them with the heads on using an air fitting in the sparkplug hole and at least 50 psi air. A friend of mine likes to fill the cylinder with rope instead - whatever - then remove the spring assembly.
Good luck. ;)
Racer
Joined: Oct 2000
Posts: 405
Likes: 31
From: Houston, Texas
Re: Valve stem seal replacement help needed!!! (cardo0)
I did this last year and following is the procedure I used.
http://forums.corvetteforum.com/zerothread?id=210504
http://forums.corvetteforum.com/zerothread?id=210504
Pro
Joined: May 2001
Posts: 608
Likes: 0
Re: Valve stem seal replacement help needed!!! (mountainshark76)
Just my 2 cents...
I had a bad experience with umbrella seals and had to go to the aftermarket teflon seals instead.
I bought my heads assembled, and they came with the umbrella-style seals.
My problem occured with the valvespring's damper spring. The damper spirng inside the valvespring has a inner diameter that is basically the same size as the outer diameter of the umbrella seal, there was no operating clearance.
After about 2 months with the then brand-new heads, I pulled the valvecovers off and found all these little pieces of what later turned out to be the umbrella seals.
Because of the lack of clearance between the damper and the seal, eventually, when the damper compresses, it acted like a small set of scissors and cut up the valveseals.
I can't give any complaints about umbrella seals, I'm sure mine would've worked okay if the boneheads at world castings would've tested their setup better.
I had a bad experience with umbrella seals and had to go to the aftermarket teflon seals instead.
I bought my heads assembled, and they came with the umbrella-style seals.
My problem occured with the valvespring's damper spring. The damper spirng inside the valvespring has a inner diameter that is basically the same size as the outer diameter of the umbrella seal, there was no operating clearance.
After about 2 months with the then brand-new heads, I pulled the valvecovers off and found all these little pieces of what later turned out to be the umbrella seals.
Because of the lack of clearance between the damper and the seal, eventually, when the damper compresses, it acted like a small set of scissors and cut up the valveseals.
I can't give any complaints about umbrella seals, I'm sure mine would've worked okay if the boneheads at world castings would've tested their setup better.
