Blown Valve Seals?
#1
Blown Valve Seals?
Last year sometime I remember reading an article that if you have a cam that has greater than .550 lift with stock rockers that it wears down the valve seals faster. Now I need to search for the article. But any ways my cam has lift of .588 and .595..
When my car idles, it blows out what I think is oil and man does it smell (see my vids). My cam has prolly about ~7k easy miles on it.
So are my valve seals going? And what could that smoke be?
EDIT: here is a similar thread to mine from last year.. Everyone things valve stem seals or worn valve guides. Still trying the post about the cam vs. rockers
https://ls1tech.com/forums/generatio...e-exhaust.html
found my dyno vids from last year where you can clearly see the blue smoke
When my car idles, it blows out what I think is oil and man does it smell (see my vids). My cam has prolly about ~7k easy miles on it.
So are my valve seals going? And what could that smoke be?
EDIT: here is a similar thread to mine from last year.. Everyone things valve stem seals or worn valve guides. Still trying the post about the cam vs. rockers
https://ls1tech.com/forums/generatio...e-exhaust.html
found my dyno vids from last year where you can clearly see the blue smoke
Last edited by TORCHD 02 TA; 03-31-2010 at 12:59 AM.
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#8
All that said (sorry a little long) the videos don't look that bad. Smoking on deceleration can be an indication of valve issues, but, you were on the dyno. The smoke could have been fuel or oil from the pcv system dumping into the intake.
If you are concerned that the valve seals are bad, then change them & install roller rockers w/ confirmed correct pushrod for a narrow valve wipe pattern. This way you can be sure that the valvetrain is set up as well as can be. Good-luck