Valve stem seals and locks
Thread Starter
Instructor
Joined: Feb 2005
Posts: 207
Likes: 13
From: Belmont California
Valve stem seals and locks
I'm going to run a new roller cam with Compcams 953 springs. A machinist told me I shouldn't run Teflon seals (like I have for 35 yrs) on the street because they don't let any oil through for lubrication. Are viton the best choice? I have 3/8 dia stem valves. Is there any advantage to use 10 deg locks over 7 deg?
Thanks for your advice.
TT
Thanks for your advice.
TT
Melting Slicks
Joined: Apr 2009
Posts: 2,632
Likes: 112
From: Great Plains Iowa
I have always felt the Teflon seals are the very best style to use and there is no advantage to using the 10 degree locks other than they're bigger and not as easily dropped as the teensy 7 degree locks.
Race Director
Joined: Jan 2000
Posts: 13,018
Likes: 2,262
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
Teflons are fine if guides are in good shape. Used them for years on the street also. Viton's are more forgiving mainly due to design of most seals made from it.
JIM
JIM
Dr. Detroit
Joined: Mar 2012
Posts: 10,097
Likes: 4,027
From: New Braunfels Texas
On the street....teflons wear out very quickly.
Viton is the way to go....Contact USseal in Fort Gratiot Michigan....they make the best out there....Viton fluroelastomer that is impregnated with 5% Teflon.....
I even use them in my 9500 rpm Vintage Honda bike engines.
Jebby
Viton is the way to go....Contact USseal in Fort Gratiot Michigan....they make the best out there....Viton fluroelastomer that is impregnated with 5% Teflon.....
I even use them in my 9500 rpm Vintage Honda bike engines.
Jebby
