Valve Stem Seals????
Thread Starter
Cruising
Joined: Jul 2021
Posts: 11
Likes: 1
Valve Stem Seals????
I'm in the middle of rebuilding my 1989 heads and had summit recommend a specific valve seal, but they don't fit over the valve guides... like not at all. I went back and found some CompCam seals that say they fit the L98 heads, but guess what....? They don't fit either. It seems that the recommended valve seals have an ID of .53 in yet the valve guides are tampered at 5.5 on top and 5.6 at the bottom. Has anyone replaced theirs and can recommend the ones needed for an L98 with aluminum heads?
Safety Car
Joined: Mar 2003
Posts: 3,583
Likes: 504
From: Indianapolis IN
Finalist 2020 C4 of the Year - Unmodified
C4 of Year Finalist (stock) 2019
These are what I used in my aluminum headed 1987...which is the same as your 1989. Worked perfectly.
Intake: FEL-PRO SS72527
Exhaust: FEL-PRO SS72877
Intake: FEL-PRO SS72527
Exhaust: FEL-PRO SS72877
Drifting
Joined: Jan 2021
Posts: 1,312
Likes: 383
From: Northern California
I also used those FelPro guide seals and they are perfect. They are a press fit down over the valve guide bosses, using a light tap with an appropriately-sized deep socket or other tool of your choice. You can probably press them down with your fingers as well.
