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-   -   Valve seals (http://www.clubcobra.com/forums/fe-talk/141477-valve-seals.html)

classical glass 09-23-2018 06:32 AM
Valve seals
 
What is the best procedure to replace all the valve seals on a 427 side oiler? Also what would be the the seal of choice?
Thanks....

FWB 09-23-2018 08:33 AM
depends, "Best" is subject to opinion, heads on or heads off, with the correct tools or backyard caveman style.....without knowing tools avail best is subjective

classical glass 09-23-2018 11:00 AM
Valve stem seals
 
I really don't want to pull the heads I would like to install them on the car. I purchased a valve spring compression tool that will slide over the rocker shaft. I have installed seals on GM motors before so I know the basics. My main question is what is the best way to index the engine so both valves are closed. I do have a air pressure spark plug adapter tool to keep the valves closed when the valve springs are removed.
Thank

Grubby 09-23-2018 12:46 PM
There is a tool that screws into the spark plug hole and allows you to use compressed air to hold the valves shut. It makes me pucker, but I have used it with success on several engines. The air pressure actually pushes the piston to the bottom of the stroke - pucker.

The other option is to put the piston at TDC and feed some small cord thru the spark plug hole to hold the valve up. I have not personally used this approach.

There is no way I would pull the heads just for seals.

John

Grubby 09-23-2018 12:51 PM
On an FE if you loosen the rocker shaft all the valves will close.

HTM101 09-23-2018 01:07 PM
Quote:
Originally Posted by classical glass (Post 1451568)
I really don't want to pull the heads I would like to install them on the car. I purchased a valve spring compression tool that will slide over the rocker shaft. I have installed seals on GM motors before so I know the basics. My main question is what is the best way to index the engine so both valves are closed. I do have a air pressure spark plug adapter tool to keep the valves closed when the valve springs are removed.
Thank
I replaced all springs, locators, retainers, locks and seals on my engine a few weeks back. PM me if you'd like, and I'll be glad to help with your questions.

David

FWB 09-23-2018 04:07 PM
with factory heads and the larger plug hole, the nylon rope works good, you can even get your finger in there too for a little rope assistance.

with aftermarket heads and peanut plugs, the compressed air is probably the path of least resistance.


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