Quote
Yes get a set of valve seals. The ones I use look like little cups. Take the spring off of a bad one and a good one and without pulling the valve itself look at the difference in the existing seals. The bad one should be cracked or gone completely and the good one should still be holding tightly to the valve..
Then pull the valve out about 1/2 inch from it's seat and ROCK the stem in the hole.. do this to both and see if there is a noticeable difference in CLEARENCE in the two...If not then the seal is the problem...if however you have worn out the guide..ie made the hole too large.. then we need to go to the shop and get all new guides!
OR we neeed to get nother head.. Hopefully the five year old seals were not the best when new and that is the problem.
Big JIm <img src="/forums/images/graemlins/pfft.gif" alt="" />


The new ones look completely rubber, while the old ones look like they had to be stamped on. There is a noticable difference in the "grab" of the new ones, but probably cause they are brand new. The existing seals just look cheap and worn. I ruined one of them not knowing that the metal portion of the old one had to be removed as well and wore out the new one by trying to put it over both the guide and the seal. (noobie move)
Old one
[Linked Image]
New one
[Linked Image]
[Linked Image]


The fellpro kit I got has about everything I need. It just sucks that I had the head off at about 10AM but didn't get the kit till about 330PM.

Either way I still have some surface cleaning to do.


JUST FYI for anyone that is using this thread as a reference in the future. I recomend the prybar type spring compressor. It is faster and cheaper than the one that looks like a gear puller.


lastly, these new ones do not have springs, just the metal clip at the top. Should I replace those with the springs or leave as is?

Last edited by cstimmons; 03/05/07 11:28 PM.
93 Wrangler
4.0L (remanufactured from S&S about 5 years ago)
Mostly stock