View Poll Results: Is LUCAS heavy duty oil stabalizer all its cracked up to be?
yes
3
60.00%
no
2
40.00%
Voters: 5. You may not vote on this poll
valve adjustment
Thread Starter
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Freshman User
Joined: Jan 2004
Posts: 44
Likes: 0
valve adjustment/LUCAS oil good?
So when I get my vacuum problem figured out I need to do a valve adjustment, but I don't know how tight to make 'em. I hear them chatering under the cover well especially one in paticular in my '68 f250. also I wonder about putting that LUCAS wonder oil in my truck anybody know of it.
Last edited by retrogod1; Mar 21, 2005 at 12:25 AM. Reason: forgot something
Elder User
Joined: Jul 2004
Posts: 920
Likes: 0
From: Westminster, Colorado
Make sure your oil is full.......the hydraulic lifters won't "pump-up" without adequate oil pressure and you'll hear them tap more....if it persists, my guess would be you have a collapsed lifter....meaning it can no longer "pump-up" for some reason.
I didn't realize that the valves were "non-adjustable." Can anyone claify this, because I have found MORE than ONE source detailing how to adjust these valves.
I didn't realize that the valves were "non-adjustable." Can anyone claify this, because I have found MORE than ONE source detailing how to adjust these valves.
Posting Guru
Joined: Oct 2004
Posts: 1,008
Likes: 0
From: Annapolis,MD.
There is a sequence to tightening the rail on FE's other than that,no adjustment.You can get different length pushrods to compensate for any excess lash though.But you have to find out where the extra play is,i.e.collapsed lifter,worn cam,"sunken" valve,etc.There are also adjustable pushrods,but I haven't seen them in awhile.
Posting Guru
Joined: Mar 2003
Posts: 1,622
Likes: 0
From: nevada
pushrods
SRD is right with the longer length pushrods. yrs ago when my 100,000m 390 starting clicking, I pulled the valve covers and with the engine running found out which ones had "play" in them. Went to the parts store and bought a few that were a tiny bit longer and replaced the worn ones. Make sure the ones that you reuse go back in the same place. All the noise went away and I drove it for another 5 yrs before rebuilding another 390. BTW, your rocker arms can wear too, with new 390 I installed all new valve train for about $125.
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