valve lash adjustment???
Pro
Joined: Dec 2002
Posts: 560
Likes: 1
From: Mooresville NC
I read two scenarios. When rebuilding an engine with fresh new parts use either a feeler gauge or the push pull method on the push rod until lash is zero then tighten .5-.75 turns on the nut. The other scenario is when the engine has been driven is to start the car until warmed up, and while the engine is still on remove the valve cover and loosen the rocker nut until you hear it clatter. Tighten slowly until clatter goes away then tighten .5-.75 turns. It's messy even with rocker arms splash guards.
I tried both methods and the push pull did not work for me, it seems the lifters bleed down a bit when they are worn causing excessive backfire at high RPM. Apparently the lifters pumped up. The second method worked like a charm.
Good luck.
I tried both methods and the push pull did not work for me, it seems the lifters bleed down a bit when they are worn causing excessive backfire at high RPM. Apparently the lifters pumped up. The second method worked like a charm.
Good luck.
Le Mans Master
Joined: Mar 2004
Posts: 7,493
Likes: 1,502
From: Little Rock AR
Originally Posted by Avette4me
I've always spun the engine a little to pump the hydraulic lifters up when adjusting valve lash...
Is that really necessary?
Is that really necessary?
-Mark.
Le Mans Master
Joined: Apr 2000
Posts: 5,202
Likes: 10
From: cincinnati ohio
St. Jude Donor '09
First off, hydraulic lifters should have no "lash" second, of all the hydraulic camshafts I've installed stock or performance it was never neccessary to adjust any of them running
Thread Starter
Le Mans Master
Joined: Jan 2003
Posts: 6,575
Likes: 1
From: Tuttle OK
Cruise-In VIII Veteran
thanks all...they're adjusted..I knew how to do the adjustment, just wasn't sure about the lifter needing a bump..stingr69 made it clearest to me...springs, good idea..
and yellow 72, they're my lifters, I'll call it lash if I wanna...
and yellow 72, they're my lifters, I'll call it lash if I wanna...
