I've been reading on the board, about adjusting roller rockers.

Some people seem to say zero lash is when the pushrod doesn't move up and down anymore - and I've read some where they say zero lash is w hen the pushrod has enough resistance so it doesn't spin in your fingers anymore.

Which is it? And do you guys recommend 1/2 turn, or 1/4 turn past that, on a cold engine?

my rocker arms keep coming loose.... damn.

 

up and down... Some people do 1/2 some to 3/4 you pick.

 

Zero Lash is set when you can't move the pushrod up anymore, we are using hydrolic lifters, so if you push down on it they will somewhat collapse themselves, always pull up and let gravity take it back down.

Just did the 1.6's in my Z yesterday and it worked fine, no noise no nothing.

So make sure you get it just to the point were it won't move up anymore, and then set it another 3/4 of a turn to lock it in...

 

If you know what to feel for, the "twist" method will work. The problem is that hydraulic lifter will collapse, especially if they are fairly dry. If the pushrod physically becomes hard to spin you've probably bottomed out the lifter. I think it's just too easy for someone inexperienced to overlash using the spin method. If you shake the pushrod up and down while tightening it's very apparent when zero lash is obtained.

For stock lifters 1/2 to 3/4 turn over zero lash is fine. If you're running the 'R' lifters I would recommend 1/4 turn, no more.

You say your rockers are coming loose. I'm assuming you have aftermarket, fully rollerized rockers with poly locks??? If that's that case I would recommend tightening the rockers 1/4 turn short of the final spec, tighten the locks, and then give it the final 1/4 turn. This locks them down real tight.