Valve lash @ fresh start up?

[wedge5]

I just put new heads/rockers on my motor and was wondering what the valve lash should be set at? should I go with the recommended lash from the cam card or should they be set at 0, warm the engine and then set them to the recommended lash? The motor is broken in already. I was thinking that they should be set per the cam card but wanted to make sure.

 

[RustyRatRod]

I guess since you say the cam card says zero lash, we're talkin about a hydraulic camshaft. If so, and you are not running some kinda fancy anti pump up lifters, they need some preload. I would go zero lash and one quarter turn, but that's just my opinion.

 

[Hemi Rebel]

I just put new heads/rockers on my motor and was wondering what the valve lash should be set at? should I go with the recommended lash from the cam card or should they be set at 0, warm the engine and then set them to the recommended lash? The motor is broken in already. I was thinking that they should be set per the cam card but wanted to make sure.

Whats recommended on the cam card?

 

[wedge5]

The Cam card says, HOT .018 intake/.020 Ex. not 0. I didn't ask if the card states a certain amount should I go with that or go with 0. I was just asking if I should use the card as a reference or just start at 0.

Thanks alot for the response guys. That is time you will never get back. I appreciate it alot.

 

[Meep-Meep]

Your question doesn't make sense to me. Are you implying the cam card has a setting that is greater than zero lash? Zero means hydraulic, meaning no gap between the rocker tip and valve stem. But if it's hydraulic you must have some lifter preload. What I do is set the 3/8-24 adjuster screw to one full turn FROM zero lash. The correct way to do this with factory type lifters is to get the spec from the factory service manual and set accordingly. It usually goes something like finding the lash (total plunger travel with a dry lifter) and set the push rod length (or adjuster screw) somewhere in the middle.

 

[wedge5]

You are right, I am wrong so you win and I lose.

Now that we got that out of the way. I reread my post and you are right it makes no sense. Guess my mind was working faster than my fingers.

Sorry for wasting your time.

 

[Meep-Meep]

???? It's not about win or loose here. My pea brain was just trying to make sure it understood what you meant. I was sure I had it right but spelled it out for my own clarification. No time wasted and all is well.

 

[coloradodave]

What about the cam card that says: HOT .018" Int / .020". Exh. ? That indicates a solid lifter cam, which should be adjusted to those settings. We need some clarification. How abour scanning the cam card and posting it?