Rocker arm problem?

[Gregp]

I have a 3.4l. i just did a comp cam with flat top lifters, and have comp roller rockers. When adjusting the valve lash by adjusting the rockers it ticks when i start the motor. I have put the roller rockers to stock spec and it seems to back off when i start the car? Does anyone know if i need top tighten the rockers any tighter the stock spec?

[tkoforpresident]

Re: Rocker arm problem?

there is a specific procedure to be followed for adjusting valve lash. get a haynes manual or equivalent.

[cam98aro]

Re: Rocker arm problem?

i have never heard of lashing a hydraulic cam before

[ssms5411]

Re: Rocker arm problem?

With self adjusting rockers it should just be how much FT. LBS. they should be TQ to.

[tkoforpresident]

Re: Rocker arm problem?

these are NOT self adjusting rockers.

[Gregp]

Re: Rocker arm problem?

They are not self adjusting rockers. and there is no tq spec! The manual says " reduce the play from the rods ( meaning tighten untill the rod can not turn) and then give it one and a half turns! which seems right because it is snug and feel good untill i put the whole motor back together and find out it still ticks!!! Im going crazy.

[z38camaro]

Re: Rocker arm problem?

whats up greg.

i know exactly what your going through. and it sucks cause it took me and my friend forever to figure it out.

but what you have to do is. turn the engine over. to the COMPRESSION side of each cylinder. and adjust the exhaust and intake valve rocker arms accordingly.

its like they will be snug then when you run the engine it seems loos again. thats because when you tightned them the first time. you didnt tighten them on the COMPRESSION side.

hope that helps man

[cam98aro]

Re: Rocker arm problem?

They are not self adjusting rockers. and there is no tq spec! The manual says " reduce the play from the rods ( meaning tighten untill the rod can not turn) and then give it one and a half turns! which seems right because it is snug and feel good untill i put the whole motor back together and find out it still ticks!!! Im going crazy.

you are doing this with the valves closed, correct?

[3.4grapeofwrath]

Re: Rocker arm problem?

Did you fill the lifters with oil before installing and bleed the air out?

[cam98aro]

Re: Rocker arm problem?

Did you fill the lifters with oil before installing and bleed the air out?

3.4's have flat tappet cams, correct?

you dont need to fill them up, but most people just dip them in oil before installing them

[tkoforpresident]

Re: Rocker arm problem?

yeah, you only really need to give them lots of oil if they are brand new lifters, otherwise you can just kind of drip oil down into the lifter.