Rockers loose after machine shop work

[Jake1174]

Hoping someone can shed light on this.

Removed the cylinder head and had it reconditioned at a machine shop. Ever since there is a slight gap between the rocker and the valvestem on the intake side only. The lifters are not collapsed and the pushrods are stock. Is it possible that machining the head caused some valvetrain geometry issue?

Thanks!

 

[caulk04]

Have you mixed up parts?

 

[Jake1174]

Confident that's not the case.

 

[Burla]

What did recondition mean? Where they warped? He removed material on the head itself to get flat? If the truck is running poorly, likely the easy fix is just get a new head on that side. So the shop had nothing to do with the mechanics work, they just "fixed" the head, just one or both?

 

[Wild one]

Hoping someone can shed light on this.

Removed the cylinder head and had it reconditioned at a machine shop. Ever since there is a slight gap between the rocker and the valvestem on the intake side only. The lifters are not collapsed and the pushrods are stock. Is it possible that machining the head caused some valvetrain geometry issue?

Thanks!

Have you ran it since this,it might just be that the lifters haven't pumped back up. There will be some gap on the rockers to valvestem to allow for expansion. Check the gap with a set of feelers gauges after you've ran the engine for several minutes,means pulling the valve covers back off the engine when it's hot,but it's the only way you'll be able to check for proper gap. Other option is bolt it all back together, it,if it runs normally and doesn't have lifter noise, don't worry about it.