rocker shaft bolt sequence

[JackFish]

Is there a recommended sequence for tightening and loosening the rocker arm shaft bolts? 1-2-3-4-5-6?

 

[addo]

I'd normally snug them all up one end to the other, then work in a left-right pattern from the centre out.

 

[JackFish]

Would you loosen them from the center as well, or go from end to end? I want to minimize risk of warping when I take it off.

 

[addo]

I'd work into the centre when loosening.

 

[JackFish]

Ok, thanks. :wrench:

 

[Anonymous]

I just counted the turns, and made sure I loosened and tightened everything 1/2 turn at a time.

 

[simon]

...warping when I take it off.

warping what?

even the assembly filled most with sludge and baked-on residues allows movement of the shaft in the pedestal bores; seriously, you won´t be able to build up enough loads to bend the shaft.

its good practise though to bolt/ unbolt about everything in a criss-cross pattern, working from/ to the centre, and snug em tight evenly, like Addo and Linc already said.

 

[JackFish]

warping what?

The shaft. I have no experience with this so I'm just checking with the experts before I go bugger something up!
There is a rattle coming from the front of the engine that's most noticable at idle. A lifter has been ticking up there for a bit and I'm concerned that I may now have a bent pushrod, worn guides and/or ...?
While I have your attention, I was wondering about using this new head I have.
Ported, polished, milled .050, SI valves and 100/180lb springs with dampers, port divider. I want to know if there would be any issues putting this on the stock cam.

 

[Anonymous]

I want to know if there would be any issues putting this on the stock cam.

As long as the cam and lifters are in good shape there will be no issues.

I think the same lifters are used all the way up to 460 size engines. They run a lot more spring than that.

 

[JackFish]

I want to know if there would be any issues putting this on the stock cam.

As long as the cam and lifters are in good shape there will be no issues.

I think the same lifters are used all the way up to 460 size engines. They run a lot more spring than that.

I think I have two sets of new lifters and rods around here somwhere.
Lifters came with Mike's package.
Thanks guys, really appreciate your help.

 

[addo]

Are you thinking about running new lifters on the old cam?

 

[Anonymous]

Are you thinking about running new lifters on the old cam?

I would say he isn't.....

Lifters came with Mike's package.

 

[JackFish]

Well, yes, for the short term. I have a new cam, but don't really have the facilities/tools/confidence to pull the front off the motor and do the cam swap without some help. But I am considering a "back-yard" head swap.
But then I would have to pull the head again if I do the cam later. So I haven't decided yet what to do.
I thought I would start with pulling the valve cover and maybe just dropping in a new set of rods for the time being if my suspicions are correct.
Actually no panic on this. The engine is running very well otherwise.

 

[addo]

If you can get a fairly even spread of compression numbers on a hot engine, leave it be. Cheaper and safer.