ARP Headstuds and the rocker shafts on an M30

[mooseheadm5]

I wonder if you can use a B34 rocker shaft in a B35 head.

[KillerPM]

I wonder if you can use a B34 rocker shaft in a B35 head.

I dont see why not. Give it a try

Are the rockers interchangeable?

I am going to run a B34 head anyway (as per Todd's advice).

[mooseheadm5]

Wait, which B34 head has 1 piece rocker shafts? I'm looking at the catalog and all I see are two piece, and that's what I remember from the last B34 I did.

[KillerPM]

Wait, which B34 head has 1 piece rocker shafts? I'm looking at the catalog and all I see are two piece, and that's what I remember from the last B34 I did.

Oh crap! Your right.

<<<SNIPPED FOR WRONG INFORMATION>>>

[KillerPM]

Wait, which B34 head has 1 piece rocker shafts? I'm looking at the catalog and all I see are two piece, and that's what I remember from the last B34 I did.

Oh crap! Your right.

Its earlier M30s that have a one piece...

And scrap that one piece... I went back to 1973 and they are all two...

Hmmm... My information source was incorrect...

[LynnBilodeau]

All the big six engines from E3 through E32 and 34 use the same rockers and shafts. Four shafts. Each one is different, i.e. left front left rear, etc.

Rockers are same back to about 1966, and are same as 2002, 1600 etc.

[Cjames570]

Am I gathering from this that it's a non-issue on a B34? I haven't had the valve cover off of mine yet so I'm not sure of the differences between b34/35 heads.

[FirstFives Dictator]

http://e28-535i.com/upload/shaftlock.web1.jpg

Very simple solution.

If you want a little more peace of mind, you could drill into the shaft about .020" to sink the set screw. Probably not necessary.

This, I like...

[LynnBilodeau]

Am I gathering from this that it's a non-issue on a B34? I haven't had the valve cover off of mine yet so I'm not sure of the differences between b34/35 heads.

Same problem on any of the big six heads, M90, b34, b35 etc.

[sideways7]

i have looked into having custom head studs made for my m30 application in a stronger material than the standard arp. something equivalent to arp's L19 material. the cost is extreme for one set but almost drops in half for the second set and so on. would anyone be interested in a higher quality set for some more money than arps? this would obviously be for extreme builds. let me know if you are.

mark

[Shadow]

well how much are we talking?
will they have the correct shoulder and thickness?
The L19 for s54 is $400

[Nosis]

Bumping an old thread to ask for thoughts on another possible solution to this problem.

What if one were to wrap .008in (approximately .02mm) steel wire around the bottom 2-3 threads of the UPPER threaded portion of the ARP stud (lower enough to ensure non-interference with the nut) and below for another inch or so. The result would be a "thickening" of the surface of the ARP by almost exactly the desired .04mm.

By pre-bending the wire around a dowel just smaller than the 11.9mm ARP shaft, and careful placement, the wire would hug tightly to the ARP. The wire would look like a spring around the shaft.

To address the concern of the spring un-screwing itself from the bottom few threads and then falling down the shaft of the ARP, some length of the top of the wire could be straightened and crushed under the large washers beneath the top nuts.

The wire...

http://www.amazon.com/dp/B0018N4GF8/ref ... YE82GK02HX

Maybe worky? Thoughts?

[T_C_D]

Bumping an old thread to ask for thoughts on another possible solution to this problem.

It's not a problem.

[Nosis]

Bumping an old thread to ask for thoughts on another possible solution to this problem.

It's not a problem.

Whew... that was easy!