Snapped rocker bar

[MetaJacko]

Originally posted by FatBoy


Hi Paul,
It is a relatively common problem. I had a 427 S/O will all Crane valve gear and over a period of 2-3 years, I broke 4 rocker shafts. I assume it has broken across the end post. The problem is that the end rocker is unsupported and with a high-performance valve train, the loads are very high.
There are a number of products that include modified end posts that fix the problem. Some of the higher end products also include full roller setups and look very "sexy".
Contrary to what trularin has said, I don't think you have a problem elsewhere and you don't need to dismantle your engine.
Sleep easy :-)
Regards
Paul

Hi Fatboy,

Yep thats exactly where it broke!

I assume by you saying about Crane valve gear that you get
different shafts depending on whose valve gear you use

Unfortunately I'm not much of a mechanic and at the moment
a frendly mechanic I know is just looking for anything else that
may be faulty. We did check compression with both valves closed
and no air seems to be escaping.

Any suggestions on how to identify the shaft to get a replacement
(and the push rods for that matter)
I would sooner avoid changing the whole valve setup and cam at
the moment. (my wife already thinks I spend too much on it )

Thanks

Paul