[Mgs] rocker threads causing problems

[Clayton Kirkwood]

The fit Is correct. This is a 79 B so I don't think the threads are
Whitworth

-----Original Message-----
From: Vance Navarrette [mailto:v.navarrette at comcast.net] 
Sent: Thursday, October 07, 2010 4:32 PM
To: 'Clayton Kirkwood'; 'MG List'
Subject: RE: [Mgs] rocker threads causing problems

	Clayton:

	Are you sure they are SAE threads on the studs? You don't say
which model you are working on, but the possibility exists that they are
Whitworth threads, not SAE, metric or Imperial. They may be stripping
because only the very edge of the threads are gripping the studs.

	Is the fit loose/sloppy when you thread the nut on the stud?

	My Mini-Cooper had Whitworth threads on its rocker adjustment
screws. Try finding a screw for them in the US!!! I ended up mail
ordering the correct nuts.

	Vance	

-----Original Message-----
From: mgs-bounces at autox.team.net [mailto:mgs-bounces at autox.team.net] On
Behalf Of Clayton Kirkwood
Sent: Thursday, October 07, 2010 12:05 PM
To: MG-MGB at yahoogroups.com; 'MG List'
Subject: [Mgs] rocker threads causing problems


Hi,

 

I am putting my rocker assembly back on my head after putting new valve
stem
oil seals in in an attempt to see where my oil consumption is coming
from.
While tightening the nuts down on the studs, I continue to have a
problem
with the threads of the nuts ripping out. I went to the local parts
store
and asked for grade 5 nuts hoping that the problem was with the nuts
being
ungraded. I continue to have the same problem: I tighten the nuts down
to
25lbft but they never tighten and I remove the nuts and then have to
remove
metal twists from around the studs. 25 lbft is the value listed in the
manual.

<snip>

TIA,

Clayton