In a message dated 16/01/01 9:48:04 AM Pacific Standard Time,
owner-mgs-digest@autox.team.net writes:
> May I ask on what experience you base that statement, Jim? And the following
> two questions would also seem important - How many times can used head studs
> be re-used safely, and how, by looking at an engine that you've just taken
> apart for the first time, can you determine how many times the studs there
> have already been re-torqued?
> Lawrie
>
I agree with Lawrie.
There was one type of stud that usually had a little '22' on the top that was
absolute crap - it wouldn't take regular torque half the time, and would
break if you went one pound over (or sometimes under!).
The later ones, supplied as replacements for MGBs, usually had a little
dimple in the end (where they centred them for machining) and they were much
better, but still stretched a bit, and had a limited useful life - I would
replace them every two seasons on my race cars.
The best solution seems to be ARP studs that have, if not an unlimited
service life, at least a very long one. Probably overkill for street MGs.
I don't have the same problem in the car I run the Twincam in, as they use a
larger diameter stud, which I have specially machined.
Bill S.
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