Re: Crack of doom?

[Barrie Robinson <barrie@look.ca>]

I think that this does not happen on GT models ??



At 10:03 AM 12/2/2006, Paul Hunt wrote:
> There was a BMC (Canada) service bulletin dated *1963* (Rich 
> Chrysler posted me a copy) detailing a mod to cure it. Must have 
> been really severe to have it happen so early.  It was a great 
> improvement, but still happened although after a much longer 
> period.  My 73 had it when I restored it, and I studied it quite 
> carefully as I didn't want a reoccurrence.  I reckoned there was 
> still a weak point and welded in a flange.  Some years later I saw a 
> Heritage body with exactly that mod, although as part of the 
> original panels.  Whether this occurred before production of the MGB 
> ended, or only with the Heritage shells, I don't know.  There are a 
> number of aspects to be considered when trying to prevent it 
> happening again, but I believe the most important is to ensure there 
> is some clearance between the screen uprights and the side of the 
> 1/4-light frame to allow for some 'scuttle shake'. Without that 
> clearance all the scuttle shake (the MGB is pretty good in this 
> respect but there is some over some surfaces) is transferred into 
> the door skin at the window opening.
>
> More details at http://www.mgb-stuff.org.uk/wn bodyframe.htm
>
> PaulH.
>
> ----- Original Message -----
> > Is the 'Crack of Doom' common to all MGBs? Is my '79 susceptible, or was it
Regards
Barrie

Barrie Robinson
(705) 721-9060
http://www.britishv8.org/MG/BarrieRobinson.htm  
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