The hole positions are the same for the front shocks, Girling or Armstrong.
The rear hole positions are different.
The later front wings have a hump in them, to accommodate the taller Armstrong
shocks.
Yes, retapping the threaded holes to US or metric will weaken the threads.
John Seim
Irvine, CA
On Jan 22, 2013, at 8:19 AM, fogbro1@comcast.net wrote:
> Weren't the wing stampings changed to accommodate the Armstrong shocks? I
seem to recall that the Armstrong shocks won't clear the early wings. But my
memory's failed me before.
>
> And, by the way, retapping the mounting holes to US or metric threads would
certainly weaken the structure.
>
> Ed Woods
>
> From: "John Seim" <kingseim@earthlink.net>
> To: "gunnellj tds.net" <gunnellj@tds.net>
> Cc: mg-t@autox.team.net
> Sent: Tuesday, January 22, 2013 11:04:05 AM
> Subject: Re: [Mg-t] Front Shock Bolts
>
> The bolts are 3/8"-20 BSF.
> The ones for the Armstrongs are shorter than those used for Girlings,
> as Girlings had a thicked mounting base. You will need one longer one,
> for the engine steady bracket. There is a round spacer, that goes on top
> of the shock base for the Armstrongs, between the damper and the bracket.
>
> Actually, either design is OK. Girlings have a cast iron body, and do not
> wear.
> Armstrongs, with either pot metal or aluminum bodies, tend to wear a
little.
> That only matters when you rebuild them.
>
> Moss Motors sells 3/8" BSF bolts. I believe that they were 1 1/4" long for
> Armstrong,
> with the exception of the one with the bracket. That I believe was 1 3/4"
> long.
>
> John Seim
> Irvine, CA
>
> On Jan 22, 2013, at 7:52 AM, gunnellj tds.net wrote:
>
> > We have both Griling and Armstrong shocks that Worlwide has rebuilt and
are
> > wanting to put one pair on the 1950 MG TD "hot rod" we are doing. The car
> > will have a Ford V8-60 flathead engine.
> > Question 1 - Is either design better for this application? The Armstrongs
> > "look" better as the filer caps match the back shocks. But that doesn't
> > mean they work better.
> > Question 2 - It seems that Moss no longer stocks the bolts to hold the
> > Armstrong shocks to the frame and we have lost track of our bolts. In a
> > quick test it almost seems like either 10 mm fine bolts or 3/8-in. fine
> > bolts will thread far enough into the holes, but the test bolts are old
and
> > cruddy and we can't be sure.
> > Does either of these sizes work or do we have to find a source of
Whitworth
> > fasteners?
> > If we used the 10 mm or 3/8-in. fine should we re-tap the holes to
whatever
> > size?
> > Thanks for any help.
> >
> >
> > --
> >
> > "Gunner"
> >
> > John Gunnell
> > PO Box 87
> > Iola, WI 54945
> > Ph: 715-445-4262
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> >
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> >
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> >
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> >
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> >
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> >
> > Take A Slide Show Tour of the Shop at www.gunnersgreatgarage.com
> >
> > Check my blog Gunner's Garage at www.oldcarsweekly.com
> >
> >
> >
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