Problem solved. Thanks to those that responded. I was able to find a rear
engine plate here at the shop, from which I could measure and properly
drill a piece of shelving upright (angle iron with holes) to fit the 2
bottom trans to rear engine plate bolts. With that bolted in place on the
car, and with a jack under the exhaust pipe firmly locating the pipe to
manifold flange, I could bolt the hanger up tightly enough that there would
be no reliance whatsoever on the clamp to support the pipe. It works very
well, and quietly, enabling me to enjoy a long trip through the day and
night on Sunday.
The cause of the problem? Apparently 1 bolt had fallen out between
the trans and plate, allowing the former bracket to flex enough to fall apart.
All this not in time to chase the pheasants, though. Oh well. I
didn't do well in Cow Chip Bingo, either. (details on request)
Thanks
Peter C
====
At 05:29 PM 9/6/2002, Peter C. wrote:
>True, but the gasket gives a bit more smashing surface.
>BTW, no one has been able to give measurements. Jeff and Geoff have tried
>to help. Thanks guys. Jeff may be sending an extra, if he can find it. From
>that I'll have this thing sorted. Until then, some shelving upright will be
>sacrificed for the weekend.
>The NLA part is AHA5361 or later GEX7153 or Moss' 444-340. Trust me, this
>will be available.
> If y'all do not have your front pipe attached to the engine/tranny
>by more than just the manifold connection, you are doomed to that
>connection failing. The front pipe must move with the engine and is so
>supported at the tranny. Farther back, the system is hung from the body.
> Have a weekend, I'll be on my back in the grass for a few hours.
>Hopefully I can chase some phreaking pheasants.
> Peter C
>===
>At 05:36 PM 9/6/2002, Brad Fornal wrote:
> >FWIW, the 3 bolt flange unit will blow the pipe off as well, ask me how I
> >know.
> >Brad
> >
> >"Peter C." wrote:
> >
> > > GFT SPRT 1275 w/ribcase with 67-68 vintage exhaust (read with stupid
> > > effing clamp) soon to have 69 vintage exhaust manifold with 3 bolt
> > > flange... and a gasket!
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