Firewall Flex Issue

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vice will do it
The pipe is had must have had to thick side wall.
I know my Challenger had a factory brake-booster and braket behind it. I did not look at the 1973 Dart I have. I will have to look-see if it has a braket behind the booster too.
 

The pipe is had must have had to thick side wall.
I know my Challenger had a factory brake-booster and braket behind it. I did not look at the 1973 Dart I have. I will have to look-see if it has a braket behind the booster too.
yeah for a brace like that you can use super thin pipe.. And on mine and another guys 62 i know the mc moves way more than i am happy with, been buggin me
 
AJ/FormS, I had to read your post a couple times to have it sink in. Brilliant idea. I have the 10" B&B style clutch installed with scalloped pressure plate. It has the special 5/16" -18 bolts from Brewers.


So, as I see it the washer OD could not exceed the diameter of the special bolt, or there would be clutch disc interference. They'd be installed under the pressure plate flange and the special bolt goes through it. I've got some 5/16" small diameter washers here about .050" thick. How thick were your washers?
They are still in there like two decades later. IIRC they were 1/16" nominal so, about 062 inch. My first choice was just a guess, but it was perfect.
 
What did you use to compress the pipe so neatly
I have a big vice, one of those tools you buy that pays for itself a hundred times over. Also a protractor, and a metal chop saw. The chop saw cuts the ends nice and square, I just clean off the burrs with a file and wire wheel. I measured the angle from the firewall to the mount point and held the conduit in the vice at the angle measured and crushed it. Then marked and drilled the holes on the drill press, and used the vice to adjust the foot angles on the mounts to dial them in. I did form the foot (curved it) a bit to fit the contour of the tower. I painted it with VHT satin black epoxy and put a thin rubber washer under the foot to protect the body finish a bit when torqueing down.

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I used this same method making the "impossible to find" exhaust manifold supports a while back.

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I have a big vice, one of those tools you buy that pays for itself a hundred times over. Also a protractor, and a metal chop saw. The chop saw cuts the ends nice and square, I just clean off the burrs with a file and wire wheel. I measured the angle from the firewall to the mount point and held the conduit in the vice at the angle measured and crushed it. Then marked and drilled the holes on the drill press, and used the vice to adjust the foot angles on the mounts to dial them in. I did form the foot (curved it) a bit to fit the contour of the tower. I painted it with VHT satin black epoxy and put a thin rubber washer under the foot to protect the body finish a bit when torqueing down.

View attachment 1716469046
View attachment 1716469042View attachment 1716469045


View attachment 1716469047

I used this same method making the "impossible to find" exhaust manifold supports a while back.

View attachment 1716469055

Yeah, my vice honestly is probably the single tool i would save in my garage... it's 50+ years old.. it's huge and i abuse it and i do stuff with i couldn't without it.
 
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