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My '65 with a '74 frame just had the frame mount for the snubber let go. There's a big hole there now. Is this common? Which way does the torque go? It seems to me with axle wrap up it should push up but this looks like it has tried to pull through from the bottom. Is this what locates the diff housing? When I replaced my diff it seemed at the time it wanted to be further ahead and the way my hole is damaged it looks like it has been trying. What thickness of material should I use to repair, 3/16?
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Re: C2 C3 snubber mount
Under acceleration, it would push up. But on deceleration, it would pull down. There is a fairly big hole normally for the bushing to fit into. -
Re: C2 C3 snubber mount
I believe you are correct, it will torque "up" at take off.
With my body off and frame stripped, I examined my frame and found the top welds of the diff nose mount cracked! So I presumed that braking action would force the diff down with the opposite torque.
Just a guess...Comment
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Re: C2 C3 snubber mount
Most brake torque is transmitted to the frame via the trailing arms. Little goes through the drivetrain because it offers little resistance.
Banging shifts is probably what damages the frame's front diff. mount.
DukeComment
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Re: C2 C3 snubber mount
That makes sense, and it's good to know as I believe there is strong evidence that this car was raced hard in the past.
MikeComment
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Re: C2 C3 snubber mount
Banging shifts would still torque it upwards. In some cars with traction bars or differential nose snubbers, you could feel them hit the floor/chassis when someone banged a shift if they hit it hard enough and were sloppy between gears.
DOWNSHIFTING under load (engine braking) or coasting in gear (engine braking) would torque it down. Lots of people used to like the sound of pipes cackling while coasting downhill or downshifting to a stop without braking.
Brake braking is transmitted through the trailing arms as you said.Comment
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