Motor mount rubber pads

JoeCB

JoeCB

Senior Member
Hello all, all stock and original rear motor mount rubber pads, as one can imagine are rock hard. Is the benefit to effort ratio worth the it to change the rubbers in a fully assembled car? ...31 coupe. I understand that it can be done but not an easy job.

Joe B
 
Well this can be easy or hard. If you have a method to spread the frame slightly and support the motor you should be able to change them easily. But if your not a fan of rolling on the floor and don't have a lift could be a little harder. I did mine without fenders or running boards so it was super simple.
 
I did a video explaining how to make a frame spreader out of hardware store materials, if you decide to go that way.
 
Well worth the effort to change them. Ford provided the pads to help isolate engine vibration. Even with the Float-a-Motor mounts, it is still worth doing the work. If you have to pull the engine for some reason, then that is a good time to replace the pads. Make sure you install the tubular spacers and use cotter keys on the nuts. Use new bolts and nuts.
 
The reproduction rubber pads are thicker than the original pads (made by Firestone), so it will be difficult to change them.
 
I changed my motor mount pads (installed in the early 70s) last year...original style mounts...noticed an immediate improvement with lower noise and vibration. I needed a frame spreader to get them in, but otherwise a straighforward install.

I saw an Model A hobby magazine article that recommended motor mount rubber replacement every 5 years...not sure they need to be replaced that often, but my 50 year old rubber mounts were quite hard and brittle...I'm sure originals would be even worse.

Don't expect total elimination of vibration, but certainly an improvement should be expected.
 
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