Vibration and Engine mounts

[meadowbrook]

Hi all. 

I have twice attempted to replace the original oil soaked and squashed rear transmission/engine mounts, and in both cases it profoundly increased the levels of vibration making its way inside the vehicle. 

The first mount was clearly smaller than the originals and lacked the internal holes the original has, presumably to 'soften' it. 

Then I found a set that had those holes and installed them but the effect was the same. Both new mounts are obviously harder rubber than the original but since the originals were over 60 years old and oilsoaked, I figured that's normal. 

Does anyone know of a source for new reAr  mounts that they have used and did not see citation increase once installed?

[knuckleharley]

I have no idea if this will be helpful or not,but if it were me,I'd check with my local NAPA store and see if they can order them. NAPA is the best place I know of to buy either NOS or equivalent new parts. They won't always have immediate access to the old parts catalogs in this modern age of computers,but my local NAPA has a guy that has been working there for 40+ years,and he doesn't mind digging out the old catalogs from under the counter and looking.

They don't always have or can get what I need,but they do fairly often,and it costs you nothing to ask.

My suggestion is to walk up to the parts counter in person,approach the oldest person working,and ask him or her directly. That works a lot better than impersonal phone calls to someone that doesn't know you.

[dpollo]

I noticed this problem back in the 60s when these items were easily obtainable new.   There is a difference between the mounts which were found in Fluid drive cars and those in the Plymouth although they will interchange.  All the replacement mounts, even the DPCD ones seem harder.  One thing to check is that the through bolt is not compressing the mount.  The mount both upper and lower should not be compressed.

A spacer which makes the tube longer may be a solution.  It can sometimes be very difficult to remove these mounts with the engine  in the car.

Not all cars had a doughnut on the bottom, some had only a rubber washer.  The driver's side is the most important as the engine tends to lift on acceleration.

[Flatie46]

Excellent info in the posts above. I bought a complete set a few months back, I've already installed them but have not run the car yet. I got mine from  ebay. They seemed to fit well. My car had the doughnut on the bottom side and I've noticed a lot of vendors don't offer them.  I had to Rob the spacer tube from my parts car as it was rusted. It would almost seem to me that it would be smoother sitting on the doughnut than the flat washer.