1951 B3B Rear motor mount

[dan01wilson]

I need help or advice on the best way to install the rubber biscuits in my motor mounts. I got my truck back from the shop with no rubber pads in the rear motor mounts whatsoever.  I got the pads from Roberts Motor Parts and fabricated the spacers from some 5/8" stainless tubing.  Can somebody help me with some advice or a YouTube video of how to approach this?  Thanks in advance.

[JBNeal]

For the rear mounts, jack up the transmission a hair to get the weight off of the mount brackets.  I think I was able to drop the bottom rubber, that gave access to the flywheel housing bolts for removal of that bracket.  The bolt going through the rubbers is kinda long so ya gotta finagle it and the bracket out from under the cab...some creative German phrases may be required coming and going, but I've replaced several pairs of replacement rubbers this way.  If the cab is removed, then them rubbers can be replaced faster than you can say Jack Robinson

[dan01wilson]

So I don't have to take the front motor mount loose?  It will flex enough?  Thanks for the response 

[JBNeal]

The front motor mount can be replaced by putting scrap 2x6 under the oilpan and lifting the engine enough for removal + replacement.  Replacing the rear mounts does not involve removing the front mount nor vice versa. 

 

Dodge Truck engineers designed a lot of parts to be replaced quickly to reduce downtime and to be worked on in a service station or the side of the road.

[dan01wilson]

OK.  Thanks a lot for your responses. 

[dan01wilson]

Passenger side bracket had been broken and welded.  Truck has been in my family since new and never wrecked, so puzzling in that regard.  Glad they arc welded it, since they brazed a lot of stuff back then, as I recall...

[Los_Control]

I'm sure there is a interesting story behind that somewhere.

 

All the old beaters I have seen it was the drivers side motor mount that broke & or was chained down to keep it from breaking.

 

Just saying that passenger side never broke from abuse of your 95hp engine.

There is a story there somewhere

 

Edited June 19, 2023 by Los_Control

[dan01wilson]

As you were.  Driver side is the same.  Obviously was how they fabricated them. 

[Los_Control]

You know I'm now going to have to inspect my 1950 motor mounts ..... 9:00 pm at night

 

[Los_Control]

I'm only suggesting that 1950 they were not fabricated ..... but yours were ...... OHHH if these old trucks could talk ...

 

 

 

 

[ggdad1951]

Pretty sure those are repais of some sort, that is not a stock fab'd part.  There is a story in there someone forgot or is choosing not to tell.

[Dodgeb4ya]

I also had to replace that same motor mount bracket because of serious cracking.

I've owned the truck since 1973 and it's never been wrecked or abused.

Those brackets are kinda wimpy for being "Job-Rated"?

Edited June 20, 2023 by Dodgeb4ya

[WPVT]

I'd like to add something here. The function of the tubular spacer is to prevent the bolt from compressing the cushion. The engine is supposed to sit on the cushion, held by its own weight. The bolt just keeps it from hopping off the mount. If you compress the cushion with the bolt, you've lost the vibration insulating properties of the design.