Engine mount

[Billygoat]

I’ve got my engine out and getting it looked at and I turned my attention to the other items while the engine gets worked on. I was hoping to replace the engine mount but what the heck, 125$ for a engine mount? Is there any alternatives?

Thanks,
Tom

 

[Bhart]

I have one for $50

 

[Bhart]

I’ve got my engine out and getting it looked at and I turned my attention to the other items while the engine gets worked on. I was hoping to replace the engine mount but what the heck, 125$ for a engine mount? Is there any alternatives?

Thanks,
Tom

Are you trying to replace it because it is 50 years old or has it cracked and deteriorated.

 

[Ken B]

I do not know where you priced it but Jim K had a bunch made a few years ago.

 

[Ken B]

I do not know where you priced it but Jim K had a bunch made a few years ago.

 

[LarryW]

After doing my first engine rebuild, I looked at the 30yr old mounts that while had suffered a life of some oil from the front main seal, it still looked to me like it would be alright.....till it wasn't. It was ok for two years. We left Wisconsin for the SW and got about 150 mi into the trip when every time I stepped on the gas, torque twist of the engine had the fan hitting the fan shroud. That made quite the racket!. So, do I turn around and go home or try something else. So after watching what the engine was doing, I stopped at a NAPA store and bought a package of ratchet straps and strapped it down within an inch of it's life. Two straps around the mount itself and others left to right. Drove almost 7K miles over 3 months and with an occasional tightening of the straps, the fan never hit the shroud again. Not suggesting you should carry a set of ratchet straps, only that you should not take a chance with your existing or a used mount. When we got home I pulled the mount and sent it to Steele Rubber products. You will only need to send the single front mount so will not be as pricy as doing a pair. It has been 18yrs now and looks like it will outlast me. JWID

 

[Billygoat]

We have a large rubber supplier in town, I’ll give them a call, but will keep Steel in mind. The condition of the rubber is unknown because it was gunked up from I imagine the front seal leaking.

Thanks all,
TG

 

[tmsnyder]

After doing my first engine rebuild, I looked at the 30yr old mounts that while had suffered a life of some oil from the front main seal, it still looked to me like it would be alright.....till it wasn't. It was ok for two years. We left Wisconsin for the SW and got about 150 mi into the trip when every time I stepped on the gas, torque twist of the engine had the fan hitting the fan shroud. That made quite the racket!. So, do I turn around and go home or try something else. So after watching what the engine was doing, I stopped at a NAPA store and bought a package of ratchet straps and strapped it down within an inch of it's life. Two straps around the mount itself and others left to right. Drove almost 7K miles over 3 months and with an occasional tightening of the straps, the fan never hit the shroud again. Not suggesting you should carry a set of ratchet straps, only that you should not take a chance with your existing or a used mount. When we got home I pulled the mount and sent it to Steele Rubber products. You will only need to send the single front mount so will not be as pricy as doing a pair. It has been 18yrs now and looks like it will outlast me. JWID

You must be an old farm-boy!

 

[LarryW]

You must be an old farm-boy!

NO, but sure wish I was. I do work on a farm during harvest season. I've gained so much respect for the farm life. So much that they have to keep in their head to make things balance. Did learn a lot of farm fixes. Stuff I would not have figured out any other way.

 

[pvfjr]

I haven't had to redo a GMC mount, but I've seen Smooth-On products used in the past when engine mounts were no longer available for a vintage car. It's not too hard to do, and I'll probably go that route if/when the time comes. I like to bead blast the steel parts to give them a good "tooth" for the 2-part urethanes to bond to. There are different shore hardnesses to choose from too.

Urethane Rubber

Polyurethane RTV mold rubber is economical, reproduces exceptional detail and is best suited for production casting of concrete, gypsum and wax.

www.smooth-on.com

 

[doggiecamp888]

Applied and Sirum sells brand new OEM engine mounts

 

[Richard RV]

I haven't had to redo a GMC mount, but I've seen Smooth-On products used in the past when engine mounts were no longer available for a vintage car. It's not too hard to do, and I'll probably go that route if/when the time comes. I like to bead blast the steel parts to give them a good "tooth" for the 2-part urethanes to bond to. There are different shore hardnesses to choose from too.

Urethane Rubber

Polyurethane RTV mold rubber is economical, reproduces exceptional detail and is best suited for production casting of concrete, gypsum and wax.

www.smooth-on.com

Thanks for the link. I have a replacement mount ready to go and I'd like to rebuild the one I'll be removing. What Shore durometer would you reckon the engine mount needs?

 

[pvfjr]

I'd probably start out with Reoflex 60A, but I'd probably research it for about 5 more days before ultimately coming to the same conclusion. I think 60A should be close to stock, but that's guesswork that should be supported by more searching and reading.