401 motor mount questions

Are the motor mounts for the 401's one part or two? I thought there was a frame side and a motor side with a rubber dealie in the middle. Right or wrong?

If there are in fact two sections, frame and motor, are the parts that bolt to the motor the same on all the vehicles? CJ 304, waggie 401, etc.?

Are the frame sides of the mounts different from the CJ to the Waggies?

I have motor mounts from an I6 from a CJ8. Will these bolt up to a 401? Parts of them,? I understand the drivers side is the same. Wrong?

Bottom line is I have a 401 in a waggie I want to put in a CJ8 frame. The scrambler orgionally had an I6 (I think) and I have those frame motor mounts. The 401 is currently in the waggie so I have the motor mounts there.

Can I use what I have or do I just need to order a complete set of motor mounts?

If I need to buy anything, any suggestions as to where to go?

 

Depends on your definition. There is a frame tower, an insulator, and an engine bracket. Most people call the insulator the "motor mount" becasue that's the replaceable part. It's one piece, until it isn't.

The FSJ and CJ have different brackets and towers. I believe the insulators are the same for all AMC V8s. There may be a difference by year.

Yes, everything is different except the insulators.

The book says everything is different. They look the same, and you may be able to get them to work, but they are different part numbers.

You may be able to make the Wagoneer towers work if you can cut and weld. Otherwise I think you will need to buy mounts. Looks like you will also need new engine brackets.

 

Thanks Tim. I figured out there were 3 parts, the part that bolts to the frame, the part that bolts to the motor and the rubber thingie. I assumed the parts that bolted to the motor were all the same for any jeep and the rubber thingie was the same as well. I figured the part that bolts to the frame was the same.

But if I understand you correctly, nothing is the same except the rubber thingies.

Arruggg! Is nothing easy? I guess when I pull the motor I look at all the parts and see what will work and what will not.

 

Yep, just the insulator (rubber thingy) is the same. The left CJ 6-cylinder frame tower might work, but the parts book calls it a different part.

I remember from a previous post here - someone wanted to use the Wagoneer engine brackets, but they don't fit the CJ and aren't usable.

The frame towers have to be different between the CJ and the Wagoneer, because the Wagoneer has a wider frame.

 

I feel your pain, but make it easy and get the M.O.R.E Bombproof motormounts and you won't have any more broken mounts..... especially with the 401.

http://i697.photobucket.com/albums/vv336/sroth66/IMG_3200.jpg

 

I just hate to pony up $250 bucks for motor mounts. That, in my opinion is a rediculous price for what they are.

But if that is the only solution, that is the only solution.......

 

I agree with you about the $$$$...... but when you have a great product and you know people will be satisfied because they wont have to change their motor mounts again and deal with the frustration you are having right now. Remember your stock motor mounts were not made to handle the torque of your 401.

 

I've got a set of frame horns. Yours for shipping.

 

A little cheaper here.


http://www.4wheelerssupply.com/catalog/product_info.php/products_id/1781

 

NOw that is a cool idea.

I was thinking before I mounted it all up I would test mount it and weld in some supports and gussets to try to reinforce the motor mounts.

I am keeping the motor fairly stock and I don't plan on romping on it too often. I drive like an old man going to church. So I think the stock motor mounts will be fine, especially with a little reinforcing.

But there are times........

 

When doing a 304 swap in in 75, I learned that the 6 cyl frame bracket had a different bolt hole spacing (to the frame) for the pre 75 as did the post 75....so I would think the V8 frame brackets for a pre 76 CJ-5/6 would be differnent as well when you tried to bolt them from one to another.

 

they also sell torque limiting straps which do the exact same thing as an oldschool chain rig. A bit safer if failure happens I guess, sort of a modified tow strap idea.