Motor Mounts (bomb proof)

[XJRob]

I have had it with my OEM type replacements from the local parts place and looking at getting Rusty's urethane mounts. I read the article on Jeepin.com which gave good reviews, just looking for other opinions on these.

The OEM style ones I have now have a "lifetime warranty" but I don't forsee replacement of these every 2-3 years; looking for something with a little longivity to it.

How bad are the vibes?

 

[Fergie]

Vibes are noticeable....you'll figure out what is loose real quick.

I have the MORE rubber versions, and even those are fairly noisy.

I got mine because I had a new rad and didnt want the engine moving into it, so I'll stick with them.

Fergie

 

[xj-grin]

I had the Rusty's poly mounts on my old 91 -- some vibes but I didn't think they were that bad. When I need to replace the mounts on my 99, however, I think I will go with the MORE rubber units as I have heard nothing but good about them.

 

[Dirk Pitt]

www.rawbrown.com has a nice looking motor mount. I believe the bushing is a LCA bushing also, making bushing replacements plentiful if you ever need to.

 

[jeep1947]

I forget which brand poly-urethane mounts I have, but the shake the whole jeep. Not that bad, just noticable. It now looks from the outside like I have a mild cam as at idle there is a slight shaking. Get any brand urethane, they are worth the money.

 

[hoytinak]

I got the MORE's after replacing the factory ones twice. Had them for a 1 1/2 yrs. now. They're nice and sturdy. It took me a week or so to get used to the vibes though.

 

[triple 4]

If you realy want some bomb proof motor mounts here are some that I fabed up, we put them on our 4.0 MJ tuff truck, they have held up great! Even after running through a tuff truck compatition. With first place.
The pictures are at: photos.yahoo.com/triple4x4 its in the album named France crap to aw4. The second and third picture. Let me know what you think.

 

[xtremewlr]

You guys are crazy if you think the vibes from the poly motor mounts are that bad. I run a set of Rustys Polys in my XJ and the vibes are barely noticable. I've felt worse from dying U-joints!

 

[Karl]

I have the MORE and they run fine with no vibes.

 

[jeep1947]

Well it depends on what brand you have as to how stiff the urethane is. also I would think with a softer suspension you would feel the vibes more because they would rock the truck more, like on my tj with a skyjacker soft ride with poly mounts. Also it depends on how sensitive you are to change or how observant, my vibes are not bad by any means but I can tell a difference.

 

[junkjeep]

I used the Prothane mounts when I dropped the stroker in and they do transfer vibrations back though the unibody at idle. It seems to smooth out once the rpm's increase. I don't notice any thing while driving.

 

[woody]

I replaced with MORE Bombproof Rubber (torsion style) These use a common rear leaf bushing IIRC.

When new, they vibe a bit more than the stock (weak) rubber mounts, but after a few months they either have broken in - or maybe I've gotten used to it.

 

[wescam]

Newbie Alert!

How are you guys breaking motor mounts? Just hard wheeling? Bashing around? Or is it a "weak point" I don't know about.

Thanks.

 

[XJ_ranger]

www.rawbrown.com has a nice looking motor mount. I believe the bushing is a LCA bushing also, making bushing replacements plentiful if you ever need to.

X2 - call this guy

 

[FrankNBrew]

I had the MORE rubber mounts in my XJ for 5 minutes. At idle the vibes were unbearable. I would suggest using factory mounts, and replace the trans mount at the same time. A bad trans mount will wipe out engine mounts much quicker.

 

[Captain Ron]

www.rawbrown.com has a nice looking motor mount. I believe the bushing is a LCA bushing also, making bushing replacements plentiful if you ever need to.

Looking at the "phase 2" mounts...

The bushing is a custom extrusion, a bit softer durometer rubber, very plush, and much better than stock rubber retention and support, but it's not a LCA bushing. It still looks like bushing replacement is possible if nessesary.

--ron

 

[LouisianaZJ]

I had the MORE rubber mounts in my XJ for 5 minutes. At idle the vibes were unbearable. I would suggest using factory mounts, and replace the trans mount at the same time. A bad trans mount will wipe out engine mounts much quicker.

after they break in (a week or two) those vibes go away 80%.

I have the bombproof, at first they had crazy vibes, but they are ok now.

 

[jeep1947]

Newbie Alert!

How are you guys breaking motor mounts? Just hard wheeling? Bashing around? Or is it a "weak point" I don't know about.

Thanks.

It is one of the many weak points in jeeps. Along with the cracking header/ manifold and many others, bad motor mounts will spell the end for the already weak exaust manifold.

 

[Weasel]

I got the Rawbrowns ones and they are fine, except I had to really cut the bushing on the drivers side to fit my 89.

 

[hoytinak]

Newbie Alert!

How are you guys breaking motor mounts? Just hard wheeling? Bashing around? Or is it a "weak point" I don't know about.

Thanks.

It's VERY common on xj's. I've seen it on many XJ's.