CMAHON

just picked up a new (to me) hp 30 front for my 01 w/ 6in longarm. i am replacing front upper control arm bushings (axle side).I would like to get Ya'lls preference and reason on which one you would use.

cherokeeaddiction23

ive heard that you get more flex from the rubber oem ones, the poly ones are really stiff

Gee oh Dee

Poly will last longer.

Diesel

If maintained, white lithium grease annually or expect quick dry rot.

Gee oh Dee

I've never had dry rot issues with any poly mount I've ever used, but I've never used them on a Jeep before.

I used poly motor mounts in my 500whp Eclipse, had them for several years and never had any dry rot.

I spose it wasn't used on suspension components, but they sure held up well.

Even with launches from 5500rpm.

They could also be different compounds, which would make a difference.

Diesel

Compounds, possibly. RE had a problem with their bushings, now they treat them with a white lithium grease before sending them out.

Gee oh Dee

Yeah, not sure what company made them anymore. I know they are outta California, though, and aren't a big company.

IIRC they were either red or black. I wanna say red. Jeeze, they aren't even similar colors.

caged

poly are obviously better material, but they are a lot stiffer than rubber. therefor a much more harsh ride. noisier too.

Gee oh Dee

Two things that really shouldn't concern you being a Cherokee owner.

Diesel

Haha, agreed

caged

just sayin it as it is.
to me, i don't care. but to some, it means everything.

XJSETH

which to me is funny. if you need a great smooth ride. buy a newerish car not a jeep...of any kind

Gee oh Dee

Exactly. Its a Jeep. Not a Caddillac.

RENIXBEAST

I'm going with these. Ironman4x4 makes strong, quality products.
http://www.ironman4x4fab.com/Dana_30/Dana30_bpkit.html

sandaddik2

poly is stiff and squeaks. rubber will last a while and are dirt cheap. i vote rubber for arms and poly for motor mounts