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.

 

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

 

Poly will last longer.

 

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

 

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.

 

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

 

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.

 

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

 

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

 

Haha, agreed

 

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

 

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

 

Exactly. Its a Jeep. Not a Caddillac.

 

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

 

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