Turboman
Mab An Gov
OMG! Don't say that, there have been huge debates before!
Some love em, some hate em, never had a problem with em myself!
ronsealdeath
Sagging Member
Just fit polybushes, easier to replace. Fit dry unless the packaging tells you to. The metal bushes will last longer probably but swopping a polybush is a dream compared, so easy for diy mechanic to go poly
auf_wiedersehen_pet
Well-Known Member
Plenty of grease inside the metal sleeve though - I've had a couple of bolts/sleeves sieze on the fronts and had to use a slitting disc to cut the bolt/sleeve in situ without grinding the bracket or radius arm.
Turboman
Mab An Gov
I always grease during fitting, no reason why not, grease and oil don't attack polyurethane.
ronsealdeath
Sagging Member
Yes sorry grease the bolt going through the bush with copper slip but urethane bushes themselves arent necessarily to be greased into their recess. What can happen is the bush itself starts to rotate in its recess and this wears after the grease deteriorates. They start squeaking and will not perform as they should due to the wear. The bush should sit tight in the part it fits into, the flex of the bush comes from the material itself not any rotation of the whole bush. So I would msintain only using grease if its provided in the bush packaging or as directed to by instructions
Turboman
Mab An Gov
I am sure there is a theoretical risk of that, and I agree the bush should not move in the arm. But I haven't actually had an issue with it on the ones I have fitted.
What I do think is important, whether fitting poly or metalastic bushes, is to let the vehicle down on the ground and bounce it up and down to settle the suspension before doing up the bolts.
