Thanks Henry b I've read post that said the poly bushes were ok
Further to this I just replaced the radius arm bushes on a '91 RRC The poly bushes were an absolute pain to remove. It took a 25 ton press, a number of different sized mandrels, hacksaws, hole cutters and just about everything else i could find short of burning them out, to remove them from the radius arms. When we finally got them out, we found that they allow moisture to get between the bush and the arm so rather than pushing the old ones out and finding a nice clean shiny hole, the inside of the radius arms were rusted to hell. It took a rotary wire brush to clean the surface, a punch and hammer to knock the rust scale off the inside of the radius arm and emery cloth to clean them up before they were smooth enough to press the new bushes in.
So the moral of this is poly bushes should be put into the same category as coil spring conversions, don't even consider them, at least in my opinion..
Further to this I just replaced the radius arm bushes on a '91 RRC The poly bushes were an absolute pain to remove. It took a 25 ton press, a number of different sized mandrels, hacksaws, hole cutters and just about everything else i could find short of burning them out, to remove them from the radius arms. When I finally got them out, I found that they allow moisture to get between the bush and the arm so rather than pushing the old ones out and finding a nice clean shiny hole, the inside of the radius arms were rusted to hell. It took a rotary wire brush to clean the surface, a punch and hammer to knock the rust scale off the inside of the radius arm and emery cloth to clean them up before they were smooth enough to press the new bushes in.
So the moral of this is poly bushes should be put into the same category as coil spring conversions, don't even consider them, atleast in my opinion..
As I eluded too above - a 4t press may not be man enough.....20t+ is required depending on state of the current bush.