Rubber or urethane trailing arm bushings?

[blackcloud45]

Awesome! Thanks for the detailed instructions (now I see the links up top... like I said I'm dumb). I can tell you that chiseling w/ an air chisel does not work

[gofastnut]

Yeah, the burn em out method stinks! Literally! I'm going to have to try the drill and pry method.
Thanks for the information on the pros and cons of rubber and poly, I'm going with poly, though.

[markeb01]

Originally Posted by CRGRS 66

Well you two... Mark, you installed the OEM style, oldblue. you installed the urethane, pro's cons two years later? Are you happy with the poly bushings old blue?

I need to place an order for a variety of bits and pieces for frame/suspension re-assembly, currently torn on this one.

I went with a pair of NOS rubber bushings, but some medical set backs delayed installation and they are still hanging on the garage wall.

[CRGRS 66]

I drilled out my old bushings on the weekend... 5 minutes tops! I am going to be ordering urethane bushings.

[Mackie]

Originally Posted by Lugnutz65

I'd bet a dollar the inner sleeve rotates on the bolt. When I think about how tightly the original rubber bushings were holding onto the original inner and outer sleeve, I have to believe that they only provided the limits of the control arm movement. As far as the tracking arm, well I'm not sure about that issue, but I think it's probably the same situation.

Thanks Lugz,
I'm sure you're right, in which case any sqeaking would come from the ends of the urethane bushing rubbing on the insides of the bracket.
It's just that I've seen some where the sleeve is longer than the width of the bar end so that it gets pinched stationary in the bracket when the bolt is torqued. In those the bushing rotates around the sleeve.
By "track arm" I meant the parts you're working on not panhard rod or bar, often called a track bar.
Thanks also for taking the time to post that blog.

[Matty Wagz]

I just ordered the Poly bushings... thanks for the tip to take the old ones out. Will update on the wear and noise...

Wagz

[theastronaut]

Originally Posted by astrochimp

The arms actuality twist to make our rear suspension work.
IMHO the polly would limit articulation and put more stress on other parts.

David

X2! Adding heim-type joints would eliminate any bushing deflection while allowing the arms to smoothly rotate through the suspension travel without binding.

Here's a great thread on making your own tubular arms with adjustable heim joints.

http://67-72chevytrucks.com/vboard/s...d.php?t=321100

[blackcloud45]

Thanks again Lugnutz! Just did mine... took about 10 mins and I didn't even break a sweat! Awesome! BTW, I did my panhard bar too. Worked just as good there

[Lugnutz65]

Glad to know it worked as well for you as it did me. I have gotten great help from the forums, so it's good to know I can occasionally give back.

[Rocky P]

Used this thread lugnutz65, all worked out perfectly. Used poly and wow what a difference

[LostMy65]

More opinions?
Rubber or Poly?
Brand and/or part numbers?

[LVPhotos]

Originally Posted by LostMy65

More opinions?
Rubber or Poly?
Brand and/or part numbers?

Oh if money was no prob... the rebuildable links. I like the spherical links. When in doubt look at a trophy truck doin 120 in desert. Then poly... poly break under severe punishment

[dondb]

I know this is a bit old...but wanted to add to it for future poly inserts. I see some had a bit of a problem with the small poly piece going in properly. If you heat up the small piece and use a c clamp as picture shows it does go on with out any modifications. If it is not pressed on you get a total of 3 inches across and the arm it fits in is 2 3/4 inches. After it is pressed on I got the 2 3/4 to slide right in.

[Johns 66]

Is this the same for body mounts as far as squeaking? I have the poly mounts for the cab and was fixing to install them until I read this...any suggestions would be greatly appreciated...didn't mean to thread jack

[dondb]

The body mount bushings are not articulating like the a arms and trailing arms. So you should be fine from squeaks. The only thing i have heard about the poly body mount bushings are that they don't compress like the rubber so sometimes there are things that don't quite line up after?

[Johns 66]

Originally Posted by dondb

The body mount bushings are not articulating like the a arms and trailing arms. So you should be fine from squeaks. The only thing i have heard about the poly body mount bushings are that they don't compress like the rubber so sometimes there are things that don't quite line up after?

Great...I appreciate the information...My plan is to change the body mounts before doing any body work,,,I will also change the radiator core support mounts as well in hopes that it will all line up when done.