Rubber or PU Bushes...

[Joho]

Hi
I like to replace the bushes of my M-wishbones.
Now I'm not shure which kind of bushes I should use:
Rubber or Polyurethan?

And where do I buy it best?

Thanks
Joho

[THREEFISHORANGE]

I would personally use poly ones for longevity. But other people may not agree. Superflex do the range. HTH

[thegamekeeper]

Not convinced poly bushes last longer than rubber

[heightswitch]

Poly are more often more readily available and easier to fit. But being that most rubber / metalastic bushes removed from TVR suspension usually seem to be 25 plus years old, I am not convinced that poly last longer either.

I don't think their is much in it between Poly and rubber to be honest. Rubber often gives a nice ride in a road car, competition cars generally a different set of requirements. Poly is easier to fit incorrectly and therefore damage more quickly!!

N.

[Joho]

How to fit poly bushes incorrectly?
I thought those two part bushes are foolproof?

[whitewolf]

I and a mate fitted poly to his rover 220sdi. now the whole car vibrates on idle. also a few other people have advised against poly as they can make the ride much harsher. haven experienced this myself in my friends car Im thinkin twice. plus agreed the rubber bushes on my taimar all look in good condition except 4. Which have all moved out of position..

[GAjon]

I've used the rubber ones, the poly ones and now have, and had for some time, solid nylon bushes.
To be honest with a stiffly set M series, and mine is by no means set as stiffly as some cars I've ridden in, you'd be hard pushed to tell the difference between the ride quality with any option.

[Joho]

Thanks!
I think I still try the poly ones.
If the vibes throw me off road I'll tell you...
or not.

J.

[Comadis]

there are many polybush supliers on the market...and the quality varies a lot!!

have read this comment above:

"But being that most rubber / metalastic bushes removed from TVR suspension usually seem to be 25 plus years old, I am not convinced that poly last longer either."

agree!!!! the problem is that you wont find a similar quality nowadays at the "normal" supliers.

pro-polybush:you can choose inbetween certain hardness: race, road, comfort.

fitting: you surely can do lots wrong: use the wrong lubrification during fitting, dont recognize when the inner sleeves are too short (your car´s brackets may have widened or worn over the years or your suplier sent you the wrong length)

[daza]

I fitted poly bushes throughout my Griff 4.3

To my memory serving me correctly, I don't recall any harshness in the ride, but I believe there was more than one grade of material of poly bush available.

Darren

[Joho]

These are the only ones I found until now for the M:
http://www.superflex.co.uk/proddetail.php?prod=SF3...

Other ideas?

[thegamekeeper]

Rubber?

How many major manufacturers fit PU?

Edited by thegamekeeper on Friday 4th November 10:18

[Joho]

thegamekeeper said:

Rubber?

Edited by thegamekeeper on Friday 4th November 10:18

revolutionary!

[thegamekeeper]

Joho said:

thegamekeeper said:

Rubber?

Edited by thegamekeeper on Friday 4th November 10:18

revolutionary!

Thats what they said about the wheel, people said it would never catch on. Look where that has got us! Without the wheel we would never have had cars, no need for oil to run them. No conflict in the world. I could continue this further but I would probably be kicked off PH.

[Joho]

Hmm....what about wood?

[Slow M]

thegamekeeper said:

Joho said:

thegamekeeper said:

Rubber?

Edited by thegamekeeper on Friday 4th November 10:18

revolutionary!

Thats what they said about the wheel, people said it would never catch on. Look where that has got us! Without the wheel we would never have had cars, no need for oil to run them. No conflict in the world. I could continue this further but I would probably be kicked off PH.

Burn him! He's a wooden wheel ... I mean ... he's a witch.

[Slow M]

Joho said:

These are the only ones I found until now for the M:
http://www.superflex.co.uk/proddetail.php?prod=SF3...

Other ideas?

Johann,

I'll look up one manufacturer from the USA or Auz over the weekend. Having lost a Superflex bush, I ordered a couple from New Jersey (IIRC?). The greatest difference are that they're of a harder durometer, and that the sleeve is made of mild steel. Also, when I bought my Superflex ones, they were of one piece construction. I used a valve spring compressor to fit them to the wishbones, lubricated with the grease supplied. I noticed on your link, that the current ones are the top hat type.

I'll look up the part number for you as well.

There's a good discussion on lubrication of the Polyurethane bushes on Corner Carvers.

Best,
B.

WARNING: Bushes must not come into contact with alcohol-based solvents such as MEK, methanol, or methylated spirit.

[Slow M]

I used these, http://www.prothanesuspensionparts.com/proddetail.... but also found these others.

http://www.polybush.co.uk/shop/view/200_TR4A_5_and...

http://www.superpro.com.au/find-superpro-parts-for...

Best,
B.

[Joho]

Thanks a lot!
This will help.

Jo

[Slow M]

Two points to be aware of!

• Adrian Venn has posted here, on his preference for which bushings to replace w/ PU, and which ones to replace with the original rubber type. -I think it's more important @ the rear, as the toe-in causes a gradual tightening of the rear suspension, as it moves up or down.

• Also as per AV, there are two styles of bush available. Be sure to order the right kind for your car.

Best,
B.