Poly bushes

How difficult is it to change all standard bushes to poly bushes? I've got 2 worn ones on my rear suspension arms, so rather than replace the arms and get standard bushes again, I'm thinking I may look at "poly-bushing" the entire car...

Cheers

Dave

Major retrograde step, and without a lathe to make mandrels to push the old bushes out and the new ones in it will be a PITA with the risk of damage. The science that went into the stock bushes and uniballs is not trivial, they are complex and clever things. If Toyota thought some plain polyurethane bushes were as good or better they sure as hell would have used them. Suspension bushes are one of the hardest worked parts of a car, and even over the last 15 / 20 years technology has come on apace. Buy new arms!

EDIT : There are very specialised cases that favour different or uniball bushes, usually for racing or drag racing. You need to know exactly what you are doing though, it's remarkably easy to lock up suspension movement and cause huge stresses, damage or breakage if done incorrectly. When polyurethane bushes first came out one application was rear axle mounting rods for Chevettes and the Opel Kadett equivalent, popular for rallying, racing and general modifying. The stock bush was a voided bush to allow the rod to rotate in a controlled way when the axle articulated in roll. The poly ones resisted this, very strongly. The floor pans where the bodyshell end of the rods mounted saw huge loads and eventually cracked and failed.

I'm gonna move this to tech on the back of Chris's reply, so people searching in the future stand a better chance of being put straight

And that's why I love this forum Very helpful... I'll look at pricing etc for new suspension arms instead.

Thanks

Dave

And that's why I love this forum Very helpful... I'll look at pricing etc for new suspension arms instead.

 

Thanks

Dave

Make sure you're standing near a solid object when you get the price

Make sure you're standing near a solid object when you get the price

I'd recommend a seating position

I can give you an idea now for the rear arms if you want them as i

priced them up not so long ago.

Yeh dude I'm seated and waiting to be shocked...

Rear upper suspension arm £430 inc vat each

Lower suspension arm No 1 which has and eccentric adjuster to alter the toe £142 inc vat each

Lower suspension arm No 2 which has and eccentric adjuster to alter the camber £227 inc vat each

Those are retail prices and you should be able to get decent discount off them depending who you use

I can get the rear upper arm for under £350 inc vat

Theres also a strut rod but i've not got a price on that.

Rear upper suspension arm £430 inc vat each

Lower suspension arm No 1 which has and eccentric adjuster to alter the toe £142 inc vat each

Lower suspension arm No 2 which has and eccentric adjuster to alter the camber £227 inc vat each

 

Those are retail prices and you should be able to get decent discount off them depending who you use

I can get the rear upper arm for under £350 inc vat

 

Theres also a strut rod but i've not got a price on that.

pollybushes all the way lol

£430!?? Glad I was seated

Told you

£430!?? Glad I was seated

Thats full retail and as i said you should be able to get it a chunk cheaper.

Really interesting read. I'm thinking this "suspension lockup" can explain some of the unexplained incidents when people spin off without warning. Scary stuff.

Certainly poly bushing all the rear suspension on a MKIV *MIGHT* add stresses over and above what the normal kinematics would impart, some links need and expect none linear 3 dimensional bush compliance. I doubt it would we expalin trips into the scenery though, that's usually HRF syndrome

I'm guessing you mean the Right Foot here. Well, those are not the ones that scare me. That's up to the driver not to do that. I've just heard several accounts on the supra loosing the rear out of a round about without any real throttle or wet road. It's those that scare me. I usually just file them under the "buf-of-cause-you-didn't-do-anything-wrong-while-crossing-my-fingers" category. Your post above just made me think and *definatly* off the thoughts of changing to poly bushes (which probably weren't going to happen anyway as I can't find anyone that I trust that would do the apparently horrible job)

I think someone mentioned befreo that bluepoint are now replacement arms for the supra through motor factors, is this true? might call mine when i get back and see as I've used their arms on some of my other cars and they were identical.

You mean Blue Print parts ?

http://www.blueprint-adl.com/index.asp

You mean Blue Print parts ?

 

http://www.blueprint-adl.com/index.asp

ahh yes:-) Although i wouldn't mind more blue-point parts if i had the money! Are they as good as OE parts? I believe they buy the rights to make them direct from the manufacturer or something along those lines.

I've never used their parts but they list a 3 year warranty on all parts which you don't get

off Toyota !!

You need to find a Blue Print parts outlet or you need to be a wholesale outlet or garage

to buy direct from them

I've never used their parts but they list a 3 year warranty on all parts which you don't get

off Toyota !!

 

You need to find a Blue Print parts outlet or you need to be a wholesale outlet or garage

to buy direct from them

My local motor factors supplies blue print parts. I used them for arms for my prelude and they were pretty good, just wanted to know if they were comparable to replacing with toyota parts.

ADL don't list any wishbones for the Supra. Some ADL stuff is dearer than OE, so you need to be wary!

ADL don't list any wishbones for the Supra. Some ADL stuff is dearer than OE, so you need to be wary!

thats that then! I've had my S4 v8 for a month now and it has just shown how much slop there was in the supra, guess toyota is probably still the only option for suspension arms.

You can buy pattern front upper arms cheaper than stock. Rock Auto in the USA sells the at around £50 if i remember correctly.

They seem to be the only ones. Everything else is main sealer only.

Sorry to bring this back to life, but has anyone actually tried to control arms from rockauto.com? They're supposedly pattern parts including bushings and ball joint at a 3rd of the cost. A wild guess would say that the Toyota items are the price they are for a reason, but then there's the feeling that OEM parts are just massively overpriced. Anyone shed any light on this?

There is two side to the story, Steve that has a Whifbitz time attack Supra says his car was transformed from having the polybushes fitted..! Been racing for 2 years also without any problems..!