Standard, polyurethane or powerflex bushes

[S6 Devil]

I'm just about to have my wishbones rebushed. Does anyone have experience of changing to either a polyurethane or powerflex option? The Powerflex are a little pricey but the polyurethane option seem reasonably priced.

[blitzracing]

Ive fitted Poly bushes in place of rubber ones on the Ginetta- Generally they work in a significantly different way to rubber bushes. The Rubber bush flexes in the rubber itself, so the inner metal tube and outer collar are bonded to the rubber, so the wishbones are effectively spring loaded by the rubber as you move from the resting position. With a poly bush, the inner collar is lubricated so it pivots around inside the polyurethane- so you need to apply a suitable grease on assembly, but as you are no longer dealing with outer metal tubes, just the bush so fitting them is pretty easy- Im not sure if the TVR bushes are the same however. You can get them in different grades so you can go for hard ones for precise suspension control, or slightly softer for normal road use- typically blue bushes are the softer ones, and red the hard race ones. Dont be mistaken in thinking "race" is good as for road use, it may prove too hard, and ruin the ride.

[zed4]

TVR Powerflex bushes are only available in the black harder material due to their size/construction. I’ve just fitted them. Quite an involving job! Lots of work, but worth it. Car feels great, nice and tight and no rattles or knocks whatsoever. I went for Powerflex. Easy to fit, either push in by hand or went in easily in the vice, but the old ones are really hard to remove.

[Twistygit]

Was it also easy to get the wishbones back into the brackets?
Also read a thread that the bush can work it's way out and over the sleeve that's welded into the outrigger,

[zed4]

Twistygit said:

Was it also easy to get the wishbones back into the brackets?
Also read a thread that the bush can work it's way out and over the sleeve that's welded into the outrigger,

Yes, very easy to get the new bushes in. Pushed them in half way by hand and then pressed them in gently in the vice.

The bushes which sit up against the welded part of the chassis have a special metal washer integrated to the metal cylindrical sleeve inside the bush to prevent this. (well, my Powerflex ones did anyway).

These ones: http://www.ebay.co.uk/itm/TVR-CHIMAERA-PF79-102SBL...

Normally the metal sleeve is just a sleeve, but on these ones they have a metal washer built in on one end.

[gacksen]

getting new ones in is quite easy but getting the old one out can be a pita did
the complete rear on the chim with powerflex black and wont regret it. inspected them
3K miles after they went in and no probs so far.

[S6 Devil]

Still undecided. Many on the Chimaera forum say stick to standard. Richard at RT racing went very quiet when I stated thatI was going to fit polybush. He explained how it all worked and advised poly on the diff but standard bushes on the rest.

[S6 Devil]

This is the bush kit from TVR Parts. Not as pricey as Powerflex but I'm not sure how hard they will make the ride. Anyone fitted these? http://tvr-parts.com/tvr-parts/part-details/tvr-ki...