I'm thinking of doing some suspension work on my 98 XK8 and was wondering if anyone has ever used the Powerflex bushings. They don't seem to have a big presence in the US, at least not on Jag applications.

If anyone has tried them, let me know

Thanks

 

I have a full set in the front and like them very much. It tightened up the feel of the suspension but didn't make it too harsh. When it comes time, I plan to put a full set of poly bushings in the rear as well.

The only down side is that they can groan a little when cold. Some seem to have more trouble with this than others but my case doesn't seem to be too bad, although I am in Arizona where "cold" isn't all that cold.

 

So are you running their purple street variety?

 

Yes, I've got the purple ones.

I believe that there is at least one forum member that has used their black series, but I can't say how they compare.

 

I have them in my XKR (I think black series, but I don't remember). I do not like them, they moan and groan over any humps, bumps, dips...Not very compliant. They did, however, take away some of the giggling of the front end on my convertible.

 

I have the purple ones in my car both front & rear. I get no groaning at all. They give the car a much better feel. I would recommend them to anyone.

 

Maybe the difference in the groaning is a function of the black series? Or maybe it is how the bushings are greased?

All of mine have what looks like a bucket of grease on them and the indi I take the car to for service always touches it up at 5k intervals.

Tberg, are your groaning bushing greased liberally?

 

Anyone using these bushings in a 4 seasons climate? I drive my car year round but I only average 3,000-4,000 miles per year. My coupe is tight but making the handling tighter would be great IF it did not result in squeaks.

I suspect the bigger anti-roll bar from UltraRacing (about $250) is a safer upgrade for year round use...

Anyone with a coupe and in 4 seasons climate have any experience?

 

I have a cabin at around 7000ft here is AZ and the car sees 20-30F regularly. It doesn't live there, but gets to experience those temps a few times a month on over night stays.

I don't have any groaning another than very slow over speed bumps and the like, which is why I wonder if it is a function of either the grease job or the black series of bushings.

 

I have fitted powerflex many times on both my own and customer cars, never had any groaning and would recommend them.

I have also seen other makes of poly bush and they are very much inferior to the powerflex, I admit being a dealer might make me biased but if I came across something that was better I would say so...... Just for gods sake don't get the Britpart poly bushes !!

 

A while back Goldlion said he only used bushings in certain areas:


" I am running PowerFlex poly bushings on the Front upper control arm, rear sway bar and rear sub frame, all the other bushings are stock Jagua
Anyone find that certain combinations are better than others?
XKRacer, you advise doing bushings before the bigger anti-roll bar from UltraRacing?

I'm wondering where to start...



Goldlion says of his 2005 XKR " I am running PowerFlex poly bushings on the Front upper control arm, rear sway bar and rear sub frame, all the other bushings are stock Jaguar

 

Our XJR front end was rebuilt this summer and the purple poly bushings were used. Have not nor have I ever had any noise from them or any other poly bush I've used. You can expect a bit more road vibrations making it through the steering column and they do take a good bit of the vagueness out of the front end of the XJ308. I'll do the XK8 as time allows as I'd like to make it into a track car.

 

I don't think so. I think proper grease applied while mounted solves the problem.
I have purple ones all around and they are quiet. Of course puttting PU bushes make XK handle slightly better but to improve wooly handling of our cars further mods are required.

I'm in the proces of developing custom springs/dampers for our cars (threaded suspension). The best set-up is very close

 

I went Purple Powerflex for the entire car. I had two front roll bar bushings parish fast but think it was because they had been installed wrong. They were replaced some time ago and have had no issues since. Car is very tight.