Powerflex or strongflex bushes?

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wella_fella
Joined: Thu 04 Jun, 2009 09:57
Posts: 130

  Z3 roadster 2.8

Powerflex or strongflex bushes?

Post by wella_fella »

Hi,

Just wondering if people have had any view on which bushes to put in the lower arms of my 2.8 zed?

The powerflex seem to be the favourite option but has anyone used the cheaper strongflex ones?

They seem to have softer ones for road use and harder ones for track use!

Any opinions would be great to hear!

Thanks.
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OldskoolRS
Joined: Mon 06 Feb, 2012 14:23
Posts: 412

  Z3 roadster 3.0i
Location: Wokingham

Re: Powerflex or strongflex bushes?

Post by OldskoolRS »

Wondering the same thing myself recently. I need to replace mine due to a slight knock on sharp turns, so figured I'd go for the 'normal' road use version as a compromise between too firm and just fitting OEM type.
wella_fella
Joined: Thu 04 Jun, 2009 09:57
Posts: 130

  Z3 roadster 2.8

Re: Powerflex or strongflex bushes?

Post by wella_fella »

Does anyone know if there is a 'm' bush which is a bit harder than the standard? Or are they the same?

I'm still dubious of buying the poly bushes and having too harsh ride!! :head:
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Robert T
Site Admin
Joined: Mon 12 Jun, 2006 10:35
Posts: 10171

  Z3 roadster 1.9
Location: Cheshire

Re: Powerflex or strongflex bushes?

Post by Robert T »

The ///M and standard bushes are indeed different. If memory serves, the standard is only part rubber, whereas the ///M is solid rubber. The ///M bush is also eccentric.

There are some pics of the standard bushes in these threads:

http://www.zroadster.net/forum/viewtopi ... 18&t=10641
http://www.zroadster.net/forum/viewtopi ... =5&t=31270

There are some eccentric poly ones shown in this thread:

http://www.zroadster.net/forum/viewtopi ... 32&t=26415

Am struggling to find a pic of an ///M bush... must be one on here somewhere...

Cheers R.
Arctic Silver '99 Z3 1.9 & Black '59 Frogeye 1275cc
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Mike Fishwick
Joined: Fri 19 Jun, 2009 10:27
Posts: 2093

  Z3 roadster 2.8
Location: Daglan, France

Re: Powerflex or strongflex bushes?

Post by Mike Fishwick »

You will not notice any additional ride harshness with Powerflex bushes, but they will hold the suspension geometry a lot better than the OE rubber bushes. We have them on the Z3 (ARBs and wishbone bushes) and everywhere on our Golf TDI, and have no problems with noise of harshness.

Stop worrying and fit them!
A Z3 is not just for Christmas - it's for life!
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OldskoolRS
Joined: Mon 06 Feb, 2012 14:23
Posts: 412

  Z3 roadster 3.0i
Location: Wokingham

Re: Powerflex or strongflex bushes?

Post by OldskoolRS »

I've just bitten the bullet and ordered some Powerflex bushes for my front wishbone rear bush. I also ordered two carriers to make the changeover easier. The existing carriers look in a bit of a state, so I'll just be able to cut straight through them with my angle grinder, then fit the replacements complete with the Powerflex bushes.

I'll report back how it feels afterwards, probably not until after the bank holiday as I won't get chance to fit them (assuming the arrive by then anyway). I'm going to the 'SuperCar Sunday' at Goodwood on May 6th so don't want to risk having the car in bits on this day. :D

I like doing changes in step fashion so I appreciate what effect each change has, plus it means less danger of starting a job that drags on too long. I recently fitted a strutbrace and noticed a small, but noticable positive improvement in the feel of the car, we'll see if the bushes make the same sort of difference. I suspect mine are worn as I can induce a 'clunk' by vearing side to side at low speeds, so not comparing like for like I suppose.
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BladeRunner919
Joined: Fri 17 Feb, 2012 20:18
Posts: 2225

  Z3 roadster 1.9

Re: Powerflex or strongflex bushes?

Post by BladeRunner919 »

OldskoolRS wrote:I also ordered two carriers to make the changeover easier.
Where did you buy them from, and how much? Sounds like a good idea to me, if they're not too expensive.
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OldskoolRS
Joined: Mon 06 Feb, 2012 14:23
Posts: 412

  Z3 roadster 3.0i
Location: Wokingham

Re: Powerflex or strongflex bushes?

Post by OldskoolRS »

Bought them off Ebay, £17 each plus £3.50 postage. As I've read how easy it is to fit the polybushes once the old bits are removed, I though I'd save the hassle of removing the old bush from the carrier. The £40 cost is easily offset by not paying any labour as I can do this myself.

http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... SA:GB:1120 item number: 160452854986

http://www.ebay.co.uk/itm/170509680782? ... 1438.l2648 Item number: 170509680782
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