Limiter vs Powerflex

**Fasteddie** · 06-04-2010, 12:28 AM

It looks like I may need to get this done before the ring trip, although either I'm getting used to it or not driving it as hard but I don't seem to feel the rear lose anymore. So I am thinking I need to replace the RTAB, powerflex seems to be a good idea but then thats probably because I don't understand what is being achieved by the limiter. I guess a Powerflex solution wouldn't need the limiter, am I right? What are peoples opinion on this who has done what? Has anybody installed powerflex on all bushes front and rear? what does that do to the ride?

**glendog74** · 06-04-2010, 12:30 AM

RTAB Limiter kit gets my vote.

There's plenty of threads on here asking your very question.

**AlexGTT** · 06-04-2010, 01:03 AM

There are conflicting views but like Rob, limiter kit makes real sense to me. Kit is cheap, effective and new standard bushes are used. This keeps OEM levels of refinement but restricts their movement in the direction causes the sloppy back end. Also prelongs the bush life considerably.

Win.

**$w!ft** · 06-04-2010, 03:24 PM

Could you get Powerflex bushes AND the limiter kit together?

_Nathan_ · 06-04-2010, 03:34 PM

Normal bushes with limiter, if you want to reduce unwanted suspension movement then solid bushes, anything inbetween seems pointless to me.

**glendog74** · 06-04-2010, 03:35 PM

Quote:

Originally Posted by $w!ft

Could you get Powerflex bushes AND the limiter kit together?

I doubt it, the RTAB limiter kit is designed to be used in conjunction with the (uprated) M3 CSL bushes at the rear. The limiter kit retains the stock bush ride quality whilst controlling their 'flexing' action better.

The Powerflex bushes due to their increased stiffness would negate the need for a limiter kit in the first place i think, but you do sacrifice some ride quality by fitting Powerflex bushes imho.

Thorney · 06-04-2010, 03:37 PM

I'd be impressed if anyone can tell the difference between poly bushes or OEM tbh, especially if you're comparing decent to decent and not knackered to decent. We run the poly bushes in the cup cars and the road cars, never had an issue, never needed to replace them.

_Nathan_ · 06-04-2010, 03:42 PM

Having run solid bushes in RTA for 20k odd road miles I doubt anyone could tell the difference to them as far as NVH is concerned never mind softer ones so would agree with John. Still don't see why you'd want any unwanted movement at all there though if the alternative doesn't make the car horrible to drive. Some of the other bush positions I can see the point in a more compliant version (front lower arms for example) but solid RTAB seemed fine to me.

Curly · 06-04-2010, 03:43 PM

Quote:

Originally Posted by AlexGTT

There are conflicting views but like Rob, limiter kit makes real sense to me. Kit is cheap, effective and new standard bushes are used. This keeps OEM levels of refinement but restricts their movement in the direction causes the sloppy back end. Also prelongs the bush life considerably.

Win.

Ditto

wazadaza · 06-04-2010, 08:36 PM

Anyone running the 'Black' bushes 'ooer' from Powerflex? I ran these on my E36 M3 and they were superb. And no need for any special tools as they come in 2 halves.

06-04-2010, 12:28 AM	#1
Fasteddie S4 - Getting the hang of it Join Date: Feb 2010 Location: Ashford, Kent Posts: 202 Casino cash: $1434	Limiter vs Powerflex It looks like I may need to get this done before the ring trip, although either I'm getting used to it or not driving it as hard but I don't seem to feel the rear lose anymore. So I am thinking I need to replace the RTAB, powerflex seems to be a good idea but then thats probably because I don't understand what is being achieved by the limiter. I guess a Powerflex solution wouldn't need the limiter, am I right? What are peoples opinion on this who has done what? Has anybody installed powerflex on all bushes front and rear? what does that do to the ride?

06-04-2010, 12:30 AM	#2
glendog74 CSL Register Uber-poster! Tetris Champion! Join Date: Apr 2008 Location: Cornwall Posts: 8,861 Casino cash: $32299	RTAB Limiter kit gets my vote. There's plenty of threads on here asking your very question. __________________ Cha'mone Mother F**ker!

06-04-2010, 01:03 AM	#3
AlexGTT CSL Register Uber-poster! Join Date: Apr 2008 Location: Herefordshire Posts: 4,374 Casino cash: $8572	There are conflicting views but like Rob, limiter kit makes real sense to me. Kit is cheap, effective and new standard bushes are used. This keeps OEM levels of refinement but restricts their movement in the direction causes the sloppy back end. Also prelongs the bush life considerably. Win. __________________ CSL Register Alcoholics Anonymous Group Leader & Businessman of the Year '93! www.earleyengineering.com

06-04-2010, 03:34 PM	#5
_Nathan_ Driving it like I nicked it Join Date: Sep 2008 Posts: 2,099 Casino cash: $13060	Normal bushes with limiter, if you want to reduce unwanted suspension movement then solid bushes, anything inbetween seems pointless to me. __________________ Nathan

06-04-2010, 03:37 PM	#7
Thorney S5 - Full Throttle Join Date: Sep 2007 Posts: 469 Casino cash: $3876	I'd be impressed if anyone can tell the difference between poly bushes or OEM tbh, especially if you're comparing decent to decent and not knackered to decent. We run the poly bushes in the cup cars and the road cars, never had an issue, never needed to replace them. __________________ http://www.thorneymotorsport.co.uk

06-04-2010, 03:24 PM	#4
$w!ft S5 - Full Throttle Join Date: Oct 2009 Location: London (W1) Posts: 309 Casino cash: $3311	Could you get Powerflex bushes AND the limiter kit together?

06-04-2010, 03:42 PM	#8
_Nathan_ Driving it like I nicked it Join Date: Sep 2008 Posts: 2,099 Casino cash: $13060	Having run solid bushes in RTA for 20k odd road miles I doubt anyone could tell the difference to them as far as NVH is concerned never mind softer ones so would agree with John. Still don't see why you'd want any unwanted movement at all there though if the alternative doesn't make the car horrible to drive. Some of the other bush positions I can see the point in a more compliant version (front lower arms for example) but solid RTAB seemed fine to me. __________________ Nathan

06-04-2010, 08:36 PM	#10
wazadaza S3 - On the open road Join Date: Dec 2009 Location: Kent Posts: 80 Casino cash: $1396	Anyone running the 'Black' bushes 'ooer' from Powerflex? I ran these on my E36 M3 and they were superb. And no need for any special tools as they come in 2 halves. __________________ E36 M3 Evo Saloon, E36 M3 Evo Coupe, E46 M3, TVR Tuscan S, TVR Sagaris, E46 M3, E36 M3 Evo, (current) 330i Sport and M3 CSL.