2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Is anybody Running ball bearing pivot control arms?

Old Jan 25, 2011 | 08:03 AM
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From: mass
MA Is anybody Running ball bearing pivot control arms?

I have been thinking about the possibility of maching out my control arms to fit cartridge bearings. I know alot of rally teams do this and i'm sure other motorsport teams do as well. Has anybody dont this? If so i would like some feedback and maybe pictures if you have them. Thanks!
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Old Jan 25, 2011 | 08:39 AM
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Originally Posted by Andy87t2
I have been thinking about the possibility of maching out my control arms to fit cartridge bearings. I know alot of rally teams do this and i'm sure other motorsport teams do as well. Has anybody dont this? If so i would like some feedback and maybe pictures if you have them. Thanks!
Greased delrin bushings move 95% as freely. Mine fall under their own weight without the ball joints bolted on.
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Old Jan 25, 2011 | 08:46 AM
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Originally Posted by Andy87t2
I have been thinking about the possibility of maching out my control arms to fit cartridge bearings. I know alot of rally teams do this and i'm sure other motorsport teams do as well.
I'll bet they're servicing the suspension after every run...are you comfortable with that level of maintenance?
Race vehicles get all sorts of cool toys but the adjustments and performance come with a very high price...constant attention (and replacement).

Also, race vehicles are designed to excel in a very circumscribed environment- removed from their natural habitat, they don't work very well at all.

The modification you propose will probably net a small bit of suspension compliance (emphasis on "small") and only you can evaluate the cost/benefit issue...but it makes little sense to me unless you can provide the money and fettling lavished on the cars you want to copy.
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Old Jan 25, 2011 | 10:18 AM
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Check AWR control arms.
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Old Jan 25, 2011 | 11:43 AM
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Look into using Heim joints.
This car is really limited on suspension parts
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Old Jan 26, 2011 | 09:08 AM
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Originally Posted by Hypertek
Look into using Heim joints.
You have no idea what you are talking about.
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Old Jan 26, 2011 | 09:09 AM
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Originally Posted by jjcobm
Check AWR control arms.
He raised the price, They are about $400 per arm now.
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Old Jan 26, 2011 | 01:12 PM
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yikes
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Old Jan 29, 2011 | 08:37 AM
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From: mass
thanks for some food for thought. i would think the ball bearing pivot would be plenty durable and not require too much service..... if it needed replacement it would just be pressing the old one off and pressing a new one on. Delrin is my other though as well, i know i want to go more solid this poly eurothane for sure.
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Old Jan 29, 2011 | 08:39 AM
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Originally Posted by Hypertek
Look into using Heim joints.
This car is really limited on suspension parts
Yeah.........No..... not building a custom control arm..... just modding the stock ones.
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Old Jan 29, 2011 | 09:04 AM
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Originally Posted by Andy87t2
... i would think the ball bearing pivot would be plenty durable and not require too much service......
That's possible.
Keep in mind however that the stock pivot point "soft mounts" allow for minor deflection in many directions (which is presumably what you're attempting to eliminate) but your ball bearing replacement will only tolerate stress from a single vector.
Unless the rest of the suspension is equally tightened up it would seem that all the misalignment (inherent in a multilink construction) will be newly focused on a part not designed to cope.

Or maybe I'm just overthinking this...
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Old Jan 29, 2011 | 09:45 AM
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Originally Posted by clokker
That's possible.
Keep in mind however that the stock pivot point "soft mounts" allow for minor deflection in many directions (which is presumably what you're attempting to eliminate) but your ball bearing replacement will only tolerate stress from a single vector.
Unless the rest of the suspension is equally tightened up it would seem that all the misalignment (inherent in a multilink construction) will be newly focused on a part not designed to cope.

Or maybe I'm just overthinking this...
Maybe just a bit. The part is on the market already and it works.
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Old Jan 29, 2011 | 10:08 AM
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Well, that's what counts.
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Old Jan 29, 2011 | 11:11 AM
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Originally Posted by LargeOrangeFont
You have no idea what you are talking about.
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