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Old February 24th, 2012, 10:32 AM   #1
Jogyver
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Default Rear Camber fix

I have eliminated the IRS torsion bars in the rear and installed some coil over spring/ shocks (QA1) . The rear wheels still have negative camber . The only this I may do is change the springs out to something heavier. Then again I was thinking of a 70 " vette spring configuration. Any input would be appreciated.
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Old February 24th, 2012, 11:05 AM   #2
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Default Re: Rear Camber fix

I lowered the rear of mine one outer spline and it had alot of camber. I put a set of air shocks and raised it back up just slightly and I was happy with mine.
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Old February 24th, 2012, 11:14 AM   #3
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Default Re: Rear Camber fix

If they are the baja type then they are adjustable.
If not or if you already have them maxed out I have to agree with Ksc
and go with air shocks. Your ride will be allot better with air anyways.

But I have to ask - why eliminate the rear torsions?

Last edited by sandfreaks; February 24th, 2012 at 11:32 AM.
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Old February 24th, 2012, 11:23 AM   #4
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Default Re: Rear Camber fix

You can Flip the rear trailing arms it I the tech bin for how to and works great.
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Old February 24th, 2012, 12:37 PM   #5
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Default Re: Rear Camber fix

OK, I had 2 IRS Bugs with uneven neg camber in the rear. One side had more than the other. Both neg. One car I took the swing axle approach and raised the rear one inner spline. Nothing happend to the camber, the rear just raised some.
The other Bug was a little high in the rear when I bought it. Also having both rear wheels with neg camber, one more than the other. I lowered the rear one inner spline just because I wanted too. No real camber change.
Why am I telling these stories? Well, without confirming anything. I think bent control arms are the problem. Next time around, I want to set the suspension where I want it. Then cut and weld the control arm to correct the camber.
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Old February 25th, 2012, 06:06 AM   #6
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Default Re: Rear Camber fix

I think worn out torsion bars will do the same thing.
My first baja I got from ny Brother in law. He beat the piss
out of it and it sat with one side lower than the other.
In this pic of my other baja you can kinda see that the rear is
also uneven but with Pos camber. I tried 3 times to get it
to be even on both sides/ What I finally found that it
was the front beam not the back that was the problem!
One side sat higher than the other which made the back apear to be the problem.
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Old February 25th, 2012, 09:44 AM   #7
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Default Re: Rear Camber fix

Blah, blah, blah, blah, blah, blah, blah, blah,

EDIT: Ok, I had a bunch of drivel posted, then I went a searched your project out. I think heavier springs would be your answer if you wish to retain coilovers. As suggested above if the springs are adequate but the camber is caused by being too low, just flip you trailing arms over. Sweet project!
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Last edited by mkparker; February 25th, 2012 at 09:52 AM.
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Old February 25th, 2012, 12:29 PM   #8
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Default Re: Rear Camber fix

ok I justed looked to and I def added dribel
to the post.
That is a really cool setup.
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Old February 27th, 2012, 08:43 AM   #9
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Default Re: Rear Camber fix

It not your typical VW rear setup. I have eliminated the torsion bars and add adjustable coil over shocks. The Swing arms are aluminum Porsche 944s turbo arms. The drive is a BMW M30 posi differential.


Just trying to get the wheels with 0 Camber . May have to finish the dam thing first to figure out the camber issue based on the ass end weight and the coil spring rating.

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Old February 27th, 2012, 09:39 AM   #10
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Default Re: Rear Camber fix

If getting the camber out, with more spring, gets the rear too high, looks like moving your trailing arm mounts up wouldn't be too big a deal. I'm sure you are doing it the way you want, but a linked live axle would have solved your camber issues.
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Old February 27th, 2012, 10:06 AM   #11
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Default Re: Rear Camber fix

An inch or so up or down does very little to camber on an IRS. When you go to the extremes is when something has to be modified. Swapping left and right arms or raising the whole rear frame.

My comments above are about bad camber on stockish height IRS VWs. Bent control arms, bad bushings and I guess a bad bearing could all contibute. I think a bearing would cause other issues, too.
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Old February 27th, 2012, 04:43 PM   #12
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Default Re: Rear Camber fix

Im guessing that flipping 944 trailing arme would be probematic..

Or is the aluminmum weldable?
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Old February 27th, 2012, 04:54 PM   #13
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Default Re: Rear Camber fix

Aluminum's weldable with a TIG machine, but for something that crucial, you'd better be a dang good welder!

What about rotating the pocket/mount where the trailing arm attaches to the frame?
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Old February 27th, 2012, 05:42 PM   #14
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Default Re: Rear Camber fix

Jogyver: Wow.
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Old February 27th, 2012, 05:43 PM   #15
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Default Re: Rear Camber fix

Those trailing arms sure are pretty..and they show well on a volksrod!!
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Old February 27th, 2012, 05:45 PM   #16
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Default Re: Rear Camber fix

btw... Shiny inner wheel parts look excellent!!!
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Old February 27th, 2012, 06:15 PM   #17
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Default Re: Rear Camber fix

joe--give yourself a baseline to measure from--set the chassis on jacks absolutely parallel to the floor-- find a good uniform flat floor to boot. run mason's string or whatever you have to to project the base line back under the rear hubs. you should be able to establish what angles are where and then divise the corrections. you may need to reset a pivot point. knowing the distances from the floor to these important points will give you an idea which way she is a tweaking.
sometimes you can transfer coordinates to a sheet of plywood or the floor with a framing square. you could tape 3 of them together to get a perfect standing square.
anyway, this will give you a beginning understanding of what you want.
this is similar to the 5 and 7 series suspensions I am dealing with currently.
recently, I found that my vanagon rears were canted at the hubs, specific to each side, so there was no swapping sides. I added 7 series brakes and hubs and had to modify my tooling accordingly.
most suspensions are the same in theory: the springs always point to a point somewhere over the very center of the chassis, way up high. and the lower control arms are always longer than the uppers. [4 bar stuff]
nice work
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Old February 28th, 2012, 09:12 AM   #18
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Default Re: Rear Camber fix

Looks like the fix is to raise the front anchor points on the swing arm . So what I found searching the web was adjustable camber boxes that the racers use on Porsches. So right now I'm flipping the coin to fab up my own or buy a set.
Thanks for your input.
Dam I wish I had a Bridgeport Mill now.
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Old February 28th, 2012, 06:53 PM   #19
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Default Re: Rear Camber fix

Its amazing what you can do with your kids Lego type toys . For the hell of it I mocked up something similar the rear IRS setup . Sure enough , by moving the front pivot point up the camber will go positive . Move it down , it goes negative. I have plenty of room to install an adjustable Camber box.
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Old March 8th, 2012, 06:12 AM   #20
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Default Re: Rear Camber fix

I know I nixed the Corvette spring idea early on, but I just saw this.....



I also see you have a solution, jut thought this was too cool!
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Old March 8th, 2012, 09:18 AM   #21
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Default Re: Rear Camber fix

Quote:
Originally Posted by mkparker View Post
I know I nixed the Corvette spring idea early on, but I just saw this.....



I also see you have a solution, jut thought this was too cool!
everything about that thing is terrifying............................
and i just love it
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Old March 14th, 2012, 03:52 AM   #22
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Default Re: Rear Camber fix

Quote:
Originally Posted by Jogyver View Post
Dam I wish I had a Bridgeport Mill now.
Take a trip to Cinci, I have access to a Bridgeport look-a-like, just needs a good cleaning and tramming, been about 3 years since I used it last, but I used it for while back then

Ron
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Old March 14th, 2012, 08:34 PM   #23
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Default Re: Rear Camber fix

Quote:
Originally Posted by mkparker View Post
I know I nixed the Corvette spring idea early on, but I just saw this.....



I also see you have a solution, jut thought this was too cool!
Ohh, that just tickles me in a happy place!!!!!
Jeff
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Old March 14th, 2012, 10:50 PM   #24
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Talking Re: Rear Camber fix

Jeff, how dare you tickle your happy place and then post about it....someone get me an sani-wipe....my keyboard suddenly feels dirty!

But DAAAHMMMM! I must admit, I agree. Now if it that vehicle could only be dropped off on my driveway for...say $4500 or so!!
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