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It looks GREAT but it drags on everything.... I pretty sure I lowered it only 1 click and didn't think it'd drop that low. What are my options now? I can redo it but I'm almost positive it'll go back to the previous height if I raise it 1 click down. Maybe adjustable spring plates, any ideas would be great. Also I'd like to run a 185/55/15 or similar and obviously can't do it with this height

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One "click" (assuming one tooth on either an inner or outer spline on the tosion bar) will drop your car about 2-1/2" and I'll bet that's what happened.

 

You need a combination of inner and outer splines, working together, to drop in 1/4" increments.

 

Look at the article up under the resource tab and knowledge base.  

 

Look here:   https://www.speedsterowners.com...rear-ride-height--vw

Last edited by Gordon Nichols

What Gordon says is the truth you absolutely need to adjust BOTH inner and outer splines in increments or you get what you have going on...learned my lesson recently lowering my CMC...finally did it the correct way, now it is lower, rides like before with give in the suspension. High curbs are still a bit of problem unless you approach at an angle and I've found 'speed bumps' are to be taken slowly and at a bit of an angle if possible...but that is true of any lowered car 

 

I have a swing axle and I lowered my rear end aprox. 2 1/4 +'' going +10 on the inner and -10 on the outer splines. And the rear wheel camber stayed the same at aprox. 2-3* neg. I understand VW's have anywhere from 0* to 2-3* neg. camber and each car can be a bit different.

 

What is your camber like now?

 

I just read/learned on a VW forum from the UK the other day that for a swing arm going +1 on the inner spline and 0 on the outer you can get the same result...but have no knowledge if that works? I understood it doesn't work for IRS from the forum.

Last edited by G.R.
Show off!
Originally Posted by MusbJim - '14 VS SoCal:
 

Slammed - I like it low (for show). Your handle is "Slammed" after all.  

 

Looks cool.Maybe raise the rear so the wheel well arch is just at the top of the wheel. Noticeably lowered but not dragging on every speed bump or driveway. Follow the instructions on the link Gordon provided and you're good to go! 

 

IMG_1392

 

Last edited by Bill Prout
Originally Posted by G.R.: 

I just read/learned on a VW forum from the UK the other day that for a swing arm going +1 on the inner spline and 0 on the outer you can get the same result...but have no knowledge if that works? I understood it doesn't work for IRS from the forum.

What would not work with an irs?

Originally Posted by ALB:
Originally Posted by G.R.: 

I just read/learned on a VW forum from the UK the other day that for a swing arm going +1 on the inner spline and 0 on the outer you can get the same result...but have no knowledge if that works? I understood it doesn't work for IRS from the forum.

What would not work with an irs?

 

Going +1 on the inner spline and 0 on the outer spline to get the same result...just reported what had been posted by a couple UK VW people on the forum..I do not know why it doesn't work...

 

Well, way up above he was saying that going +10U outer  and -10D inner will give you about the same result as going +1U outer and zero inner - True, both will result in lowering the rear by about 2.4".   If you used the inner splines instead, the result would be similar, just very slightly different (within 1/4" difference in height).

 

Because they have essentially the same torsion bars back there (swing arm or IRS), this will be the same result on both swing arm and IRS, however the wheel camber changes a lot on a swing arm and zero on IRS.  Maybe that's where the confusion lies.

 

Without seeing the rest of what was seen on that other forum for context, I'm only speculating, but this sounds pretty good.  I don't have an early VW (before 1969) shop manual, so I can't totally verify the incremental degrees of the bar splines for a swing-arm versus what I published (for an IRS rear) but I was never aware that they were different, other than in length.  Maybe someone else on here can help?

 

I also just found that CIP1 offers a rear torsion bar adjuster that works just like a front bar adjuster - pretty trick, and something a LOT of us could use (You listening, Builders??)

 

http://www2.cip1.com/ProductDe...Code=C26%2D501%2D200

Last edited by Gordon Nichols
+10 in, -10 out is a 5.5 cm drop. +1 in, 0 out is a 6 cm drop. They are certainly close, but they are not identical from an adjustment perspective. However, 0 in, +1 out is close to a 5.5cm drop, though its technically 1/6 of a degree less.

As far as I know, the bars have always been 40 inner, 44 outer splines.

IRS camber does change with suspension movement (it's a semi-trailing arm, not a pure trailing arm like the front) but it's certainly less than the camber change with a swing-axle.
Last edited by justinh
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