Difference between inner and outer spline adjustment

[a-train]

I did a quick search, but couldn't find a concrete answer.

So I understand there are more inner splines than outer splines on the rear torsion bar (something like 44 outer and 48 inner???).

So adjusting the springplate on the outer splines makes a bigger difference than on the inside.

I thought I did one inner and one outer spline on each side when I lowered my bus, but my bus is sitting about 9/16 or so lower at the rear on my passenger side than on my driverside and to me it is noticeable and bugging the shit out of me.

So, without pulling both sides off and getting out the protractor etc... I want to raise the passenger side about 9/16 in. at the rear.

Does anyone know the difference in inches at the rear between an outer and an inner spline? I'm thinking of raising it an outer and lowering an inner......or should I go up two outers and down two inners?

Thanks, and I know I should probably do both sides at the same time and measure etc.... but in the interest of time, trying to get away with one side.

-A
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[vwtony2]

unless you can be sure your bus is a straight as it was when it left the factory and your torsion rods have the same amount of spring in them as they did when they were new. Counting the "clicks" or splines is only a guide line. A protractor is a neat looking tool but what you need is a good eye and a bunch of trial and error. Just keep adjusting until you get it right. By the time you are done you should be able to remove and adjust spring plates in your sleep
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[a-train]

not exactly what I wanted to hear, but I figured that is how it would play out anyway.

I think I can get it in one or two shots.

Thx.
A
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[a-train]

Calculating this using a right triangle method and knowing the length of the spring plate (I approximated 17" from center of torsion to center of wheel) and knowing the angle difference in degrees based on dividing 360 by the number of splines I get

SIN (angle difference) * length of torsion bar = change in height at the wheel

This is changing one inner and one outer notch in opposite directions.

So,

SIN (.681818) * 17 = .2 inches at the wheel.

Rotating outer down one spline and inner up one spline will raise the rear .2 inches on the corresponding side.

I guess this is close enough
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[gatorwyatt]

stock height or lowered buses ,either way you use an angle finder to make both sides even.

[aggro_jo]

your mathmatical formula doesnt allow for sag when the suspension settles. but you are in the ballpark. in my experience, one inner and one opposite outer results in anywhere from 1/8" to 1/4" drop.

[a-train]

I figured it'd be off a little, but either way it sags at both positions so I neglected it (unless it sags more when it's lowered). I think i'm going to go nab a magnetic protractor later today.
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[bastardbus]

Magnetic protactor is the only way to go.
Open a VW Bentley workshop manual, it is the way they do it.
Trying to "eye" it is a serious waste of time.
The protactor is like $3-$5 you can get the spring plates
dead on equal to each other every time.
I have used this method dozens of times.
works perfect.

[Andrew]

[bill may]

50 minutes. there are 60 minutes in a degree.
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http://www.thesamba.com/vw/forum/viewtopic.php?t=453617

[hsosa1]

I'm replacing one stock height. When I mark the springplate do I mark the angle with a marker on the rail? - can someone post the bentley manual directions?
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[R.Rabbit]

http://vw.zenseeker.net/Wheels-TorsionBars.htm

probably more info that you really wanted
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[joe56vw]

[hsosa1]

[krusher]

[hsosa1]

Ok so my bus is stock height. I just need to replace one springplate and the bushings. The transmission is removed. The bus is somewhat level. Here is a picture of the old springplate with the markings . I have not removed the old springplate but have marked with an awl the angle on the frame. see pic. When I replace this How do I install it? I know get bentley manuel which I dont have . I want to set it stock. Does it look stock from this picture? Should I just copy the marks from the old plate to the new plate? Can someone post the bentley page. I know it s not that tough but Im bad at geomeotry and want to get it right . Help ! If someone can just post how to install a stock springplate setting. IE place protractor on then step two etc. Do u grease the bushings ?
. By the way the right side is the same and the marks are off by one teeth on both sides.

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[pyrOman]

Even with the "correct" instructions, how does anyone know just how many inner splines they have adjusted when you can't see in there????
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[hsosa1]

Im barely understanding the outside splines. I guess that s why need a protractor which I have no idea how to use... Anyone ? Ive scoured the samba for instruction on how to install for stock plates ...no luck just loweing them. bentley online somwhere I can just post the page here ...
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[pyrOman]

It isn't rocket science though. I've done it hunnerts of times even without an angle finder (a.k.a. protractor). Here, I'm setting up mine for IRS.

Whatever angle you set on one side, just match it on the other.
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[sventinker]