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Caster shims on a type 3?
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Splitdog
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PostPosted: Wed Nov 12, 2025 8:10 pm    Post subject: Caster shims on a type 3? Reply with quote

Anyone doing this?
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PostPosted: Thu Nov 13, 2025 2:18 pm    Post subject: Re: Caster shims on a type 3? Reply with quote

Not that I'm aware of. On a type 3 you'd have to add some thickness to the rubber bushing that hold the beam in place. VW only added thickness to the later beam bushings in the mid 60's, and then used the "later style" bushings from then on. The big problem is that caster on a type 3 is built into the frame head that the beam mounts to. I hope this helps.
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PostPosted: Thu Nov 13, 2025 3:02 pm    Post subject: Re: Caster shims on a type 3? Reply with quote

I haven't had mine apart yet, but you couldn't slip a 1/4" piece of steel plate between the rubber and the frame head?
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PostPosted: Fri Nov 14, 2025 12:32 pm    Post subject: Re: Caster shims on a type 3? Reply with quote

Splitdog wrote:
I haven't had mine apart yet, but you couldn't slip a 1/4" piece of steel plate between the rubber and the frame head?


I haven't tried it, but I do know the bolts might be too short to bolt it all back together again. My car has had the front lowered 2 inner splines since 2006, and I've driven it quite a few miles out on the highway like from eastern Michigan to western Missouri (Joplin) and back. That's a 16 hour cruise straight thru. I haven't really noticed a need for it, but then I've probably got used it how it drives now.
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PostPosted: Fri Nov 14, 2025 3:56 pm    Post subject: Re: Caster shims on a type 3? Reply with quote

Thanks for the reply. When I get under there, I will report back with what I find. Even if I could alter the wheelbase 1/4" it would be worth it. In my bug it's night and day.
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PostPosted: Fri Nov 14, 2025 5:55 pm    Post subject: Re: Caster shims on a type 3? Reply with quote

I've never needed them, if it's dropped front and back it shouldn't be bad, but if you're nose down... yeah. You can start with your ball joints, they are eccentric.

Here's what some people are doing to get additional clearance. I would do this and add a shim, compensate with a longer new "strap" for lack of a better word.

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PostPosted: Fri Nov 14, 2025 7:11 pm    Post subject: Re: Caster shims on a type 3? Reply with quote

In a Type 1 anytime you change the ride height in the front you almost always had to install caster shims and the longer hold down bolts to get the cars to handle right. However its not something that is talked about in the Type 3 world. I believe that it is due to the superior geometry of the Type 3 beam. Also a difference of 1/4" is a huge amount.

What are you plan on doing to your car?
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PostPosted: Sat Nov 15, 2025 11:40 am    Post subject: Re: Caster shims on a type 3? Reply with quote

Also, this is for a type 34.

Erik, thanks for that. I believe that is the 'shaved bolt' trick. I saw that on youtube.


I plan on just 1 spline in back, and maybe 2 or 3 in front. Nothing drastic. I also will be doing the math to see if I can fit BRM's. I plan on short axles in the rear, and a CPS disc brake setup in front. (wide 5) If there is a fit problem, I can use Gasburners. They are offset all the way inboard.
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