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Author: Subject: Brake Rotor Shims
UKKid35

posted on 13/8/21 at 04:58 AM Reply With Quote
Brake Rotor Shims

In order to centre a new rotor in the caplier, I'm hoping to get a 1mm shim made to go between the hub and the bell

Is that an acceptable thing to do, if so what material would be best?

Can they be bought off the shelf even?

Bolt Pattern (Lug Pattern) PCD 5x114.3
Center bore (hub bore) 71.5 mm

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Theshed

posted on 13/8/21 at 07:07 AM Reply With Quote
Not an uncommon thing to do. Often found on Jaguar back axles. However may be easier to shim the caliper. If you use a soft shim there is a danger of the bolts coming loose. You cab buy shim stock in sheets - I think that is generally a hard steel.

Have fun

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nick205

posted on 13/8/21 at 10:06 AM Reply With Quote
I too would shim the caliper.

You can buy shim washers in various thicknesses.

I used Shim washers to correct the rear toe on my MK Indy as the rear wishbones didn't have toe adjustment.

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UKKid35

posted on 13/8/21 at 10:12 AM Reply With Quote
The bolt orientation on the CP5200 calipers means shims allow for an increased disc diameter

I'm going to stick with 320mm discs for now, but I'm switching to a 32mm thick disc

The current setup I have centres a 30mm disc

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nick205

posted on 16/8/21 at 12:22 PM Reply With Quote
AS another solution:

If you're fitting different rotors can you not get different bells to suit the calipers and rotors, providing the correct centres?

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UKKid35

posted on 27/8/21 at 03:46 PM Reply With Quote
Worked out well in the end

Here are the shims - They really are beautifully made





First I had to make sure that the wheel nuts were suitably tight



Now the clearance is equal each side



Great on the road, will hopefully get a chance to try on track within a few days

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Mr Whippy

posted on 27/8/21 at 04:11 PM Reply With Quote
Looks perfect, nice one
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