• Hi Guest!
    You can help ensure that British Car Forum (BCF) continues to provide a great place to engage in the British car hobby! If you find BCF a beneficial community, please consider supporting our efforts with a subscription.

    There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Subscribers don't see this gawd-aweful banner
Tips
Tips

TR6 TR6 - how many brake caliper shims?

I just measured mine since they're off the car. With about a thousand miles on them they both measured 9/16 of an inch.
 
Finally got home. I measured the brake pads and they are all the same thickness, 19/32". With the antisqueel pads they are 5/8" each. They are all NOS. With the comments about the calipers being centered, I decided to examine the other side which I have not touched. To my suprise it is not centered over the rotor either. Check out this pick.
 

Attachments

  • 16985.jpg
    16985.jpg
    58.8 KB · Views: 202
I think you have a case of tolerance interference. I have done several brake jobs where I used new pads and rotors only to find that the wheel would not spin freely due to the pads contacting the rotors. If you sand down the pads to get a little clearance, I bet everything will be OK. Nowadays I never change both pads and rotors at the same time to avoid this...
 
I would agree with you Ian. I admit I was very frustrated when I got home last night. I have checked out everything suggested. I am sure I did everything correctly. I now think it is just a matter of having very little clearance because of new parts. I am sure I will hear about it, but now that I know I am not the reason for the slight off centering of the calipers, I am going to try the shim. I'll let you all know what happens next week.

Kevin
 
the shims will work if you are moving the caliper toward the engine, it appears the rotor is a little right of center, adding shims will only make it more off center,that is if you are adding shims between the caliper mounting hole and where they are bolted to it in moves the caliper inward and placing the rotor more toward the out board pad, sand the offending pad down and be done with it
, wont hurt and think, the shims bently talks about I think are the anti squeel shims on the back of the pads
just my opinoin
 
Sand one pad, 180 grit on a flat surface. No shims as they're a bodge. Same for the "anti-squeal" thingies. Lose 'em. Spray some Permatex blue anti-squeal goo on the pad backing and assemble.

The pads are "self-centering" 'cause the hydraulics will take up the difference side-to-side. All it needs to do is have rotor movement without pad resistance to start with.
 
Hi All,

Just wanted to give a follow up. The actual reason the calipers were off center? The PO put in the bearings incorrectly. The inner bearings were raised just slightly instead of being recessed 1/8" - coincidentally the amount the calipers were off center. Since the bearing turned smoothly, it never dawned on me that they were put in wrong. A special thanks to Dale for the private email telling me to check that out. Thanks again for all your input.

Kevin
 
Back
Top