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D2 Brake Fitting Help

d-ranged
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d-ranged Enthusiast

d-ranged

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I am in the middle of fitting my D2 6 pots to the front of my 33 GTR. I have the drivers side on, no problem. Passenger side, i have put the disk on, held it on with wheel nuts then fitted the caliper. The disk is extremely close to the inside brake pad. When i spin the disk it spins freely until a certain point then gets stiff.

I can still push it through by hand with a little bit of force then it loosens up again.

Is it going to be OK like this? If i drive it will it just wear the pad enough to stop it from rubbing?

I really don't know what else to do. The washers that come with it to space it are no good as they just push the pad even closer to the rotor.

Any ideas?

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KiwiRS4T Grand Master

KiwiRS4T

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Put it all together, bleed thoroughly, and drive back and forth (not on the road and with no hard braking) and then jack it up and see if it is still binding. I would not be keen to try to get rid of the problem by hard braking, You want it all lining up properly before you bed the pads and discs in as per instructions.

Does the piston go all the way back in? Tried levering it in (without the pad and opening the bleed screw)?

d-ranged Enthusiast

d-ranged

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Put it all together, bleed thoroughly, and drive back and forth (not on the road and with no hard braking) and then jack it up and see if it is still binding. I would not be keen to try to get rid of the problem by hard braking, You want it all lining up properly before you bed the pads and discs in as per instructions.

Does the piston go all the way back in? Tried levering it in (without the pad and opening the bleed screw)?

Yeah the pistons are all the way in, the whole kit is brand new.

I also had a look at the passenger side and that is pretty similar.

I have just been trying to get it straight for the last 4 hours with no luck. I have tried swapping the brackets. I have tried fitting the brackets in every way possible, you can only bolt the calipers with them one way which is the original way i put them on.

They only need to move over a tiny bit. I really don't know what else to do now.

Duncan Grand Master

Duncan

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hmm not awesome. they will still work fine but the inner pad will wear faster than it should. I think you already said the shims would worsen the problem not correct it.

Assuming all mounting surfaces are flat and straight eg no small metal dags pushing it out, your only option to correct it would be to have the adapters machined to take a mm or 3 off. Or you can just pretend it never happened and live with faster pad wear than you should have. Or return them....

d-ranged Enthusiast

d-ranged

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hmm not awesome. they will still work fine but the inner pad will wear faster than it should. I think you already said the shims would worsen the problem not correct it.

Assuming all mounting surfaces are flat and straight eg no small metal dags pushing it out, your only option to correct it would be to have the adapters machined to take a mm or 3 off. Or you can just pretend it never happened and live with faster pad wear than you should have. Or return them....

OK thanks for that mate. I dont drive the car much so wear is not a huge issue, it probably does about 1000 miles a year. Although i would like it to be fitted correctly really! Yeah, the shims will just push the caliper even closer to the pad.

I am sure all mounting surfaces are flat, I will check again tomorrow though.

I am in talks with the company i bought them from who are talking to the factory that make them so will see what they say. I cant really send them back though, i have sold my brembos :(

Dale FZ1 Veteran

Dale FZ1

Posted
Posted

Assuming all mounting surfaces are flat and straight eg no small metal dags pushing it out, your only option to correct it would be to have the adapters machined to take a mm or 3 off. Or you can just pretend it never happened and live with faster pad wear than you should have. Or return them....

I'm with Duncan on this one.

Once you've double checked all mounting faces are free of scale/debris, check the clearance again.

Either have the supplier send some better spec (slightly thinner) adaptor brackets, or get yours machined. Take off 0.5mm will probably resolve everything. Not a big or expensive job.

d-ranged Enthusiast

d-ranged

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I have managed to get the brakes on properly. There was a metal nipple that was touching the mounting bracket a tiny bit which was stopping it from sitting flat against the hub. It was quite hard to see that it was touching as it was so minmal but it kept catching my eye and I had a feeling it was because of that.


I ground it down and refit the mounts, disk and calipers and they all line up perfectly!

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