75 replies to this topic

[derrin71]

I want a slotted set with HQ pattern. I've tried the two main manufacturer's DBA and RDA and neither if them are interested, Need to get a order for at least 50 and they will only sell blanks to brake shops.
The R33 thig sounds interesting though?

Edited by derrin71, 14 February 2011 - 12:42 PM.

[dattoman]

Ring Howard at Race Brakes in Melbourne and ask him if he can get you the blanks

1300 365 757

DBA616 is the number
Put a U at the end for undrilled
And SL/SL for slotted

And no R33 are very different discs so forget them unless your changing the whole rear brake setup

Bear in mind... most stuff comes out of China nowdays so they are already pre drilled
If DBA doesn't have any they need to do a production run to be able to pull some off the line as blanks
This could take months till they run out of stock and do a run
And no they won't drill your pattern for you
Not cost effective to reprogram the CNC just for a pair of obscure discs

[AbsynthHatch]

I to have made inquiries about blank R31 rotors and came up empty handed (got told the same story, minimum run of 50)

However I was also told by a brake specialist that redrilling a pre drilled set, to accomadate the torana stud pattern would not alter the structual integrity of the disc

They (I won't mention their name) said it was not uncommon for some commodore rotors to have another set of holes drilled for alternate stud pattern (I don't know if this true or not)

However I have stalled on buying them at this stage, on the hope that an alternative (blank) set of rotors could be sourced.

It was probably 6 months ago when I tried, and I'm again about to start searching as I need my car mobile and this is what is holding me back.

[dattoman]

RDA wants 100 .... should be a pallet load @ 176 discs
Paid for up front

Working on it still

[AbsynthHatch]

I need 2 but would buy 4 so I have a spare set

Then I won't have drama's in the future as I plan to keep this car for while

[ls2lxhatch]

After a bit of advice re a rear disc brake conversion on an LJ. We've put Nissan Skyline R31 disc brakes on them, but have to change the stud pattern, so filled in the holes and refitted new studs.

However, the engineer is not satisfied with this, and wants us to source either blank discs, OR discs which have the 5 studs but need to be machined to size.

Are you sure the engineer is only talking about the discs and not the axles?

Welding and drilling axles is not accepted by most engineers. If the engineer is unhappy with a disc being redrilled then I would expect they will also want new axles.

[dattoman]

Good luck finding a rotor with the right pattern and offset that you can machine the diameter down

Highly doubt that will happen

[dattoman]

That disc is 72mm high
R31 rear is 60

So thats a no show

It needs to have a large enough centre bell to fit over your axle flange too..... and still have enough metal left for the pad to sit on once machined down

[DanWA]

i'm in this same boat and will just be re-drilling the R31 axles/rotors and hope an engineer is ok with it or wait until a bright spark on here can get a hold of some blanks

[ls2lxhatch]

Ask the engineer if you can buy another disc and drill the new holes without welding the old holes then have it tested to prove that it is still structurally sound. The engineers main problem may be that the old holes were welded.

Many factory axles have extra holes drilled in them yet still are strong enough for the job. The disc is sandwiched between the axle and rim and centred on the axle, the studs holes in the disc do not take any load. The disc itself does not experience the same loads as an axle.

[DanWA]

i will buy 2 pairs, so i have a 2nd pair for spares!

[derrin71]

Count me in for 2 pair of sloted.

[DanWA]

oh yeah should add, i wanted slotted to!