_Markxvt_
Posted 14 November 2018 - 08:14 AM
Hi all,
I have a 1978 UC sedan that I am restoring and need to replace the rear brake drums.
I am having an incredibly hard time finding a new replacement supplier.
Original spec of car was Engine L16, Trans MC6, Rear Axle GU8, Model UC8UH69
Can anyone help with information on a supplier?
Thanks in advance,
Mark
Do I feel lucky? Well, do ya, punk?
Posted 14 November 2018 - 09:10 AM
Girlock or PBR brakes ?
PBR's run the same shoe as HR... so might be a slim chance of fitting
228.6mm
GIrlocks run the same shoe as Commodore
230mm
Whats the max oversize marked on the drums... that will determine which one you have
Then you'll need some measurements to try track down something that might fit
Overall height of drum
Centre hole size
Machined face depth
_Markxvt_
Posted 14 November 2018 - 03:48 PM
Girlock or PBR brakes ?
PBR's run the same shoe as HR... so might be a slim chance of fitting
228.6mm
GIrlocks run the same shoe as Commodore
230mm
Whats the max oversize marked on the drums... that will determine which one you have
Then you'll need some measurements to try track down something that might fit
Overall height of drum
Centre hole size
Machined face depth
Thanks for your reply.
The pad size is 44mm
Inside diameter is 230mm
Height is 68mm
Centre hole size is 61mm
Machined depth is 50mm
Can't locate the oversize on the drums as badly corroded.
Slowly getting more info on these drums, have had some people saying HD or early Commodore drums.
Thinking I will have to take it in to the local brake guys to see if it can be identified.
Cheers.
Do I feel lucky? Well, do ya, punk?
Posted 14 November 2018 - 09:24 PM
If the shoes are 44 wide and the drum is 230 now... they are early ones
230.1mm is 1st oversize so technically you could shoot your drums up to Clutch and Brake in Malaga and have them supply shoes to your drum size
If your really after new ones... get hold of some RDA6780 drums and do a compare
Clipboard01.jpg 56.1K
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_Markxvt_
Posted 15 November 2018 - 08:13 PM
Just for completeness and possibly to help someone in the future. Turns out mine are the same as an EH Holden, go figure!
Code for the RDA drums is RDA6780.
Thanks go to Dattoman for the advice.
Edited by Markxvt, 15 November 2018 - 08:15 PM.
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