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1979 Bay Bus brakes

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helbus Administrator Mad fabricator, paint and body

7,386 posts · joined Sep 2002 ·

#692867
Can anyone confirm for sure that 1979 Bay Bus or if early T3 busses from 1979 have any of the following the same as a 1975-77 bus

Same diameter and width front disc brakes?
Same diameter brake master and fail light switch?
Same size booster?

If 1979 bay busses had identical as 1975, then that is a very easy answer to the question. It would be good to know if the same size and power brakes continued into the early 80's
EJ22 into Bay Microbus - Finished project build thread- click on this spot here for info

Andy Andy\'s Adventures

2,820 posts · joined Nov 2002 ·

#692925
Not that it answers your question, but I know the rear drums and cylinders remained the same....

The ATE disc's that I bought say 08 '72 - 07 '79 on the box. Size "278x130x86".
I think the discs and callipers remained interchangable, but can't confirm this. No idea on the booster etc but T3's stopped better then T2's in my opimion, so something must be different 🙂

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#692936
Disc's, rotors, calipers and pads same 73-86 in my wholesaler catalog
Master and booster different part numbers, can't coment officially on size but I think it's just a bigger booster as T3's are heavierand stop better, rears are also the same as stated.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

Andy Andy\'s Adventures

2,820 posts · joined Nov 2002 ·

#693069
Most T2's would struggle to pull 12" vac anyway, so braking is automatically lower 😂

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#693227
Although my nongenuine parts book does'nt denote any variation, I'm quite sure the '79 model had a larger diameter booster. Someone with a factory parts manual might be able to confirm.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

General_Failure Use your head, don't abuse it!

1,036 posts · joined Jun 2004 ·

#693702
Andy wrote:Most T2's would struggle to pull 12" vac anyway, so braking is automatically lower 😂
Maybe with a belt driven vac pump ehehe.

not an amazing amount of vac on them really, is there.
Before I fixed the last lot of engine problems, at times it had positive pressure 😠

But it's all good now. Well, good enough anyway.
If at first you don't succeed. Build, build again.
Vehicle: 1975 Special order delivery walkthrough panel based LCA pop-top camper. Motor: Nippon 1.8L Single port Wasserboxer, Transmission: 3 rib 002.