need help - 964 big brake install

[Jeff Burger]

I am doing a big brake upgrade on a 90 C2. I read somewhere (on this forum I think) that I should up grade to the 993 master cylinder so I went out and bought one without doing any other homework . the 993 master does not appear to have any chance of working with the 964 Vaccum booster. for starter there is the obvious differnce in the design but not as obvious the seal diameter is smaller than the opening to the booster - I could use some help from someone who has BTDT.
Also I purchased the larger resevoir in the picture. how difficult is it to remove the securing piece across the bottom of the resevoir - any chance of damaging the resevoir ?

TIA
regards
Jeff Burger
845-590-5355

[Bill Verburg]

Go down to post #18 here

you need the following parts
993 vac can 993.355.023.10
gasket 993.355.301.00
bracket 993.355.163.03
and either 993 lines or adaptors.

lines and adapter sources
Classic tube

Plews-Edelman

Fedhill

p/v
use
964.355.305.10 55 bar stock on all 4 piston rear C2 & 964RS
or to get a little more rear bias 964.355.305.01 60bar, some remove the p/v entirely

the BMW 10mm to 12mm brake line adapter part #
34-32-6-752-405

[Jeff Burger]

Bill

Great info - I guess I didn't dig deep enough into old threads - thanks you so much

Jeff

[Bill Verburg]

Your car sounds great!!

here's the mc measurements

thanks!

[Jeff Burger]

Bill,
ok so I will never make it as a draft person - let me know if you need any other measurements

[Jeff Burger]

part # for the above 99335591000

[Bill Verburg]

Originally Posted by Jeff Burger

part # for the above 99335591000

Thanks!, that's perfect. You going to be at HV/ LRP next week?

[Jeff Burger]

unfortunately I will still be putting the car together