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Old 06-06-2019, 04:17 PM   #199
FOMOCOAU
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Join Date: Feb 2019
Posts: 4
Default Re: Definitive AU1 to AU2/AU3 brake upgrade thread

Quote:
Originally Posted by ebv8 View Post
i just put on AU2 brakes on my AU1 and I can confirm the stock master cylinder does a fantastic job with no issues with a longer pedal at all
my AU1 is a March '99 build and I read that in May '99 they all got the revised larger master cylinder to help with long spongy pedal feel when hot
how can i tell if mine has the larger master cylinder? its 100% and never been touched before


also i'm going to fit a full set of PBR upgrade brakes once i get my 17in wheels refurbished as they don't fit under my 15's currently
the fronts i know will just bolt on but how about the rears? will the caliper bolt onto the live axle rear of my AU1? if so is it just spacers i need? and what size? they are 328mm x 26mm wide where as the AU1 is 287 and 10.5mm wide
or should i sell the upgrade rear calipers and just fit BA-FG rears with 303mm x 16mm rotors and forget the vented rear calipers, the AU is alot lighter than any BA-FG anyway
I have done a s1 to s2 front swap on my sept 99 xr8 previously..now wanting to upgrade to ba rotors and calipers. is there anything else required for this swap? tia.
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