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Location: western queensland
Registered: September 2004
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master/booster upgrade to suit GT-R brakes
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Tue, 23 August 2005 09:33
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Does any one have any ideas about what to use to upgrade the master and booster on my SA63 for gtr nissan brakes front and rear?
Is there a supra or hilux of some description that has large capacity brakes that i could fit the master and or booster from??
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I supported Toymods
Location: Australia
Registered: November 2003
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Re: master/booster upgrade to suit GT-R brakes
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Tue, 23 August 2005 09:35
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Are these 296mm GTR brakes? or 324mm GTR brakes?
Measure the piston size.
For 296mm brakes the stock m/c is fine.
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Location: western queensland
Registered: September 2004
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Re: master/booster upgrade to suit GT-R brakes
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Tue, 23 August 2005 09:38
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do you mean discs? they are R33 gtst front and 32gtr stock rears
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I supported Toymods
Location: Australia
Registered: November 2003
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Re: master/booster upgrade to suit GT-R brakes
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Tue, 23 August 2005 09:41
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Well, sort of.
The series 1 R32 GTR uses 296mm discs and Sumitomo calipers, where as Series 2 R32 GTR and on use 324mm discs and Brembo calipers.
I know from comparing the MA61 brakes to Skyline 4 spots/2spots (non Brembos) that there is negligible difference in piston area, so a change in master cylinder is not required.
However, you had drum rears, so I'd suggest you get an MA61 master cylinder and call it a day.
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Location: western queensland
Registered: September 2004
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Re: master/booster upgrade to suit GT-R brakes
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Tue, 23 August 2005 09:46
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Cool, yes they are just the cheap sumitomo's, so what about the booster?
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I supported Toymods
Location: Australia
Registered: November 2003
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Re: master/booster upgrade to suit GT-R brakes
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Tue, 23 August 2005 09:47
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I doubt there is a different between the MA61 booster and the SA63 booster, but just for keeping it simple, use the MA61 booster too.
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Location: western queensland
Registered: September 2004
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Re: master/booster upgrade to suit GT-R brakes
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Tue, 23 August 2005 09:58
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San-chu haiiri krutch i will now be off on a search for an MA61 master etc.
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Location: Montrose, VIC
Registered: May 2002
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Re: master/booster upgrade to suit GT-R brakes
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Tue, 23 August 2005 13:33
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MX83 1 inch cylinder
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I supported Toymods
Location: Australia
Registered: November 2003
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Re: master/booster upgrade to suit GT-R brakes
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Tue, 23 August 2005 13:41
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Skyline pistons have less surface area than MA61 pistons, so no need to upgrade m/c
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Location: Perth
Registered: November 2004
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Re: master/booster upgrade to suit GT-R brakes
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Tue, 23 August 2005 13:45
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Supra A70 brake booster... might have to bend your pipes to fit but it'll be strong enough.
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Location: Montrose, VIC
Registered: May 2002
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Re: master/booster upgrade to suit GT-R brakes
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Tue, 23 August 2005 15:40
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I've played with a couple of sets of Nissan calipers, and find they feel soggy with less than a 1 inch cylinder, but it's a matter of what you like I suppose.
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Location: western queensland
Registered: September 2004
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Re: master/booster upgrade to suit GT-R brakes
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Wed, 24 August 2005 11:15
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i will need goodly brakes, my car won't be road rego'd.
will the MX83 mc fit up to the SA63 booster thats the next Q?
off to toyota at lunch for some research
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Location: western queensland
Registered: September 2004
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Re: master/booster upgrade to suit GT-R brakes
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Fri, 26 August 2005 07:55
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well after a wee play on the toyota parts files and a flick through a PBR catalouge i've come up with this.
MA61, SA63 etc have 23.81mm piston, same master cyl. and MX83 has ABS and diff. MC.
also Z32 nissans have 23.81mm piston too.
and i've finally found the resrtictor for the drum in the very front of the master.
Hopefully if i drill this out i'll be fine for brakes, well hopefully
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I supported Toymods
Location: Australia
Registered: November 2003
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Toymods Social Secretary
Location: Sydney
Registered: July 2002
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Re: master/booster upgrade to suit GT-R brakes
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Fri, 26 August 2005 12:41
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uzs131 is 1" too
funnyly enough - the ST205 brake MC is 15/16", but the brakes themselves are MASSIVE!!! Waaay bigger than any of the other toyotas listed above.
i think there is more to it than just bore diameter...
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Location: Kita-Ku, Sapporo, Japan
Registered: January 2003
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Re: master/booster upgrade to suit GT-R brakes
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Fri, 26 August 2005 13:20
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pedal ratio perhaps?
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Location: Adelaide
Registered: May 2003
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Re: master/booster upgrade to suit GT-R brakes
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Fri, 26 August 2005 14:39
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For reference, i use Hilux calipers on the Sprinter, along with a Mitsubishi Starion (15/16") master and the pedal feel is quite nice. Im switching to the Nissan brakes, simply for weight, but from driving a very similar setup car (15/16" and GTST brakes) the 15/16th seems pretty good.
Thinking of swapping in a R32 1" master to go along with it though.
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Location: western queensland
Registered: September 2004
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Re: master/booster upgrade to suit GT-R brakes
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Sat, 27 August 2005 05:02
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CrUZsida wrote on Fri, 26 August 2005 18:02 | Z32 Nissan should have a 1 1/16" master? At least the later ones should.
Stock is 15/16" yes, MA70 is 1"
EDIT: Z32 TT m/c are 1 1/16", or 26.98mm
And MX83 is 1" too.
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???? was i looking at a different catalouge????
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I supported Toymods
Location: Australia
Registered: November 2003
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Re: master/booster upgrade to suit GT-R brakes
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Sat, 27 August 2005 06:22
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Get the ATAP catalogue.
If its not on the site anymore, PM me you email addy and I'll email it over.
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