Big Reds installed, but now what master cylinder to use?

[BuG60]

I se people using 944, 944 turbo, even read about someone using stock, but what mastercylinder should I use to replace the stock one for my 993 turbo brakes?

[BuG60]

bump.......

[LLVWGL]

I would go at least with a 944 MC, it really depends on how much fluid you need to displace at the MC.

[70Ghia]

Use the 944 m/c, its tandom design should give you all the brake pressure you need without any problem. I'm using the MBT set up for my 996 calipers.

[BuG60]

MBT setup??
and which 944, turbo or non turbo?

[70Ghia]

Go to MBT.de and you will see my set up posted on their web page.
MBT is one of the brake tuning companies here in Germany. They liked my set up idea and used it
If you can get a hold of him "Uwe" is the man to chat with.

[70Ghia]

And I used the non-turbo m/c

[VRSICK]

do you think i'll be ok with stock for now, cause i have a show coming up very soon, and the car still has to get painted.....

[BuG60]

Sorry, BuG60 and VRSICK are the same people, me....

On my laptop it uses my old name.
Question remains though, the stock MC is installed right now, and I think i'm gonnah have to stay with it, atleast until after it gets painted, and after my first car show coming up in july. But after that, I will NEED to replace it with something else.

PS, MBT.de doesn't have anything there....

[MattKab]

It's not pressure you need to worry about, it's f/r bias (of pressure) and fluid volume displacement that needs looking at. The pressure is simply proportionate to applied pedal effort.

The stock m/c works* with most 'big' calipers because the orignial drum brakes have no self-adjustment to compensate for wear. They rely on the long stroke of the m/c.

You will be able to tell if your m/c is big enough if you bleed the air out by the pedal method.


* 'works' in terms of volume but not necessarily in bias

The sure way to know if your system works as a system is to have them tested on a plate brake tester, just drive on, hit the brakes and let strain-guage technology interpret the reaction of the road.

I'd be looking at the m/c off a T2 before that off a 944

Matt

stock '03 m/c with 40/36mm and 30/28mm 951 Brembo's + an AREX