Brake Master Cyl Stopper

[BANGN]

People have been raving on about "brake master cylinder stoppers"

I have a R32, what exactly do they do and can I benefit from it?

[Basti]

they brace the BMC against the strut tower directly in front of it. as a result, the firewall doesnt flex when you stomp on the brakes (which it does quite a bit as standard). less flex = a less spongy pedal, and better brake feel because the energy in your foot goes through the brake system rather than be used in bending firewall

[PM-R33]

Yep they are a decent thing. Have been meaning to get one for a while. On a Supra I think they are a must, their bloody firewall flexes twice as much as what a Skyline does when you stamp on the brakes.

[Duncan]

just get someone to push the brakes hard while you watch the master cylinder move...it's pretty bad!

then consider that the pistons in the brakes themselves move about 3-5mm for all of the distance the pedal travels. If the master cylinder is moving 3-5mm as well that means there is as much flex as there is actual braking in your pedal movement!

[THENIG]

Brake master cylinder stopper + braided lines + 20y.o. ABS unit + 20y.o. master cylinder = Leaky ABS & leaky master cylinder.

I know most gtst don't have abs but if it does then expect it to be the weakest link if you fit one of these & hammer your brakes.

I'm not saying they are a bad thing, I thought it was great, I will put it back on once I rebuild the ABS with new seals, gave them heaps more feel through the pedal, more so than the braided lines.

Just saying that if your 32 is original & master cylinder is pretty shabby then keep in mind that down the line if it starts leaking you will know why.

[PM-R33]

Hmmm interesting, never thought of that. How much did it cost you to get the ABS rebuilt with new seals?

[bubba]

+1 for the master cylinder stopped and braided lines.

[BANGN]

good to know thanks for clearing that up. I have heard of the firewalls cracking with heavy duty clutches too.. lol

[bubba]

good to know thanks for clearing that up. I have heard of the firewalls cracking with heavy duty clutches too.. lol

Nah I think that's the pedal bracket they're talking about..