Cusco brake cylinder stopper

[Supreme]

Anyone using this? Any difference made? I just did a rotor/pads/lines change on my 240sx and am not too happy. Maybe I expected more than I shouldve. Anyway I was told that this makes a notable difference, any feedback from those who have/had it?

[FRpilot]

what is it suppose to do anyways? besides looking pretty in blue?

[Supreme]

(supposedly) prevents flexing of the mbc, but I wonder myself if its all bling...

[FRpilot]

flexing of the mbc.. from what? the forces of your foot to the pedal possibly moving the bmc.

[projectRDM]

You guys can't be serious. This is one of the most common, well known things about a car, period.

Have someone sit in your car and press the brake pedal firmly and watch the booster/master cylinder. The firewall will flex a little from the pressure. You can visually see it move a little forward, then retract when the pedal is released. Same as if you pressed against a quarter panel with your foot, the pedal is only mounted to hold it in place, the sheetmetal used in the bracket and the firewall are both thin enough to allow for plenty of unwanted flex.
The master cylinder stopper bolts the shock tower (where the steel is a little thicker) and has an adjustable pushrod to press against the cylinder, keeping it from moving. It works, several of the guys I autocross with have built makeshift versions. The only issue with the Cusco is it's for a RHD car, there aren't the same mounting provisions on a LHD car's shock tower for it. It's adaptable, but for the money you can make one that works just as well.

[AutoRnD]

the only thing is...
with the flex eliminated..
beware that you may rip the pedal right off..
been there done that...
but then again i am superman =)

[upSLIDEdown]

You guys can't be serious. This is one of the most common, well known things about a car, period...

+1.

I really watched it when I bled my brakes after doing my Z brakes/Z bmc swap. It definitely moves, quite a bit actually. But like Russ said, all the stoppers I've ever seen are for RHD, not LHD. It wouldn't be that hard to make one, I plan on doing it, just haven't found the time yet. Pop your hood and get someone to sit in your car and give the pedal a firm push, you'll see it.

Bryan

[Supreme]

I was serious since I did not know (personally) how it worked, but thanks for answering my question :)

Is a lot of modification needed to make the rhd work on our lhd?

[projectRDM]

I was serious since I did not know (personally) how it worked, but thanks for answering my question :)

Is a lot of modification needed to make the rhd work on our lhd?

Not really. Basically you'll set it where it needs to mount, then drill the tower and use spacers behind it to set it flat against the MC. It's designed to sit flush against the tower and IIRC there's a few ridges in the same place on the other side. Your main concern is to get it as flat against the tower as possible, maybe even go as far as to cut a plate and sandwich the shock tower for more rigidity.

[theicecreamdan]

flexing of the mbc.. from what? the forces of your foot to the pedal possibly moving the bmc. haha.

the forces of your foot are multiplied by the lever the brake pedal is attached to.