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-   -   Clutch Master Cylinder Options? (https://www.rx7club.com/1st-generation-specific-1979-1985-18/clutch-master-cylinder-options-856719/)

jonathan_ed3 08-10-09 08:50 PM

Clutch Master Cylinder Options?
 
I need something heavier duty than the stock clutch M/C.

Are there any bolt-in, or minor mods required clutch M/C's that can go into these cars?

I searched but didn't find anything specifically relevant.

Jeezus 08-10-09 09:20 PM

Look around for threads by Trochoid. I believe it is him who has done it, but someone on here has used a 2nd gen MC. Not sure if it is heavier duty or not, but it's something to help you on your search.

trochoid 08-11-09 12:00 AM

Clutch master, sorry, no, I have managed to install an FC brake master as part of my big brake upgrade though. Still trying to figure out how to assemble the rear brakes. Not having much luck with those.

dantheman 08-11-09 11:43 AM

I just replaced mine this weekend. Used the cheep one from napa and it works fine with the stock clutch. Just a PITA to get in and out of the car. I hate reconnecting that dang pushrod.

thunkrd 08-11-09 12:48 PM

just a quick question. what kind of mods are you running that makes u need it upgraded?

jonathan_ed3 08-11-09 06:48 PM

I'm using a very heavy clutch/PP setup. I don't want to risk it using a stock M/C.

I'll see if I can retrofit a Wilwood setup. Was hoping someone had already one it!

elwood 08-11-09 07:03 PM

Are you more concerned about the pedal effort or the ability of the OEM M/C to handle the pressure? If it's pedal effort, you'll want a smaller bore M/C to bring it down -- but you'll have more travel, everything else being equal. If you're worried about the OEM system handling the pressure, I'm running an ACT extreme pressure plate and 6-puck disc combo, which is supposed to be good for approx. 500 ft-lb of torque. The pedal effort is much higher, but the M/C seems to be holding up just fine. The internal design is similar to that of a brake M/C so it may be able to handle a lot more pressure than it usually sees.

bwaits 08-11-09 07:13 PM

All your master cylinder does is operate the slave cylinder. Unless you are changing that as well then there isn't a need. Pretty simple parts. The master displaces the correct amount of fluid that the slave requires to extend fully. People have been using the stock parts on HD clutches for decades without problems.

-billy

mattreeve 08-11-09 11:21 PM

simple upgrade, install a steel braided clutch line for added confidence


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