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I was reading the archives and i was wondering what the size is for the 1982 turbo zx master cylinder. is it the 15/16 or 7/8? i put this on my 240z when i did my brake conversion, and i wanted to check this out because i think im going to need to change my brake booster soon. any suggestions on which booster to use with this master cylinder. is there a better combo to use? i currently have the 4X4 front vented brakes with the 280zx turbo rear disc brakes. thanks in advance.
 

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This "upgrade" to a ZX master cylinder requires more pedal pressure to stop the car.. I don't see how that is a good thing but people suggest doing this all the time. I tried it and went back to the 7/8 Z master cylinder. YMMV

On the booster, as I recall there isn't enough room on the firewall to use anything but a 240 booster on a 240. I won't swear to this but it seems we had a rebuilt 280 booster on the shelf and had a 240 in the shop and it wouldn't physically fit.
 
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