17mm or 19mm Options

[ynotdd]

pro's and cons of a 17mm or a 19mm mc. I know there was talk about it but dont remmber the out come (IMG:style_emoticons/default/spank.gif)

[ArtechnikA]

pro's and cons of a 17mm or a 19mm mc. I know there was talk about it but dont remmber the out come...

what kinda car you got? what kinda brakes? what are you going to do with it ?

stock /4, even a 2,0, with stock brakes, and stock-ish wheel and tire combinations, in street (not necessarily mountain) driving applications, 17mm will work fine. for track use, you -may- find yourself at the hydraulic volume limit, if you use the brakes a lot (so don't do that) especially with two drivers. depends on the track, too ...

last time i checked, the 19mm MC was cheaper, but not by a lot.

19mm was standard on the 914.6, which ran bigger piston calipers front and back. when i increased front caliper size even beyond that, in went from the OEM 19mm MC to a 23. in my 911, the OEM MC was 20,5mm and i'll be replacing that one with a 23mm too.

i like a firm pedal and i accept that it may be trickier to modulate than a smaller MC.

IMHO - it's not worth agonizing over. a MC will cost you $100 and a weekend. make your best guess on what you think you'll like, and if it turns out you don't like it, yank it and put in the other one.

but - lots of MC's have been replaced at least once by now - so you may or may not know what you're running in the car unless you've had it since new or replaced it once yourself already. the size is cast on TOP of the MC, so it may take some clever work with dental inspection mirrors to know what you've got now before you pull it out. more than a few people thought they'd be 'upgrading' to a 19mm MC only to discover some long-ago prior-owner thought that too ...