Clutch Pedal master cylinder size

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Mikey_Boy
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Location: Cheshire - trying to avoid the bling!

Post Tue Dec 02, 2014 11:50 am

Hi Folks,

Does anyone have a size (bore size) for the CLUTCH master cylinder for an M3 please? Not the slave cylinder, but the master cylinder that attaches to the pedal.

Also, does anyone know the pedal ratio for the clutch pedal - I think it might be 4:1 like the brake pedal, but any confirmation is appreciated!

Many thanks!

:thumb:
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Motorhole
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Post Tue Dec 02, 2014 12:23 pm

RealOEM lists it as 19.05mm. I assume this is the internal diameter - almost exactly 0.75". I can't confirm the pedal ratio though I'm afraid :)
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Mikey_Boy
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Joined: Sun Mar 16, 2008 11:00 pm
Location: Cheshire - trying to avoid the bling!

Post Tue Dec 02, 2014 1:59 pm

Thank you!!! :thumb:

That makes sense - I can't imagine the pedal ratio being far away from 4:1. The pedal box I am looking at is adjustable for pedal ratio on the clutch so with that m/c size, I should be able to play... :D
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HairyScreech
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Post Tue Dec 02, 2014 8:51 pm

I think all E30 masters are the same. The slaves are something like 20 or 22mm with only the e36m3 having a larger one.
2.8 development thread http://www.e30zone.net/modules.php?name ... c&t=170822

m3.3.1 m20 thread - now running, chip needed - any volunteers?
http://www.e30zone.net/modules.php?name ... =viewtopic&
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