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Author Topic: Master Cylinder Upgrade  (Read 1899 times)

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nobrakes

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Master Cylinder Upgrade
« on: September 10, 2005, 07:05:55 AM »
Does anyone have any recommendations on replacing the original master cylinder on a '75 CB400f with a more current model master cylinder?  If anyone has performed this mod, did you notice an improvement in braking power?

Thanks!
Scott
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Offline MikeDeB

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Re: Master Cylinder Upgrade
« Reply #1 on: September 10, 2005, 07:45:54 AM »
A friend of mine installed a Magura MC on his 73 CB750 with good results.  He had a slight improvement in braking power but the biggest improvement was in lever feel.  The OEM MC has a rather wooden feel to it whereas his Magura does not.  You can get Magura MC's at Mike's XS650.

http://www.mikesxs.com/
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Mike (Old SOHC/4 #2641)
Holt, MI
71 CB750K1
72 CB750K2
72 CB100K2
97 Ducati 900 SS/SP w/FCRs
98 Ducati 750 Monster w/FCRs
80 SR500

"Growing older is inevitable, growing up is an option."

Offline chrometank

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  • Posts: 197
  • cb750 1976 owned 33 yrs
Re: Master Cylinder Upgrade
« Reply #2 on: September 10, 2005, 10:01:10 AM »
I put a m/c from a  96  cbr250rr on my 750 and it feels great,i dont think its improved stopping power but the feel of the lever has improved 110%
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Buffo

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Re: Master Cylinder Upgrade
« Reply #3 on: September 10, 2005, 10:16:21 AM »
i put a nissin 14mm m/c on my 750k8...works great and looks 100% better
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Offline GeoffT

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Re: Master Cylinder Upgrade
« Reply #4 on: September 10, 2005, 10:19:26 AM »
My 550 had a yamaha cylinder on it when i bought it. Couldn't tell you if it improved the breaks but the bike does stop eventually. ;D

I'm thinking of gettin one of those chrome covers so i don't have to look at the Yamaha one. Anyone know where you can get them?
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Offline ericstew

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Re: Master Cylinder Upgrade
« Reply #5 on: September 10, 2005, 10:41:44 AM »
I use a 92' Yamaha 900 brake master cylinder.Actually,the Honda handlebars and brake sytem screw are standard metric size.Virtually you can use any Japanese master cylinder.Even a 2005 model can fit!
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nobrakes

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Re: Master Cylinder Upgrade
« Reply #6 on: September 10, 2005, 02:41:07 PM »
Great, thanks all for the info!  May look into the Nissin 14mm unless someone out there has another working m/c their willing to part with...  ;)
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eldar

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Re: Master Cylinder Upgrade
« Reply #7 on: September 11, 2005, 11:08:33 AM »
hell just ebay it. You can get a used one that will work fine. You may need to rebuild it but that is still cheaper than a new master in most cases.
It may be different for the metric "cruisers" but I think all metric bikes have 7/8 inch handle bars.
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