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Author Topic: Master Cylinder Replacement (Yup, again)  (Read 1574 times)

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Offline Mo

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Master Cylinder Replacement (Yup, again)
« on: September 24, 2012, 07:16:00 PM »
Hey All,

So the MC on my bike is crap (siezed, etc etc). I searched pretty relentlessly through previous post but I guess I still have questions. I'm looking for a suitable replacement. From what I understand, the CB500 needs 13 mm piston bores. I was wondering if anyone knew of any good sources (im in the US) for a suitable replacement (looks be damned).

I'm also fairly close to being over budget on this build so any cheaper alternatives would be nice.
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Offline LesterPiglet

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Re: Master Cylinder Replacement (Yup, again)
« Reply #1 on: September 24, 2012, 07:19:26 PM »
David Silver Spares sells pattern replacements damn cheap, as cheap as a Honda rebuild kit. I believe Silvers has a US site now.
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'Then' and 'than' are completely different words and have completely different meanings. Same with 'of' and 'have'. Set and sit. There, their and they're. Draw and drawer. Could care less/couldn't care less. Bought/brought FFS.


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Offline nitroeagle

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Re: Master Cylinder Replacement (Yup, again)
« Reply #2 on: September 24, 2012, 07:50:03 PM »
I used one from a dual sport bike. Most have 7/8 bars & disc brakes. I didn't check bore size, but works fine. I haven't had any problems. Plus they're usually smaller, have threads for a mirror, & all metal(don't have to worry as much about leaks). Just a thought
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Offline Mo

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Re: Master Cylinder Replacement (Yup, again)
« Reply #3 on: September 25, 2012, 07:10:51 AM »
Both are great suggestions. You mentions that DSS has a US site now. Is there a link or is it the same as the .uk site?
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Offline flybox1

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Re: Master Cylinder Replacement (Yup, again)
« Reply #4 on: September 25, 2012, 07:34:03 AM »
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline xnoahx

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Re: Master Cylinder Replacement (Yup, again)
« Reply #5 on: December 07, 2012, 09:15:48 PM »
I just put the one from David Silvers Spares on my 78.  It works well and looks dang near stock.  I just need to figure out how the brake switch works on this one because the one from my old master wont work with this new one
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Offline davis96

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Re: Master Cylinder Replacement (Yup, again)
« Reply #6 on: December 07, 2012, 09:20:06 PM »
Quote from: malkaysi on September 25, 2012, 07:10:51 AM
Both are great suggestions. You mentions that DSS has a US site now. Is there a link or is it the same as the .uk site?
www.davidsilverspares.com
(instead of .co.uk)
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'74 CB350F - sold
'71 CB500K

Offline Felix

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Re: Master Cylinder Replacement (Yup, again)
« Reply #7 on: December 08, 2012, 05:14:47 AM »
What happens if you put a bigger MC on your bike without changing anything else?
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Honda CB500F '72 in progress

Offline Chachi

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Re: Master Cylinder Replacement (Yup, again)
« Reply #8 on: December 08, 2012, 09:53:50 AM »
I have this same  one:
http://www.davidsilverspares.com/CB500K1-FOUR-1972/part_123893/

Works great, looks stock. If you get one and want your clutch lever to match to brake lever that comes with it:
http://forums.sohc4.net/index.php?topic=110373
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73 CB750 K3
72 CB500 K1 - Sold
75 MR50 Elsinore K1
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