• Hey Guest!
    British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
Tips
Tips

master cylinders

Share this page

oxford

oxford

Jedi Hopeful
Offline
Hi everyone
I am trying to work out what size master cylinders to use on my late model BN4. The originals are 3/4" brake, 5/8" clutch. Can I use the same size on brake and clutch? Ie: 3/4 or should I go with original sizes?
Thanks
Matthew
 
At least if you have the original drum brakes, it won't work with the smaller brake cylinder 5/8. I would use the original sizes for both, clutch and brake.
Regards Christian
 
Not much reason to deviate from original unless you've made other changes to the system like different sized wheel cylinders. MCs can be changed to affect pedal feel, but you run the risk of changing pedal travel and in extreme cases can end up having insufficient hydraulic fluid capacity to operate the system.
 
Back
Top