[JMBO]

Wilwood Tandem master cylinder question
Trying to spec out a master cylinder for my "A" coupe. Am running Mustang II front discs and Jaguar center mount discs in rear and hope to run a manual master. Have read a lot of posts on the subject of master cylinder bore sizes for a manual application. My question has anyone had experience with the Wilwood Tandem Remote master cylinder in a similar application. The 1" bore seems to be the one that is most readily available. Is that best of should I go for 7/8"?

[cucumber1949]

I had the 1" initially on my T-Bucket, then changed the pedal ratio, and then went to the 7/8". The car has 11" disks up front and drums on the rear so there is plenty of stopping power. These changes all reduced the pedal effort as well as finally 'softening' the pedal for an overall nice feel and effort. I always warn those that want to drive the car that these are not power brakes so be ready - most folks have no experience with manual brakes or don't remember what they were like years ago - expect that just resting your foot on the pedal like they do in their daily driver is enough to stop the car.

However, the proper deteriming factor is the disk caliper volumes you'll be running front and rear and how those match up to what the master will provide. I believe that once you verify the volume requirements, then you can address the bore size.

[JMBO]

Thanks for the info. What did you finally go with for a pedal ratio?

[cucumber1949]

Came out to 5:1 on the pedal ratio. Could have done more by fabricating new parts, but it worked out okay with what I had.