Which Master Cylinder?

[Rod Dittmar]

I have an RCR40 with the RCR supplied Tilton Pedal Assembly and the Wilwood 6 piston front & 4 piston rear calipers. RCR also supplied one .88" & two .75" Wilwood master cylinders. I'm also using the Safir Twin-Disc Clutch Package along with Wilwood 150-8854K brake pads. Plans for this car are for it to be street driven only. Question: Which one of the master cylinders do I use for the clutch and also for each of the front & rear brake systems?
Rod

 

[Ron McCall]

I have had great success using the .75" cylinders for the F&R brakes and the .88" for the clutch.


Ron

 

[Rod Dittmar]

Ron, thanks for the reply. That's kind of what I thought. However, there's also some rather conflicting/confusing opinions on this forum about that. Just thought I'd ask.
Hope you're somewhere nice so you can get out in a car this weekend. Sunny and 70 here in S.E. Michigan. Maybe I'll dust off the Cobra.
Regards, Rod

 

[JP Verweij]

My OBP bias pedalbox came with 0.7 rear brakes and 0.625 front brakes and 0.625 clutch. (Right to left)
I swapped the clutch for a 0.75 to get more stroke on the clutch slave as that seemed to be usual on a GT40.
But I am still in the build and have not driven it.
Jaguar XK / XJ6-12 brake callipers all around as per KVA "B" specs

All I found through google it apears usual the have a bigger master on the rear brakes.