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#2
15th May 2011, 12:20 PM
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What is the diameter of the E34 master cylinder compared to the sierra one? Have you checked the hydraulic ratio compared to the original sierra setup?
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#3
15th May 2011, 02:43 PM
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To answer all 3 questions:
1. No there's no spongeyness, brakes all bled nicely. 2. EBC Greenstuff pads all round 3. Don't know the dia of the ATE master cylinder - still trying to discover that. I' slightly embarassed to say I don't know what you mean by hydraulic ratio - could you explain please? Thanks!
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#4
15th May 2011, 03:01 PM
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Ok - after lots of digging through BMW websites, I've found the master cylinder is 25mm diameter.
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#5
15th May 2011, 05:38 PM
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No expert either but would suspect its the mixture of components that dont match and cylinder/piston and m/cyl bore sizes are incompatable.
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Cost : Little as possible. Thanks : To those who by their generosity my build has progressed. Its a handmade sports car not a flaming kit car !!! If at first you dont succeed,avoid skydiving... No parachute require to freefall,only if you want to do it twice.
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#6
15th May 2011, 06:13 PM
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I've been busy with my calculator (well excel to be exact)
Making some simple assumptions - BMW master Cylinder 25mm diameter Ford master Cylinder 22.2mm diameter Ford Caliper Piston 54mm diameter If you assume that a force of 100lbs (45kg although that is not strictly a force before anyone says anything!) is applied to the master cylinder, then for each combo the force at the pad would be in the region of - BMW MC 466lbs Ford MC 591lbs So basically with the BMW master cylinder you are only seeing about 78% of the pad clamping force you would with the ford unit. Hope that is some help.
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#7
15th May 2011, 07:43 PM
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Makes a lot of sense David,add the size of the rear brakes to the mix and Bobs your uncle.
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Cost : Little as possible. Thanks : To those who by their generosity my build has progressed. Its a handmade sports car not a flaming kit car !!! If at first you dont succeed,avoid skydiving... No parachute require to freefall,only if you want to do it twice.
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#8
15th May 2011, 10:23 PM
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Quote:
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#9
15th May 2011, 10:37 PM
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im not sure greenstuff are that great either.... mintex 1144 and 1155 always seem to come much more highly rated on my vx220turbo.
I have used EBC black, green and reds. Reds were good with a bit of warmth in them. Green not impressed with, black were good for a road pad.
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