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Shannon I must say that if I was at this same juncture, and if I had a choice of mc's(as in not already totally committed to a 19mm), I would opt for the OE 17mm, even with the BMW upgrades in front. Based on my experience and the basic physics of it, it has always appeared to me that the 19mm requires more pedal pressure to accomplish what the 17mm is doing already. (assumes good working mc's)
What the 19mm does contribute is it moves a greater volume of brake fluid, which is not something you benefit from with your setup(assuming street use only), even with the BMW calipers. There is a 23mm Mercedes mc that will also bolt up(with modification to the ears?) to the 914. A 23mm would require even more pedal pressure and move an even greater volume of brake fluid. Is the difference in pedal effort between the 17mm and the 19mm perceivable to everyone? Maybe not. But if just the price of the 19mm is higher I couldn't see getting one here.
Does anyone have more input on this? This is a perception based on numbers I've seen and my own experience. Are there other detriments with the 17mm or benefits with the 19mm on the brake setup above?
Paul
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