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FD Master Cylinder Ports: Does it matter which side is which?
I've done a few searches and can't seem to get a solid answer so hoping to get further thoughts on this topic.
I have Alex Rodriguez's ABS delete kit and before installing I would like to clarify the ports on the master cylinder and if they are specific to front and rear. In the kit's installation instructions it says the Front Port of the master cylinder is for the rear bakes, and the "Side port" is for the fronts.
But other posts I have read here, and the lines I traced on my own (RHD) FD, seem to suggest that the front (i.e. more toward the front of the car) port is for the front brakes and the rear (i.e. closest to brake booster) port is for the rear brakes. This seems to be the same for LHD and RHD? But I could only personally verify on my RHD.
On the other hand, there are also reports of folks installing ABS delete kits front-port to rears and rear-port to fronts, and it working just fine (with a proportioning valve properly set up of course).
So I guess the better question is, does it even matter which master cylinder port goes to which end of the system? (as long as the proportioning valve is in line with whatever goes to the rear?)
Thinking about it..... it doesn't matter because its a split cylinder on the inside. there's nothing differentiating the "front" from the "rear". the piston moves forward and aft and moves fluid in the process. When we made our kit, we simply followed the designation in oem form with the front being the front and the rear being the rear. for continuity and logic, having the front as the front and the rear as the rear makes the most sense. to answer your question, based on how the master operates it should make no difference which port is assigned front or rear. the piston will slide and move fluid as intended.
Hey thanks for the feedback. Your thought also seems to be supported by the brake force distribution chart in the FSM. Prior to reaching the knee point (where pressure starts to be reduced at the rear) the front and rear brakes look to get pretty much equal pressure (line from 0 to A-A').
