prop valve- 99-00 Si vs teg 4040?

[stmotorsports]

so what exactly is different about the 99-00 Si prop valve vs the standard teg 4040? I've got an 00 Si and the brakes have always sucked ass ever since I got the car. This is even after brembo blanks & hawk pads all around, new 15/16" mc, stainless braided lines, synthetic fluid & repeated pressure flushing/bleeding

wondering if swapping to the teg 4040 would make any difference

 

[99sidude]

No swapping the proportioning valve wont do anything. Upgrading to a teg master cylinder might; though I'm not sure if it is any bigger than an si MC. When's the last time you have bled the brakes? Air in the system will kill braking.

 

[stmotorsports]

have pressure bled the system repeatedly, it doesnt make any difference. The last countless times I've done it I didnt get any air out of the system at all, just made a mess and potentially contaminated a whole bunch of expensive ass
synthetic fluid.

i know quite a few other peeps with 99-00 Si's that say their brakes suck also

do you know for a fact that swapping prop valves won't do anything? have you personally tried it?

if they are the same I would think Honda would have just used the teg prop valve in the Si instead of designing and building a whole new part

I just picked up a 96 gsr, it has the 1" mc so I'm planning on swapping it to see if makes much of a difference and/or solves the problem

other than that, there's really not much else it could be other than the prop valve and/or calipers, everything else has been replaced

 

[99sidude]

All the proportioning valve does is regulate the pressure to the front and rear. Changing from a civic one to a teg one with the same ratio will do nothing for braking. The 1" MC will help out.