I have the B15 MC which in this case is Nabco same as my U13 MC, both non-abs.
With the Wilwood 4-pots up front, they work great. The rears need to be toned down just a little bit, as under really hard braking they will sometimes lock briefly. Too much rear bias by a very small amount. If you're not using the car for track or autox, it's unlikely you will care. If you have to brake hard from 100mph before a corner, you might not like what happens.
I plan to find a variable PV solution for the rear, and as this was written up in SCC and I have found it rings very true:
Quote:
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Originally Posted by Project Nissan Sentra SE-R - Boxcar Vs. Jellybean
Trying to scrub 50mph at the end of the short straight is terrifying. Sadly, the brakes we just installed aren't working as hoped. Initial bite is great, but the harder you push, the more things get numb and spongey. There's a moment of terror, as you wonder if the car will actually slow down, then surprise rotation as you realize the rear brakes have been locked for the last 100 feet and you're turning your new R-compounds square. Blame the pads for this one.
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As DC recommended in his article, I am swapping to the Ferodo DS2500's now. I did not like the Hawk HPS; besides lacking in both initial bite and higher temp operation, they threw a nasty rust colored dust I found very hard to get out of the black finish of the Motgei Traklites. Possibly if the front works more effectively I won't see this behavior in the rears. At normal speed for autox, they just lock a touch with can be good or bad, but from higher speeds, both rear wheels will lock if you push down hard, even briefly, that sucks especially if your car is not going perfectly straight down the track.
I think there's going to be more to it than just better front pads, the rears have larger swept pad area and they sit further away from the center of the axle, even with crap pads I think they bite a little too much with the U13 MC PV's with stock line pressures:
B13
SE-R (F)782 (R)356-412
U13 MC
non-ABS (F)782 (R)356-412
I'll be looking for a variable PV soon I think, give the new Ferodos a chance first. Pedal feel is excellent as the pads and rotors broke in, DC had to use them day or less after installing them in really hot weather, and was not running a hi-temp brake fluid like Motul.
Oh, and if you use 11.0" Corrado rotors with B13 hubs, you need spacer rings from Fastbrakes. Ask me how I know...you'll want these or your rotors will cinch down not quite centered, you can imagine how that works out:
Dave Coleman did a pretty thorough writeup here and on the rears in the next installment:
Part 9: In The End, You Always Have To Stop - Project Nissan Sentra SE-R - Tech
And Greg V still has B13 plain, slotted, slotted/dimpled, the whole slew of B13 rear rotors already setup for 4x100 and 258mm x 9 mm (or more, that's the plain version). I also really like the lines he carries, they are great, hard to believe anything beefier than Goodbridge, but they are.
