DRM adjustable Brake Master Cylinder - Talk me into it
#1
Burning Brakes
Thread Starter
DRM adjustable Brake Master Cylinder - Talk me into it
So is it worth the $600? I'm track only, and am in the middle of a complete ground up rebuild, readying the car for ST2 next year. I was considering ditching the ABS altogether and going with proper racing pedals, but since Phoenix tuned my suspension in April the trail braking issues I was having with ABS on were solved. So if I'm gonna keep the ABS, should I just bite the bullet and get it? Running Wilwood SL-6 with Poly H and Coleman 2 piece up front, and stock calipers, Wilwood H and frozen rotors in the rear. Talk me into it, or out of it.
Thanks
Thanks
#5
Drifting
No, but they added dynamic brake proportioning to the 2001+ abs system. With those you don't need the adjustability of the DRM part.
I've got the SL6Rs on the front and find the brakes to not be as firm as I'd like - I'd like to increase the M/C diameter just a tad.
I wonder if DRM will/can sell the larger diameter master without the proportioning valve?
I've got the SL6Rs on the front and find the brakes to not be as firm as I'd like - I'd like to increase the M/C diameter just a tad.
I wonder if DRM will/can sell the larger diameter master without the proportioning valve?
#6
Burning Brakes
No, but they added dynamic brake proportioning to the 2001+ abs system. With those you don't need the adjustability of the DRM part.
I've got the SL6Rs on the front and find the brakes to not be as firm as I'd like - I'd like to increase the M/C diameter just a tad.
I wonder if DRM will/can sell the larger diameter master without the proportioning valve?
I've got the SL6Rs on the front and find the brakes to not be as firm as I'd like - I'd like to increase the M/C diameter just a tad.
I wonder if DRM will/can sell the larger diameter master without the proportioning valve?
At any rate, I have had it in my car for 2.5 yrs and now able to get the rear brakes to work much better. I also know some of the C6 Z06 folks are using it and like it too.
The pedal is nice and firm.
BTW - I'm not doubting your comment about 2001 up adding the dynamic proportion valve.
#7
Melting Slicks
I have been running it, great peddle, feels alway firm, always in the same spot
#8
Burning Brakes
Thread Starter
I don't see how the dynamic proportioning would have anything to do with it, as it simply reacts to conditions? The adjustable valve will dictate the initial bias at the onset of braking.
#9
Burning Brakes
If you keep the ABS you can simply find yourself a new M/C for a GMC truck application. That's basically what the DRM unit is with a rear proportioning valve added on. ABS sets your proportioning so you don't need that. The bigger piston will give you more fluid volume and therefore better pedal feel and response.
#10
Drifting
If you keep the ABS you can simply find yourself a new M/C for a GMC truck application. That's basically what the DRM unit is with a rear proportioning valve added on. ABS sets your proportioning so you don't need that. The bigger piston will give you more fluid volume and therefore better pedal feel and response.
#11
Burning Brakes
I actually located this a while back but never ordered one. I will take a look again because I am going to replace mine as well. I believe its the same part as a 2002 GMC Crew Cab Dually.
#13
Burning Brakes
I think the only issue COULD be clearance of the fluid reservoir with the hood. I think in that case you could retrofit the old reservoir. If you get yours done before me please let us know here how it worked out.
#14
Burning Brakes
Have one going in a C6Z with AP stuff. Might take a little while to dial in the rear bias, But Ive heard good reviews. Will try it out at Track Attack
#15
increasing m/c bore from 1" to 37mm without increasing the caliper piston bores will make the brake pedal extremely firm. Going up 1/16"-1/8", without changing anything else in an otherwise stock or stock replacement brake system will make for a great pedal, but beyond that I'd bet the driver may not like the feel. Especially on the street.
#16
Burning Brakes
That statement seems reasonable but I thought the whole intent of this thread was to discuss upgrades to compliment a BBK on a dedicated track car- hence my suggestion.
#17
Drifting
increasing m/c bore from 1" to 37mm without increasing the caliper piston bores will make the brake pedal extremely firm. Going up 1/16"-1/8", without changing anything else in an otherwise stock or stock replacement brake system will make for a great pedal, but beyond that I'd bet the driver may not like the feel. Especially on the street.
Can anyone confirm the corvette M/C is 25.4mm? If so, does anyone make a 28-29mm replacement?
#18
Drifting
If you keep the ABS you can simply find yourself a new M/C for a GMC truck application. That's basically what the DRM unit is with a rear proportioning valve added on. ABS sets your proportioning so you don't need that. The bigger piston will give you more fluid volume and therefore better pedal feel and response.
Great upgrade.
#20
Safety Car
The mega bore size would make it more like a "real race car" where you brake on pedal pressure and not pedal movement. But the brake/gas pedals are not really situated well for that and exerting 150lbs of force on the brake pedal takes getting used to but does allow for good modulation, once you get used to dealing with those pressures. But there is less of a need for fine modulation with ABS.