Question for you brake technical experts
Thread Starter
Pro
Joined: Aug 2007
Posts: 562
Likes: 2
From: Jacksonville FL
I'm sorry, but I don't understand. If you convert standard brakes to Z51, all you need is the larger brackets to push the calipers further away from the stock position to accomodate the larger rotors. And of course you would buy the larger size rotors. That is what I have done and it works fine. So why to the rear calipers need to have smaller pistons? I just don't get it.
Team Owner
Joined: Sep 1999
Posts: 41,732
Likes: 1,718
From: Springfield MO
I'm sorry, but I don't understand. If you convert standard brakes to Z51, all you need is the larger brackets to push the calipers further away from the stock position to accomodate the larger rotors. And of course you would buy the larger size rotors. That is what I have done and it works fine. So why to the rear calipers need to have smaller pistons? I just don't get it.
Safety Car
Joined: Sep 2007
Posts: 4,359
Likes: 6
From: Los Alamitos California
St. Jude Donor '09
I'm sorry, but I don't understand. If you convert standard brakes to Z51, all you need is the larger brackets to push the calipers further away from the stock position to accomodate the larger rotors. And of course you would buy the larger size rotors. That is what I have done and it works fine. So why to the rear calipers need to have smaller pistons? I just don't get it.
I'd give you my opinion that Z51 rotors aren't an upgrade, but that's another thread.
San
Thread Starter
Pro
Joined: Aug 2007
Posts: 562
Likes: 2
From: Jacksonville FL
Thanks. So it is for brake bias then.
And I agree that the Z51 rotors aren't much of an upgrade. However I went with the Z51 size DBA slotted rotors for the track. I figured the bigger the rotor, the bigger the area to disipate heat. For the street I just put on my HPS pads with the crappy drilled Z51 rotors.
And I agree that the Z51 rotors aren't much of an upgrade. However I went with the Z51 size DBA slotted rotors for the track. I figured the bigger the rotor, the bigger the area to disipate heat. For the street I just put on my HPS pads with the crappy drilled Z51 rotors.
Race Director
Joined: Jan 2005
Posts: 10,924
Likes: 854
From: Daytona Beach FL
Thanks. So it is for brake bias then.
And I agree that the Z51 rotors aren't much of an upgrade. However I went with the Z51 size DBA slotted rotors for the track. I figured the bigger the rotor, the bigger the area to disipate heat. For the street I just put on my HPS pads with the crappy drilled Z51 rotors.
And I agree that the Z51 rotors aren't much of an upgrade. However I went with the Z51 size DBA slotted rotors for the track. I figured the bigger the rotor, the bigger the area to disipate heat. For the street I just put on my HPS pads with the crappy drilled Z51 rotors.
Yeah, the rotors are just heat sinks, so bigger should be better!!
The Z51 rotors are larger in diameter than the base C6 rotors:
Base.....front 12.8 inch rear 12 inch
Z51......front 13.4 inch rear 13 inch
I think the slightly smaller pistons in the Z51 rear calipers is for tweaking the bias, but I don't know why that's required at all.
The C6 has DRP (Dynamic Rear Proportioning) and that should easily be able to compensate without requiring a small difference in the pistons.
You shouldn't have any problems at all running the non-Z51 rear caliper with the Z51 rotors.
C'ya during the Rolex 24!!
Bob
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