Have been looking around for some info on this setup, but I can't find any.
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Nothing too special there.
Those are stock calipers, right?
Previous owner just decided to mount a second pair to the unused mounting tabs that are normal for all rear uprights.
Some owners when upgrading to calipers without parking brake systems, keep the stock calipers for the parking brake portion.
Larry
Those are stock calipers, right?
Previous owner just decided to mount a second pair to the unused mounting tabs that are normal for all rear uprights.
Some owners when upgrading to calipers without parking brake systems, keep the stock calipers for the parking brake portion.
Larry
Your better off switching to a modern caliper that has a larger piston size and friction surface. At the same time use a vented disc that can dissipate the heat better. Then as Larry says keep the oem caliper as a park brake.
That wheel spacer is a whole other discussion though!
Julian
That wheel spacer is a whole other discussion though!
Julian
quote:Originally posted by lambolp400s:
Have been looking around for some info on this setup, but I can't find any.
I have had the same setup on my car for about 17 years. It is just two stock rear calipers and seems to work quite well. Was easy to install and was something that was being done in the late 1980's and early 1990's.
Does it also have a different master cylinder than stock? Needs twice the volume of brake fluid to move two rear calipers per side. Not sure why you need it on the rear. More unsprung weight.
K
K
quote:Originally posted by Panterror:
Does it also have a different master cylinder than stock? Needs twice the volume of brake fluid to move two rear calipers per side. Not sure why you need it on the rear. More unsprung weight.
K
I installed a larger aftermarket master cylinder and an adjustable proportioning valve to balance the system. The stock master cylinder does not have enough volume to make both of these calipers work. It gives you twice the braking power in the rear of the car and the extra caliper doesn't weigh that much anyway. The car does stop better than it did with the stock system and this was just an easy and inexpensive upgrade. I know that most of the braking takes place with the front brakes, but a Pantera does have more weight over the rear wheels than most cars. There are a lot more brake system choices now than there was years ago and I may someday upgrade the car to a better system, but for now it works fine for the way I drive.
I thought about this too.
If you were to just eliminate the stock proportioning valve, which I understand limits pressure to the front brakes, as so many people do, it seems like a good idea to add the additional braking capacity in the rear to balance things out.
Regarding the weight, I weighed a rear caliper last winter when I rebuilt mine and I think it was only about 6 or 7 pounds.
It seems worth a try. At least until I can afford the 17" wheel upgrade that will allow the fitting of larger rotors and calipers.
If you were to just eliminate the stock proportioning valve, which I understand limits pressure to the front brakes, as so many people do, it seems like a good idea to add the additional braking capacity in the rear to balance things out.
Regarding the weight, I weighed a rear caliper last winter when I rebuilt mine and I think it was only about 6 or 7 pounds.
It seems worth a try. At least until I can afford the 17" wheel upgrade that will allow the fitting of larger rotors and calipers.
quote:Originally posted by larryw:
I thought about this too.
If you were to just eliminate the stock proportioning valve, which I understand limits pressure to the front brakes, as so many people do, it seems like a good idea to add the additional braking capacity in the rear to balance things out.
The reason why I installed an adjustable proportioning valve was to balance the system. I didn't want the rear brakes locking up before the front ones. The front brakes receive full pressure and the rear ones don't.
Regarding the weight, I weighed a rear caliper last winter when I rebuilt mine and I think it was only about 6 or 7 pounds.
It seems worth a try. At least until I can afford the 17" wheel upgrade that will allow the fitting of larger rotors and calipers.