[DeTomaso] dual rear calipers

[Pantdino]

I believe the prop valve had been removed by the previous owner when he installed the double rear calipers. Apparently that was a common mod back then.  
The car stopped fine before I removed the second set of rears and still does.  But I rebuilt all the calipers, replaced the flex hoses, and changed from silicone to regular fluid at the same time, so there were too many changes to say what the calipers alone might have done.
The only thing I note is a firmer, higher pedal -- probably a combination of less fluid to move before the pads hit the rotors and the non-compressible fluid.

I have never had the desire to do a panic stop / lock the wheels just to see what maximum stopping is.  The car stops plenty hard enough for the driving I do.

Jim


-----Original Message-----
From: B. Seib <oldwheel at shaw.ca>
To: Pantdino <pantdino at aol.com>
Cc: DetomasoList <detomaso at realbig.com>
Sent: Sun, Sep 9, 2012 8:42 pm
Subject: RE: [DeTomaso]   dual rear calipers


Thanks Jim
Did/Does your car have a prop valve? the stock one? Did you notice a change in braking when you removed the calipers?                         
  
-----Original Message-----
From: Pantdino   [mailto:pantdino at aol.com]
Sent: Sunday, September 09, 2012 9:53   PM
To: MikeLDrew at aol.com; oldwheel at shaw.ca;   detomaso at realbig.com
Subject: Re: [DeTomaso]   dual rear   calipers


  
That's how my car was set up when I got it.  After about 15 years I   was getting dragging of the rear calipers so I took them all off and apart.   One caliper had a seized piston and was not salvageable so I went back to the   one caliper per wheel system.  I had always noted the car was hard to   push around in the garage, but it had gotten worse. After making that change   it was much easier.
  
 
  
 
  
  
  
-----Original   Message-----
From: MikeLDrew <MikeLDrew at aol.com>
To: oldwheel   <oldwheel at shaw.ca>; detomaso <detomaso at realbig.com>
Sent: Sun,   Sep 9, 2012 6:28 pm
Subject: Re: [DeTomaso]   dual rear   calipers

  

In a message dated 9/9/12 18 25 31, oldwheel at shaw.ca writes:


> Mike Dailey's request about rear calipers got me thinking again, about
> adding a second stock caliper to my stock rear bakes. ( Ford era ).
> 
> If anyone has succeeded in this endeavor and has any photos of how you did
> it to send, me, I'd be very thankful to you for that.
> 

>>>It's a fairly straightforward procedure.   You just bolt a second set of 
calipers on the rear, and remove the pressure reduction valve in the front. 
  Run a T-fitting from the two rear flex hoses to the hard line on each 
side, and you're in business.   It adds a ton of weight, and there are far, far 
better ways to get improved braking, but if you have a spare set of stock 
calipers lying around, then it's an almost no-cost upgrade.

I wouldn't buy a set of calipers to do this though.

Mike
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