[DeTomaso] removing second set of stock rear brake calipers?

[pantdino at aol.com]

Hi, Jack,

yes, all four calipers are plumbed into the brake line.

Where would I look for this RP valve, and how does it differ from a proportioning valve?

Jim






-----Original Message-----
From: JDeRyke at aol.com
To: pantdino at aol.com; detomaso at realbig.com
Sent: Sun, Mar 7, 2010 1:47 pm
Subject: Re: [DeTomaso] removing second set of stock rear brake calipers?


The nylon sliders on all the rear calipers may need a small spot of oil or 
ight grease once in a while. Proper operation of rear calipers means the 
hole caliper slides back & forth- either when the hydraulic brakes are 
ouched or when the e-brake handle is pulled. Some simply get dirty & sticky. 
ou don't say whether all 4 rear calipers are plumbed into the hydraulic 
ines. If so, depending on what master cylinder your car has and what other 
ods the brakes got, it may be a caliper is varnished up and needs disassembly 
nd cleaning. Also, there is often a device called a 'residual pressure' 
alve in the rear brake circuit. The valve may be varnished inside, or someone 
ay have used the wrong RP valve for the application. 
inally, a brake rotor is designed to wobble ever so slightly and this 
nocks the brake pads back a few thousandths, providing some running clearance. 
ome owners go to enormous lengths to eliminate any wobble or run-out, and 
ind up with pads that constantly drag the rotors and have short operating 
ives. Good luck- J Deryke.
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