rear swap drag
#1
Grey-Bruce Rotorhead
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Join Date: Apr 2002
Location: Chesley, Ontario, Canada
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rear swap drag
I swapped my diff with drums to a an LSD with discs and have noticed that the back pads are riding on the rotors all of the time. I recently learned that the rear drum system always provided some residual pressure to keep the boots sealed. When I did the swap, I didn't change the proportioning valve or master. Is there a way to modify my existing proportioning valve and/or master so that my rear discs are fully released?
#3
Lives on the Forum
I've got a '85 GS, and when I swapped in the LSD/disc rear end I did not change anything other than the rear end. I have no issues at all.
Maybe check and make sure the slide pins are well lubricated on the calipers?
.
Maybe check and make sure the slide pins are well lubricated on the calipers?
.
#5
When in doubt...flatout
iTrader: (7)
Here's some more information.
"The single-piston floating-caliper disc brake is self-centering and self-adjusting. The caliper is able to slide from side to side so it will move to the center each time the brakes are applied. Also, since there is no spring to pull the pads away from the disc, the pads always stay in light contact with the rotor (the rubber piston seal and any wobble in the rotor may actually pull the pads a small distance away from the rotor). This is important because the pistons in the brakes are much larger in diameter than the ones in the master cylinder. If the brake pistons retracted into their cylinders, it might take several applications of the brake pedal to pump enough fluid into the brake cylinder to engage the brake pads."
http://auto.howstuffworks.com/auto-p...isc-brake2.htm
Here's some more information.
"The single-piston floating-caliper disc brake is self-centering and self-adjusting. The caliper is able to slide from side to side so it will move to the center each time the brakes are applied. Also, since there is no spring to pull the pads away from the disc, the pads always stay in light contact with the rotor (the rubber piston seal and any wobble in the rotor may actually pull the pads a small distance away from the rotor). This is important because the pistons in the brakes are much larger in diameter than the ones in the master cylinder. If the brake pistons retracted into their cylinders, it might take several applications of the brake pedal to pump enough fluid into the brake cylinder to engage the brake pads."
http://auto.howstuffworks.com/auto-p...isc-brake2.htm
Here's some more information.
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