Topic: Chattering/ knocking rear brake when brake is applied
in Forum: C3 Engines, Driveline and Handling
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Former Member
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Canada
Joined: 3/9/2008
Posts: 164
Vette(s): 70 VETTE 350/300HP, AUTOMATIC, ALL STOCK EXCEPT FOR MILD CAM,LAGUNA GREY, 3:55 POSI GEARS
Just noticed a few days ago at low speed and apply the brakes a get a chatter or knocking sound on right rear. I removed tire and noticed the outer brake pad has a lot of play, what can i do to eliminate the chatter sound. I have seen some plastic inserts you can buy are there any other solutions. Thanks
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Their should not be much play in the pad you may have a stuck piston of the caliper, have someone step on the beaks to see if then the break pad has presure on it fron the piston to see if it is moving.
Former Member
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Joined: 5/16/2010
Posts: 14
Vette(s): 1980 Silver. Complete Edelbrock performer package. TRW rear spring, new shocks.
New Firestone Firehawk tires, Shift kit
I just had a stuck piston on the right front. The car pulled considerably hard to the left, at the same time I also noticed a high pitch squeel while driving (no brakes applied), I decided to completely re-build the entire front end brake system including bearings, calipers, rotors and semi metalic pads. Works great now.
Another thing to check would be the parking brakes since it is the rear on yours, make sure they are not hanging up and the cable is free.
Former Member
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Canada
Joined: 3/9/2008
Posts: 164
Vette(s): 70 VETTE 350/300HP, AUTOMATIC, ALL STOCK EXCEPT FOR MILD CAM,LAGUNA GREY, 3:55 POSI GEARS
Thanks for the reply, I will take a better look tomorrow, will keep you posted.
Former Member
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Oak Creek, WI - USA
Joined: 5/21/2008
Posts: 1965
Vette(s): 1981 Great White Shark. Red Interior, 350/190 hp. PS, PB (SS), A/C CC, T-Tops. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vettes Car Club. 175,000 Original miles!! Now own a 1998 C-5!
You should not have play. That is not normal. Check springs and parking brake and brake shoe.
Dan
Former Member
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Canada
Joined: 3/9/2008
Posts: 164
Vette(s): 70 VETTE 350/300HP, AUTOMATIC, ALL STOCK EXCEPT FOR MILD CAM,LAGUNA GREY, 3:55 POSI GEARS
The calipers are only 1 year old. if i press the brake hard there is no chattering
Former Member
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Oak Creek, WI - USA
Joined: 5/21/2008
Posts: 1965
Vette(s): 1981 Great White Shark. Red Interior, 350/190 hp. PS, PB (SS), A/C CC, T-Tops. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vettes Car Club. 175,000 Original miles!! Now own a 1998 C-5!
What about the Parking Brake shoes and Hardware????
Former Member
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Canada
Joined: 3/9/2008
Posts: 164
Vette(s): 70 VETTE 350/300HP, AUTOMATIC, ALL STOCK EXCEPT FOR MILD CAM,LAGUNA GREY, 3:55 POSI GEARS
I will take a better look tomorrow.All four pistons seemed fine, just some play side to side on outer brake pad. Maybe its not the pads?
Former Member
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Canada
Joined: 3/9/2008
Posts: 164
Vette(s): 70 VETTE 350/300HP, AUTOMATIC, ALL STOCK EXCEPT FOR MILD CAM,LAGUNA GREY, 3:55 POSI GEARS
Checked the pistons, they looked fine, took the pads out put the two back to back and noticed the outer one was slightly shorter in length. Switched the two pads back into the caliper and problem was solved.
Former Member
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Oak Creek, WI - USA
Joined: 5/21/2008
Posts: 1965
Vette(s): 1981 Great White Shark. Red Interior, 350/190 hp. PS, PB (SS), A/C CC, T-Tops. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vettes Car Club. 175,000 Original miles!! Now own a 1998 C-5!
Thats the ticket !!!!
Dan
in Forum: C3 Engines, Driveline and Handling
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