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Topic: 71 Brakes

in Forum: C3 Engines, Driveline and Handling


71 Brakes

Posted: 4/28/08 8:15am Message 1 of 5
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Dorr, MI - USA
Joined: 8/21/2002
Posts: 2581
Vette(s): 71 Colonnade Hardtop Coupe Torch Red with black interior originally L48 built to push around 360hp
Is it possible to add a booster to standard brakes on a 71? My brakes suk. I have new everything. The other question, is there a pad that you would recommend that grabs better?
 
Thanks, Terry



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71 Brakes

Posted: 4/28/08 9:23am Message 2 of 5
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Mounds View, MN - USA
Joined: 5/24/2007
Posts: 1031
Vette(s): 70 LT1 coupe, 69 350 HP coupe, 69 390HP 427 coupe, 71 LS5 convert, 85 coupe, 93 coupe
The only difference with power brakes is the booster and master cylinder (it looks the same, but has a different size bore), and of course the two lines up to the MC. 

I have had several manual brake C3s and even though I am not very strong, I can lock up the tires.  So you must have something not right.  A power MC without a booster will reduce your leverage so you don't get good pressure.  We sell OER semi-metallic pads which work just fine.

Larry



71 Brakes

Posted: 4/28/08 1:00pm Message 3 of 5
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Tucson, AZ - USA
Joined: 10/7/2007
Posts: 341
Vette(s): 1970 White L-46 Air Roadster, 1971 White LT1 Coupe, 1971 Red Auto Air Coupe, 383 stroker, 430 HP, 2002 Millennium Yellow Auto Coupe
I agree, I just helped a friend rebuild his brakes in a '69 BB, he was having the same problem. We found the wrong master cylinder had been installed years ago.
 
The brakes lock up pretty easily now, and have a better "feel" over the power assist IMO.




71 Brakes

Posted: 4/28/08 1:34pm Message 4 of 5
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Dorr, MI - USA
Joined: 8/21/2002
Posts: 2581
Vette(s): 71 Colonnade Hardtop Coupe Torch Red with black interior originally L48 built to push around 360hp
When I replaced the M/C around 5 years ago, I'm pretty sure it was because I thought I might have the wrong one. They do seem to get a little better leverage when I bleed them. I don't have any apparent leaks, but I do have to bleed them about twice a year. Is this normal? I'm gonna make one of Norsky's infamous bleeders, and give it a shot. Thanks guy's. I'd be lost without this site.


71 Brakes

Posted: 4/29/08 7:49am Message 5 of 5
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Mounds View, MN - USA
Joined: 5/24/2007
Posts: 1031
Vette(s): 70 LT1 coupe, 69 350 HP coupe, 69 390HP 427 coupe, 71 LS5 convert, 85 coupe, 93 coupe
If you have to bleed your brakes frequently, it usually means run-out on at least one rotor.  That gets the caliper pumping and lets in air.  If you use that good bleeder, you know you got all the air out, so if it comes back, put a dial indicator on each rotor. 

Good Luck
Larry



in Forum: C3 Engines, Driveline and Handling


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