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11-03-2010, 08:31 AM
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CC Member
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Join Date: Dec 2009
Location: Buckeye,
AZ
Cobra Make, Engine: FFR III 302
Posts: 178
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Not Ranked
Brakes
What is the percentage of brake front to back when adjusting the valve? They seem a little weak.
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11-03-2010, 04:19 PM
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Senior Club Cobra Member
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Join Date: Jun 2000
Location: Gilford,
NH
Cobra Make, Engine: FFR 302 carb
Posts: 8,121
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Not Ranked
Are they locking up? If so which locks first the rears or the fronts?
Mike
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11-03-2010, 08:03 PM
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CC Member
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Join Date: Mar 2005
Location: Mesa,
AZ
Cobra Make, Engine: FFR from Levy Racing 302 FI w/Edelbrock Performer heads
Posts: 1,644
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Not Ranked
Believe me you don't want the rear's to lock up first.
__________________
dave from mesa
Vietnam Vets may be eligible for medical care and disability compensation. Contact the VA if you have prostate cancer or type 2 diabetes. Finally got around to going to the VA.
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11-03-2010, 10:44 PM
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CC Member
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Join Date: Dec 2009
Location: Buckeye,
AZ
Cobra Make, Engine: FFR III 302
Posts: 178
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Not Ranked
The brakes are not locking up, but are a little weak, I just wanted to know if there was a percentage of brake bias front to back and the valve that adjusts them and how far should you adjust them.
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11-04-2010, 12:02 AM
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CC Member
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Join Date: Aug 2000
Location: Glendale,
AZ
Cobra Make, Engine: SPF 468ci 550HP + 150HP NX Matching Shelby GT500 650HP
Posts: 4,250
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Not Ranked
John, at your normal speed you could just put your foot on the cement and let it slow your down. You don't need real brakes. LOL
AZ Bob
__________________
AZCOBRA, AZBOBS Plates & JAFMO
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11-04-2010, 05:10 AM
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CC Member
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Join Date: Feb 2002
Location: Dadeville,
AL
Cobra Make, Engine: Sold my EM.
Posts: 2,459
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Not Ranked
Quote:
Originally Posted by Skully
The brakes are not locking up, but are a little weak, I just wanted to know if there was a percentage of brake bias front to back and the valve that adjusts them and how far should you adjust them.
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Skully,
As was implied before, the optimum brake bias for street use is where the front tires lock up just slightly before the rears. This setting can vary greatly between cars because of tire size, suspension adjustment, brake caliper and rotor size just to name a few. Therefore, the usual way of adjusting the bias is to put some bias toward the front, drive to a modest speed in a safe place, and try to lock up the brakes. If the rears lock up first, put in some more front bias and repeat. If the fronts lock up first, take some out a litlle at a time until the rears lock up, and then put a little front bias back in.
__________________
Tommy
Cheetah tribute completed 2021 (TommysCars.Weebly.com)
Previously owned EM Cobra
"Never attribute to malice that which is adequately explained by stupidity." - Hanlon's Razor
Last edited by Tommy; 11-04-2010 at 05:13 AM..
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11-04-2010, 12:02 PM
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Senior Club Cobra Member
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Join Date: Dec 2001
Location: Glendale,
AZ.
Cobra Make, Engine: Cobray-C3, The 60's body lines on todays chassis technology
Posts: 2,302
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Not Ranked
I firmly believe every car driver should know how his brakes perform. What I mean to say is prove they do work and not pull to either side out of reason as an overall function. I want the front to lock first but in a full panic stop all should be capable of locking up. If only front will lock the bias needs to be adjusted until you prove rears do function. I also want to be sure car won't yank L or R regardless. Beyond these functions you can tweak until optimized. All this can be tested at a reasonable speed and short black marks work without flat spotting the tires.
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11-04-2010, 05:05 PM
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Senior Club Cobra Member
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Join Date: Sep 2000
Location: Holderness, NH, US of A,
NH
Cobra Make, Engine: CSX 4772 old iron FE
Posts: 5,499
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Not Ranked
65/35........
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