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Author
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Topic: Any need for a proportioning valve here?
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rfedd
Gearhead Posts: 76
From: Vancouver, WA, USA
Registered: Aug 99
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posted 02-15-2003 02:37 PM
   
I just completed the swap from drum fronts to Wilwood discs. Swapped out M/C to 74 Maverick. 10.5 inch slicks on rear with 11 inch Ford truck brakes and 3 1/2 inch skinnies up front. Will this require a proportioning valve or the MP1 combination valve? The car almost never sees the street.
http://www.mpbrakes.com/mp21F.htmThanks, Ron [This message has been edited by rfedd (edited 02-15-2003).]
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SteveLaRiviere
Administrator Posts: 37258
From: Saco, Maine
Registered: May 99
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posted 03-20-2003 10:24 AM
I'd sure want to tune them with an adjustable PV. The engineer that designed the system wasn't counting on it having Wildwoods and slicks.  ------------------
'70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150 Please remember our sponsors,
Mustangs Plus, NPD, Osborn Reproductions, MyFordPerformance.com, and FordRamAir.com
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Stang85
Journeyman Posts: 33
From: Virginia Beach, Va. USA
Registered: Mar 2001
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posted 03-20-2003 10:56 AM
Steve,What is the best procedure to set the p/v on a newly installed brake system. Installing discs all the way around on our drag only car with lineloc, transbrake, etc. and want to know if there is an initial setting for the p/v. Maybe 50% or biased to the front. We are adjusting the brake pressure to the rear brakes. Is that correct? Thanks in advance.
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Stang85
Journeyman Posts: 33
From: Virginia Beach, Va. USA
Registered: Mar 2001
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posted 03-21-2003 09:25 AM
ttt
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SteveLaRiviere
Administrator Posts: 37258
From: Saco, Maine
Registered: May 99
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posted 03-21-2003 09:55 AM
The front brakes does most of the stopping since that's where all the weight is during decelleration. I would start at 70/30 and tune it in a parking lot to eliminate rear wheel lock up.------------------
'70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150 Please remember our sponsors,
Mustangs Plus, NPD, Osborn Reproductions, MyFordPerformance.com, and FordRamAir.com
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mustang68mustangs
Gearhead Posts: 332
From: pittsburgh,pa.usa
Registered: Jul 2001
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posted 03-21-2003 01:28 PM
I read an article in car craft that said Baer says if you use an adjustable type pv to turn the knob all the way in then back it out five complete turns as a starting point.
I would use an adjustable one for our app. they are pretty cheap.you dont want the rears to fully lock up on a panic stop.
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