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  Any need for a proportioning valve here?

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Author Topic:   Any need for a proportioning valve here?
rfedd
Gearhead

Posts: 76
From: Vancouver, WA, USA
Registered: Aug 99

posted 02-15-2003 02:37 PM     Click Here to See the Profile for rfedd   Click Here to Email rfedd     Edit/Delete Message   Reply w/Quote
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.htm

Thanks,

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

posted 03-20-2003 10:24 AM     Click Here to See the Profile for SteveLaRiviere   Click Here to Email SteveLaRiviere     Edit/Delete Message   Reply w/Quote
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.

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'70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150

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Stang85
Journeyman

Posts: 33
From: Virginia Beach, Va. USA
Registered: Mar 2001

posted 03-20-2003 10:56 AM     Click Here to See the Profile for Stang85   Click Here to Email Stang85     Edit/Delete Message   Reply w/Quote
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

posted 03-21-2003 09:25 AM     Click Here to See the Profile for Stang85   Click Here to Email Stang85     Edit/Delete Message   Reply w/Quote
ttt

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SteveLaRiviere
Administrator

Posts: 37258
From: Saco, Maine
Registered: May 99

posted 03-21-2003 09:55 AM     Click Here to See the Profile for SteveLaRiviere   Click Here to Email SteveLaRiviere     Edit/Delete Message   Reply w/Quote
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.

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'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

posted 03-21-2003 01:28 PM     Click Here to See the Profile for mustang68mustangs   Click Here to Email mustang68mustangs     Edit/Delete Message   Reply w/Quote
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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