The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1960 - 1966 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 09-07-2024, 07:04 PM   #1
64stpside
Registered User
 
Join Date: Aug 2015
Location: old hickory, tn
Posts: 151
Inital adjustment on willwood adj prop valve on 4 wheel disc brakes??

Hey guys,
I just got a 4 wheel disc brake kit from (auto city classic/toms classic) put on my 64. I decided on a willwood adjustable proportioning valve (the grey one, line in, line out, screw adjuster). I put the screw adjuster on the valve 1/2 way between all the way out and all the way in to start. I took it around the neighborhood and it seemed to do good but i haven't gotten into "panic stops" yet.
Just looking for anyone with experience with these wilwood adjustable valves on where your initial adjustment was.
64stpside is offline   Reply With Quote
Old 09-07-2024, 07:33 PM   #2
geezer#99
Registered User
 
geezer#99's Avatar
 
Join Date: Aug 2009
Location: Bowser
Posts: 13,715
Re: Inital adjustment on willwood adj prop valve on 4 wheel disc brakes??

You gotta go test.
Hammer the pedal down and adjust from there.
geezer#99 is offline   Reply With Quote
Old 09-08-2024, 03:22 PM   #3
theastronaut
Registered User
 
theastronaut's Avatar
 
Join Date: May 2011
Location: Anderson SC
Posts: 3,898
Re: Inital adjustment on willwood adj prop valve on 4 wheel disc brakes??

Go out and bed in the pads pretty heavily to start with, so the rotors have a transfer layer established and the pads bite like they should, then do some panic stops to see if the back locks up first or not. Adjust it until the back locks up just after the front.

Note that some pads perform noticeably different when hot, so do your testing after the brakes have cooled back down to a normal temp between panic stop tests to simulate the most normal circumstances. Next time you change pads you'll want to bed those in and recheck that the new pads have the same f/r balance and make adjustments if necessary. Different pads have different coefficient of friction.
theastronaut is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 02:58 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com