Master cylinder
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Joined: Oct 2000
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From: San Antonio, TX
Master cylinder
Hey guys,
I noticed that the ports (holes) going from the master cylinder to the proportioning valve differ in size. The port for the front brake is bigger than that for the rear. I was wondering if I could make the hole going to the rear sligthly bigger than it is with my drill so that I get more pressure to the rear brakes thus improving rear brake performance. I have a '88 GTA with "CRAPPY" all wheel disc.
Thanks, Rick
I noticed that the ports (holes) going from the master cylinder to the proportioning valve differ in size. The port for the front brake is bigger than that for the rear. I was wondering if I could make the hole going to the rear sligthly bigger than it is with my drill so that I get more pressure to the rear brakes thus improving rear brake performance. I have a '88 GTA with "CRAPPY" all wheel disc.
Thanks, Rick
Supreme Member
Joined: Feb 2000
Posts: 1,515
Likes: 0
From: Midlothian,VA. 23112-6108
Car: 1982 Z-28
Engine: 5.0 w/ Holly carb
Transmission: TH-700R4
NO! Only larger rotors,and calipers will really make a difference. That's why I went to 1LE at all 4 wheels.
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82Z 305 w/comp 270 magnum cam,Edelbrock Performer RPM,Holly 1850-4,serpentine belt drive.TH700R4 w/B&M holeshot 2000 converter,& megashifter.1LE front brakes, 9bolt 3.27 w/1LE rear brakes.Aluminum driveshaft,boxed rear susp.poly everything,IROC swaybar+wonderbar. 70mph@2200rpm ASE Master Tech plus L2
also recently obtained a
'69 chevelle SS396 w/Turbo 400,3.31 posi,11.0 to 1, headers,etc. Latest project car,'86 IROC stock 305TPI hit on left side,but not too bad
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82Z 305 w/comp 270 magnum cam,Edelbrock Performer RPM,Holly 1850-4,serpentine belt drive.TH700R4 w/B&M holeshot 2000 converter,& megashifter.1LE front brakes, 9bolt 3.27 w/1LE rear brakes.Aluminum driveshaft,boxed rear susp.poly everything,IROC swaybar+wonderbar. 70mph@2200rpm ASE Master Tech plus L2
also recently obtained a
'69 chevelle SS396 w/Turbo 400,3.31 posi,11.0 to 1, headers,etc. Latest project car,'86 IROC stock 305TPI hit on left side,but not too bad
Supreme Member
Joined: Mar 2000
Posts: 13,414
Likes: 6
From: Central NJ, USA
Car: 1986 Firebird
Engine: 2.8 V6
Transmission: 700R4
Actually, I thought the larger fitting was for the rear brakes. The rear brakes use the "frontmost" port, the front brakes use the port closest to the firewall.
And yeah; leave the diameters alone. Brake hydraulics need pressure; when you increase the diameter, you'll increase -volume-, not pressure. Increasing the volume would probably have you pushing your foot further to the ground to get the same braking effort you do now.
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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!
And yeah; leave the diameters alone. Brake hydraulics need pressure; when you increase the diameter, you'll increase -volume-, not pressure. Increasing the volume would probably have you pushing your foot further to the ground to get the same braking effort you do now.
------------------
-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!
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