Author Topic: Disc Drum Proportioning Valve 87' GN replacement  (Read 597 times)

0 Members and 1 Guest are viewing this topic.

Offline gnonyx

  • Turbo Street Modified
  • *****
  • Posts: 312
  • PSI: 0
  • Boost n00b
    • View Profile
Disc Drum Proportioning Valve 87' GN replacement
« on: January 13 2020, 05:09:56 PM »
After doing a oil changed is when I started to smell like wire burning coming around underneath the powermaster.
 I think my powermaster finally went after being the original of having 90,000 miles.
 I was thinking of also doing the vacuum replacement but now I don't have to think, now I have an additional winter work load of doing the replacement. I do have a spare powermaster unit, but after reading many stories of not having brakes, I'm switching over to vacuum.
 I did notice looking underneath I have the original cast iron Disc Drum Proportioning Valve.
 If I'm replacing over to vacuum type do you think I should also replace the Disc Drum Proportioning Valve with the new type of being made of brass?
 Also I see many type of claiming to be equal as GM from USA made to China made
 Has anyone replace the Disc Drum Proportioning Valve, and id so which one and what type was your replacement?
 Thanks
87 GN T-Top, ScanMaster, hot-wire kit, Full Throttle chips w/ matching 60# injectors, adj. fuel pump, and triple pod gauges w/ AEM A/F gauge, oil pressure gauge, vac/boost gauge, Kenne Belle rear seat brace, upgraded tranny w/ Art Carr pan cover, and a pre-lube oil system.

Offline Steve Wood

  • Turbo Street Outlaw
  • *******
  • Posts: 8611
  • PSI: 29
    • View Profile
    • http://www.vortexbuicks-etc.com/
Re: Disc Drum Proportioning Valve 87' GN replacement
« Reply #1 on: January 13 2020, 06:03:21 PM »
Been a long time and I don't recall where I bought the two I changed, but I would definitely change it.
Steve Wood

http://www.vortexbuicks-etc.com

A lot of broken parts does not make you a racer; it makes you a slow learner.

Offline daveismissing

  • Two Buicks- too little money$$
  • Turbo Street Outlaw
  • *******
  • Posts: 6407
  • PSI: 3
  • Two Buicks- too little money$$
    • View Profile
Re: Disc Drum Proportioning Valve 87' GN replacement
« Reply #2 on: January 13 2020, 07:11:18 PM »
Looks like cardone sell a brass one,  13PV001 at the rock.
-Drain plug by Earl Brown, custom oil pan by Rich's Auto

Offline reality

  • Turbo Street Modified
  • *****
  • Posts: 451
  • PSI: 0
  • Boost n00b
    • View Profile
Re: Disc Drum Proportioning Valve 87' GN replacement
« Reply #3 on: January 13 2020, 07:33:07 PM »
A recall never expires. Go
to GM and they will change it.

Offline gnonyx

  • Turbo Street Modified
  • *****
  • Posts: 312
  • PSI: 0
  • Boost n00b
    • View Profile
Re: Disc Drum Proportioning Valve 87' GN replacement
« Reply #4 on: January 13 2020, 08:40:43 PM »
Someone told the recall was for Canada only
Is there any recall notice publish?
87 GN T-Top, ScanMaster, hot-wire kit, Full Throttle chips w/ matching 60# injectors, adj. fuel pump, and triple pod gauges w/ AEM A/F gauge, oil pressure gauge, vac/boost gauge, Kenne Belle rear seat brace, upgraded tranny w/ Art Carr pan cover, and a pre-lube oil system.

Offline earlbrown

  • Turbo Street Eliminator
  • ******
  • Posts: 1531
  • PSI: 6
    • View Profile
Re: Disc Drum Proportioning Valve 87' GN replacement
« Reply #5 on: January 13 2020, 09:14:08 PM »
Quote from: reality
A recall never expires. Go
to GM and they will change it.

I've never heard that before. I was thinking there was X amount of time and that was it.

 Not that I'd let a GM tech touch my car, I still have a factory iron valve on my GM


and GNONYX I have a conversion kit I built for a guy that flaked.  Normal kit with SS braided lines and NOS Delco larger rear cylinders.
'87 GN - 4.2L SFI Turbocharged innercooled V6 - Chrome valve covers - supra pump - 14" K&N - 52mm throttlebody - rocker shaft supports -  1/2 intake spacer - TB coolant bypass - 3" ATR exhaust tip - Alum intake pipe - NOS timing cover - chip - relocated charcoal canister - CR42's - stock

Offline reality

  • Turbo Street Modified
  • *****
  • Posts: 451
  • PSI: 0
  • Boost n00b
    • View Profile
Re: Disc Drum Proportioning Valve 87' GN replacement
« Reply #6 on: January 13 2020, 09:31:28 PM »
While car recalls don't have an expiration date, they are only enforced for "reasonable periods," the agency says. Basically, a recall is over if a vehicle's manufacturer goes out of business, or if the parts needed to make the necessary repair are no longer being made.[/color]Jun 5, 2013

Offline Steve Wood

  • Turbo Street Outlaw
  • *******
  • Posts: 8611
  • PSI: 29
    • View Profile
    • http://www.vortexbuicks-etc.com/
Re: Disc Drum Proportioning Valve 87' GN replacement
« Reply #7 on: January 13 2020, 10:55:52 PM »
I never got a recall on my gn for the vslve
Steve Wood

http://www.vortexbuicks-etc.com

A lot of broken parts does not make you a racer; it makes you a slow learner.

Offline reality

  • Turbo Street Modified
  • *****
  • Posts: 451
  • PSI: 0
  • Boost n00b
    • View Profile
Re: Disc Drum Proportioning Valve 87' GN replacement
« Reply #8 on: January 14 2020, 09:28:55 AM »
I never got a recall either but while I was at the dealer I asked about it and they changed it. Bastages spilled brake fluid all down the fender too.
1988 time frame tho.
Actually never got ANY recalls

Offline gnonyx

  • Turbo Street Modified
  • *****
  • Posts: 312
  • PSI: 0
  • Boost n00b
    • View Profile
Re: Disc Drum Proportioning Valve 87' GN replacement
« Reply #9 on: January 14 2020, 10:16:57 AM »
Knowing today's cars are using Synthetic products, and also are using Synthetic Hi-Temp DOT 3 Brake Fluid, is it okay for our TR to use this type of DOT 3  brake fluid, or use regular non-Synthetic DOT 3 Brake Fluid?
87 GN T-Top, ScanMaster, hot-wire kit, Full Throttle chips w/ matching 60# injectors, adj. fuel pump, and triple pod gauges w/ AEM A/F gauge, oil pressure gauge, vac/boost gauge, Kenne Belle rear seat brace, upgraded tranny w/ Art Carr pan cover, and a pre-lube oil system.

Offline Scoobum

  • Turbo Street Outlaw
  • *******
  • Posts: 4341
  • PSI: 3
  • HIGH SHERIFF OF HELL
    • View Profile
Re: Disc Drum Proportioning Valve 87' GN replacement
« Reply #10 on: January 14 2020, 10:21:06 AM »
I always threw the highest number in mine.
109 235 Cubic Inch Stock Stroke Balanced Rotating Assembly
Stock Crank
TRW .030 Pistons
Stock Rods
Stock Timing Chain/Gears
212/212 Flat Tappet Cam
JB Racing Heads
Stock Rockers
5.7 TT Race Chip
Built 2004R
AC 16930
6262 JB

6.72 at 104.67-25 PSI

I see slow people

Offline Steve Wood

  • Turbo Street Outlaw
  • *******
  • Posts: 8611
  • PSI: 29
    • View Profile
    • http://www.vortexbuicks-etc.com/
Re: Disc Drum Proportioning Valve 87' GN replacement
« Reply #11 on: January 14 2020, 10:44:52 AM »
Dot 3, Dot 4, and Dot 5.1 are all compatible and the term synthetic is probably misleading.  https://blog.amsoil.com/dot-3-and-dot-4-brake-fluid-whats-the-difference/

Never mix DOT 5 with any other type tho as it is silicone based and is never compatible with any other brake fluid. Don't confuse it with DOT 5.1

Generally, I use Dot 4.  Unless one is racing, it probably makes no difference and one would be better served by flushing all the fluid and replacing with new fluid every two years, imo
Steve Wood

http://www.vortexbuicks-etc.com

A lot of broken parts does not make you a racer; it makes you a slow learner.

Offline Scoobum

  • Turbo Street Outlaw
  • *******
  • Posts: 4341
  • PSI: 3
  • HIGH SHERIFF OF HELL
    • View Profile
Re: Disc Drum Proportioning Valve 87' GN replacement
« Reply #12 on: January 14 2020, 10:48:07 AM »
Like Steve says...flush it. I was taught brake fluid will get moisture in it. When it gets old it'll heat up easier and cause brake fade.
109 235 Cubic Inch Stock Stroke Balanced Rotating Assembly
Stock Crank
TRW .030 Pistons
Stock Rods
Stock Timing Chain/Gears
212/212 Flat Tappet Cam
JB Racing Heads
Stock Rockers
5.7 TT Race Chip
Built 2004R
AC 16930
6262 JB

6.72 at 104.67-25 PSI

I see slow people

Offline earlbrown

  • Turbo Street Eliminator
  • ******
  • Posts: 1531
  • PSI: 6
    • View Profile
Re: Disc Drum Proportioning Valve 87' GN replacement
« Reply #13 on: January 14 2020, 06:52:31 PM »
The moisture in the brake fluid will boil.  When that happens, expansion in the hydraulic system starts up.

Steam is 1600 times bigger than water (and that's not a typo).
'87 GN - 4.2L SFI Turbocharged innercooled V6 - Chrome valve covers - supra pump - 14" K&N - 52mm throttlebody - rocker shaft supports -  1/2 intake spacer - TB coolant bypass - 3" ATR exhaust tip - Alum intake pipe - NOS timing cover - chip - relocated charcoal canister - CR42's - stock