Vacuum Brake Conversion (pedal assembly question)

evox · 12-08-2005, 01:13 AM

I'm thinking of switching to a vacuum brake setup since the powermaster in my car is in the process of dying. I'm probably going to buy the master cylinder, brake booster and check valve from an auto part store, so those parts won't be a problem, the vacuum brake pedal assembly is a differnt matter though. What is the effect of using the powermaster pedal assembly with a vacuum set up, will it work? Or do I need a vacuum brake pedal assembly for this conversion to work properly?

CaPPY · 12-08-2005, 02:40 AM

Quote:

Originally Posted by evox

Or do I need a vacuum brake pedal assembly for this conversion to work properly?

Yes. Key words: "Work properly." Do a search...tons of info on this.

turbomonte2 · 12-08-2005, 05:35 AM

Eyup--save yourself lotsa hassle by getting/using pedal from MC, non-turbo Buick, other G-Body--they have more leverage vs. one w/ slushmaster.

scooter135 · 12-08-2005, 07:06 AM

Talk to Red Regel T He has a complete brake kit for $150

NOTACARLO · 12-08-2005, 08:52 AM

I relocated the pin on the pedal and it has worked fine for years. Of course you may need welding 101.

Steve Wood · 12-08-2005, 09:03 AM

And if you have not had welding 101, you may need a pine box when the pin breaks off....

scottyb · 12-08-2005, 10:47 AM

All you need is a pedal from a G-body, not the whole assembly. It can be from a 4-door G-body as well.

Don't forget to order a TTA vacuum block or make provisions to get vacuum elsewhere.

NOTACARLO · 12-08-2005, 08:56 PM

Quote:

Originally Posted by Steve Wood

And if you have not had welding 101, you may need a pine box when the pin breaks off....

I used a grade 8 alloy pin through the pedal and heliarc'd. I'd rather pull her back into the garage than through the garage.

12-08-2005, 01:13 AM	#1 (permalink)
evox Registered User Join Date: Apr 2003 Location: Orlando Posts: 30	Vacuum Brake Conversion (pedal assembly question) I'm thinking of switching to a vacuum brake setup since the powermaster in my car is in the process of dying. I'm probably going to buy the master cylinder, brake booster and check valve from an auto part store, so those parts won't be a problem, the vacuum brake pedal assembly is a differnt matter though. What is the effect of using the powermaster pedal assembly with a vacuum set up, will it work? Or do I need a vacuum brake pedal assembly for this conversion to work properly? __________________ PTE-54, 42.5lbs inj. adj. fpr, Walbro 340 hotwired, LS1-MAF Translator, Alky Control, 3,200 converter.

12-08-2005, 05:35 AM	#3 (permalink)
turbomonte2 Older--but Getting Wiser Join Date: Sep 2004 Location: Myrtle Beach, SC Posts: 2,196	Eyup--save yourself lotsa hassle by getting/using pedal from MC, non-turbo Buick, other G-Body--they have more leverage vs. one w/ slushmaster. __________________ Monte 87GN, TE60, 23#, 60#Injrs, 214/214 hyd roller, Mild-ported hds & int, LT1+Translator, SM 2.1, lotsa gauges, Dutt Nk, V booster, Old-style SMC alky, TTwk93-alky, Q-Boost, Remote Oil Filter/Turbo Saver, KB 3" down & test pipe w/ cut-out, 3000 stall 10.5" L/U, CK Stg2 tranny kit+ some hard parts, xtrnl trans cooler, Dual 2.5" Hookers, Frt & bk braces, Hollow 36mm frt bar + Bilsteins, Air Bags + KYBs, Hotwired Wlbro/Racetronix GSS340M, 255x60x15 street meats, "working" Factory Astroroof & Pwr Antenna... Some other stuff laying around: 51 Merc Cpe, 49 Ford on T-Bird chassis, 51 Ford Victoria/HT (350/350)--got it running now & have brakes too... >> Wealth cannot multiply by dividing it...<<

12-08-2005, 07:06 AM	#4 (permalink)
scooter135 Registered User Join Date: Apr 2005 Location: Tampa, FL Posts: 395	Talk to Red Regel T He has a complete brake kit for $150 __________________ 87 GN 13.716@101.33(on street tires and 17psi boost(alky was broke )) 99 30th Trans AM(new toy) 1/8th 9.2@81.3 darn 6 speed

12-08-2005, 09:03 AM	#6 (permalink)
Steve Wood Scam Detector Enabled Join Date: Sep 2000 Location: East of Eden, Texas Posts: 41,397	And if you have not had welding 101, you may need a pine box when the pin breaks off.... __________________ ------------------ A proud member of Stonewallers Against Bogus Technology Fix reason firmly in her seat, and call to her tribunal every fact, every opinion. Question with boldness even the existence of a God; because, if there be one, he must more approve of the homage of reason, than that of blindfolded fear. Thomas Jefferson . www.vortexbuicks-etc.com

12-08-2005, 10:47 AM	#7 (permalink)
scottyb Registered User Join Date: Jan 2002 Location: Jacksonville, FL Posts: 506	All you need is a pedal from a G-body, not the whole assembly. It can be from a 4-door G-body as well. Don't forget to order a TTA vacuum block or make provisions to get vacuum elsewhere. __________________ 86T 009s/TT93, Cold K&N, 160, test pipe, Hybrid alky, BSTC, misc other basic crap. Loose nut behind wheel.

12-08-2005, 08:52 AM	#5 (permalink)
NOTACARLO Registered User Join Date: Nov 2003 Location: Dallas Posts: 87	I relocated the pin on the pedal and it has worked fine for years. Of course you may need welding 101.

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