03-01-2015, 06:29 AM
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#1
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3rd Gen Brake Booster/ Master Cylinder Question.
Just a quick little question that may help me to finally get to the bottom of a severe brake problem my 4Runner's had since day one...
I need you guys to go out and pop your hoods and tell me, how many studs come out of your brake booster and hold your master cylinder to it? 2 or 4?
I need as many people as possible to do this just to be sure... Thanks in advance to anybody who'll check for me.
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'97 3RZ 5 Speed "FrankenRunner" ( Build Thread) - Dormant
The "shitmobile" 500$ 3RZ Auto 4Runner - ( Saved from the Scrapyard: Resurrecting a 500$ 3rd Gen
02 Tacoma Double Cab, mid-travel, locked, armored, supercharged and riced. (Longbed and 5 speed in the works)
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03-01-2015, 04:45 PM
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#2
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Bump, need this.
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'97 3RZ 5 Speed "FrankenRunner" ( Build Thread) - Dormant
The "shitmobile" 500$ 3RZ Auto 4Runner - ( Saved from the Scrapyard: Resurrecting a 500$ 3rd Gen
02 Tacoma Double Cab, mid-travel, locked, armored, supercharged and riced. (Longbed and 5 speed in the works)
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03-01-2015, 06:05 PM
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#3
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Two. 1996 SR5
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03-01-2015, 06:15 PM
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#4
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Two .... 98 Limited 2WD
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03-01-2015, 06:48 PM
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#5
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2. 1998 2WD Limited.
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1998 4Runner Limited, 3.4, Auto, 2WD
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03-01-2015, 09:49 PM
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#6
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2, 99 Limited
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03-01-2015, 11:29 PM
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#7
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Hmmm, that's not what I was hoping for, maybe some of the 3RZ guys can chime in...
@ 3rzrunner
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@ awthorn
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@ Mc1337sauce
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'97 3RZ 5 Speed "FrankenRunner" ( Build Thread) - Dormant
The "shitmobile" 500$ 3RZ Auto 4Runner - ( Saved from the Scrapyard: Resurrecting a 500$ 3rd Gen
02 Tacoma Double Cab, mid-travel, locked, armored, supercharged and riced. (Longbed and 5 speed in the works)
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03-01-2015, 11:48 PM
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#8
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@ UnderFire
sorry for a late to the game reply. My son has been running a fever all day and I haven't been on the forum. I am only seeing two studs and a sort of pivot hook hole in the top left when looking directly at it. Photo attached. Sorry for it being a crappy cell photo, hope this helps!
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BUILD THREAD | Flickr
97 2.7 4x4 5spd, OME 881 / 890, Cooper Discoverer A/T 3, blacked out 16" split 3s, Savage Sliders. LCE Street Headers, Marlin HD Clutch. |
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03-01-2015, 11:49 PM
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#9
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Not sure if it helps but I have no ABS...thank God! 
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BUILD THREAD | Flickr
97 2.7 4x4 5spd, OME 881 / 890, Cooper Discoverer A/T 3, blacked out 16" split 3s, Savage Sliders. LCE Street Headers, Marlin HD Clutch.
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03-02-2015, 12:08 AM
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#10
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I've got two as well, see the attached pic (sorry if it's not the best, on my phone). I know for a fact that I still have the original booster and master on my truck.
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1997 4Runner 3RZ-FE Auto 2WD -- Original Owner 180K+ Miles
Mods: KO Racing Turbocharged at 5psi -- TiAL QR BOV and MV-S Wastegate -- Garrett T3/T4 Turbo (.50 Compressor/.63 Exhaust) -- PTP Lava Turbo Blanket -- Injen/AMSOIL Dry Air Filter -- JBA Catback Exhaust -- Badged as Hilux Surf -- OEM Surf Kouki Lighting -- FJ Trail Wheels and Tires -- 2.5in Lift ToyTec Spacer Front/Fat Bob's Garage Spacer Rear -- JAOS Skid Plate -- OEM Hilux Surf Rear Wing -- 35% Tint Front/15% Rear -- Woodgrain Interior Panels -- Clarion CX501 Headunit with 2 Kicker CompVR 12s
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03-02-2015, 12:09 AM
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#11
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No ABS either, if that matters.
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1997 4Runner 3RZ-FE Auto 2WD -- Original Owner 180K+ Miles
Mods: KO Racing Turbocharged at 5psi -- TiAL QR BOV and MV-S Wastegate -- Garrett T3/T4 Turbo (.50 Compressor/.63 Exhaust) -- PTP Lava Turbo Blanket -- Injen/AMSOIL Dry Air Filter -- JBA Catback Exhaust -- Badged as Hilux Surf -- OEM Surf Kouki Lighting -- FJ Trail Wheels and Tires -- 2.5in Lift ToyTec Spacer Front/Fat Bob's Garage Spacer Rear -- JAOS Skid Plate -- OEM Hilux Surf Rear Wing -- 35% Tint Front/15% Rear -- Woodgrain Interior Panels -- Clarion CX501 Headunit with 2 Kicker CompVR 12s
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03-02-2015, 12:41 AM
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#12
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Senior Member
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Thanks guys, looks like my master cylinder is the correct one then.
Its strange, I got an OEM booster out of a 97 3rz Tacoma, and when I went to put it in, it had 4 studs on the master cylinder side...
I'm trying to solve a very hard brake pedal that's impossible to bleed in the rear and thought that the non-OEM booster and MC might've been the wrong one, possibly off an 80 series LC with rear discs. Looks like its back to the drawing board.
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'97 3RZ 5 Speed "FrankenRunner" ( Build Thread) - Dormant
The "shitmobile" 500$ 3RZ Auto 4Runner - ( Saved from the Scrapyard: Resurrecting a 500$ 3rd Gen
02 Tacoma Double Cab, mid-travel, locked, armored, supercharged and riced. (Longbed and 5 speed in the works)
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03-02-2015, 10:47 AM
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#13
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Quote:
Originally Posted by UnderFire
Thanks guys, looks like my master cylinder is the correct one then.
Its strange, I got an OEM booster out of a 97 3rz Tacoma, and when I went to put it in, it had 4 studs on the master cylinder side...
I'm trying to solve a very hard brake pedal that's impossible to bleed in the rear and thought that the non-OEM booster and MC might've been the wrong one, possibly off an 80 series LC with rear discs. Looks like its back to the drawing board.
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I have a 80 series master in my FJ62, it has four studs as you may already know. My 2000 runner is a 3rz which has 2 studs and looks just like the V6 model. I can't speak to the booster though, that may be your issue.
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1989 FJ62 5.3 Chevy, FZJ80 Axles, 4.88's with ARB.
2000 2wd runner, 4 cylinders, yes it IS slow.
1999 4WD SR5 Desert Dune 3.4 351K and counting.
2000 4WD sport 3.4 Elocker <--My son's but I still end up paying.
2001 2WD SR5 3.4 <-- My daughter's...see preceding line.
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03-02-2015, 02:19 PM
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#14
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98 Limited V6 4x4, 2 Studs.
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1998 4Runner Limited 3.4L V6 Auto 300,000kms(186k miles)
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03-02-2015, 03:03 PM
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#15
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Senior Member
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Quote:
Originally Posted by IBallEngineer
I have a 80 series master in my FJ62, it has four studs as you may already know. My 2000 runner is a 3rz which has 2 studs and looks just like the V6 model. I can't speak to the booster though, that may be your issue.
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Ok, from the couple pictures I saw I thought the 80 Series had 2 bolts. I guess the only thing I'm unclear about now is why the Taco had 4... I'm hoping to go to the junkyard tomorrow and find an OEM 4Runner booster.
__________________
'97 3RZ 5 Speed "FrankenRunner" ( Build Thread) - Dormant
The "shitmobile" 500$ 3RZ Auto 4Runner - ( Saved from the Scrapyard: Resurrecting a 500$ 3rd Gen
02 Tacoma Double Cab, mid-travel, locked, armored, supercharged and riced. (Longbed and 5 speed in the works)
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