which years 4runners had disks?
- Thread starter peiserg
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I assuem all 4runners would have front disk. I know my 82pu has disc front along with my 84, and i beleive the 4runner started in 84(?) and had a disc front and drum rear brake setup
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No rear disc brakes ever, that I know of... My wife's '02 has drums...
The answer to the real question you are asking is....get a booster/master from the later 2nd gen v6 4runners. I dont know which years but my 92 4runner came with the same part number master cylinder as the fzj80 master, which is 4 wheel discs.....or just get the fzj80 master, its a direct bolt in upgrade for the 4runners.
NorCalBorn
10 Year
15 Year
peiserg, from what I can infer from your original post is you need a bit more clarification for us.
If you intend to only run front discs, which all 2nd-Gen 4Runners up have then yes.
However, and this is important, if you intend to run discs front and rear, you must use at least an 80-series (1991-1997) Land Cruiser master cylinder as it is intended for that purpose and has the residual valve needed for proper operating pressures to the rear discs. I believe that might be why you were looking into the Supra/LC masters..
4Runner master cylinders do not have this, and no amount or retrofitting will change the way those masters are designed.
If you want discs on all 4 corners, Land Cruiser master.
If not, 4Runner master, 2nd-gen's had 2 sizes, early models w/ the 1", and 93-95 with the 1-1/16". Both are 4 bolt, the 96+ appear to only be a 2 bolt setup for mounting to the booster.
To add a little complication to the matter, some people prefer the 1" master for single disc operation on earlier rigs as it builds pressure differently, while some people, when their rig gets at or near 4,000lbs prefer the 1-1/16" master.
Also, IIRC the 93-95 4Runners and Land Cruisers share similar double diaphragm boosters, easily identified by the additional 1" in face distance.
I hope that clears up what was missing and gives a better answer, if not go onto either Marlin Crawler or Yodaman's sites, or call either entity for better tech answers.
Whatever you go with, find a safe area to test your braking system out, as little changes can lead to big changes in stopping habits, from anything to unintentional full lock-up to unbalanced brake bias causing the rear end to swing around in a panic or hard stop.
If you intend to only run front discs, which all 2nd-Gen 4Runners up have then yes.
However, and this is important, if you intend to run discs front and rear, you must use at least an 80-series (1991-1997) Land Cruiser master cylinder as it is intended for that purpose and has the residual valve needed for proper operating pressures to the rear discs. I believe that might be why you were looking into the Supra/LC masters..
4Runner master cylinders do not have this, and no amount or retrofitting will change the way those masters are designed.
If you want discs on all 4 corners, Land Cruiser master.
If not, 4Runner master, 2nd-gen's had 2 sizes, early models w/ the 1", and 93-95 with the 1-1/16". Both are 4 bolt, the 96+ appear to only be a 2 bolt setup for mounting to the booster.
To add a little complication to the matter, some people prefer the 1" master for single disc operation on earlier rigs as it builds pressure differently, while some people, when their rig gets at or near 4,000lbs prefer the 1-1/16" master.
Also, IIRC the 93-95 4Runners and Land Cruisers share similar double diaphragm boosters, easily identified by the additional 1" in face distance.
I hope that clears up what was missing and gives a better answer, if not go onto either Marlin Crawler or Yodaman's sites, or call either entity for better tech answers.
Whatever you go with, find a safe area to test your braking system out, as little changes can lead to big changes in stopping habits, from anything to unintentional full lock-up to unbalanced brake bias causing the rear end to swing around in a panic or hard stop.
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I can't agree with this. I have disks all the way around (rears are Sky Manufacturing brackets and Monte Carlo calipers), and I have a 1" MC & booster from a '94 xcab pickup. No extra residual valve, stock LSPV still attached. Works great.
Well, I pulled the MC and booster off the truck myself, the MC is the stock AISIN. I tore it totally apart and put a new cup kit in it, I don't remember any residual valve on the rear circuit. But it was several years ago.
If I had to guess, since anything after 95 isn't my thing, I'd say rear discs started when Traction Control, A-Trac, Spin Control, Yaw Control... And Pitch Control... Park Control, Decent Control, VSC Control... and every other control started...
And I'm pretty sure anything with TC or A-TC won't work b/c it needs wheel speed sensors on every wheel.
Rear ABS, up to 95 anyway is another story... It started with a sensor on the top of the ring gear in the rear and if it stopped the rear brake would pulsate...
Pretty sure TC or A-TC has 4 solenoids on the master and worked with 4 wheel speed sensors, one per tire, so if slip is detected actuators would hit the brake on the spinning wheel only, no driver input needed...
Man it would be cool to be able to transplant this... (But that's a lot of work for soft traction)
This stuff works killer with Torsens or TrueTracs since wheel slip and braking that wheel ONLY would almost instantly cause the limited slip to bump... Very on-road friendly to... No tubes no wires no compressors, no $800 EACH lockers... no fuss no muss, just works!
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