Disc brakes all around

[Rcastle]

Still on the stock master cylinder and whatnot?

Yes.
I have the Tundra brakes in the front, and all stainless lines and my pedal feels just like it always has with the factory master cylinder. I was expecting to have to upgrade or to put in a proportioning valve but everything is working great and feels just like it always has.

I know when I did the Tundra upgrade it was a little squishy until I upgraded the brake lines to stainless. I also still have my ABS hooked up and it works just fine.

 

[midcoma]

I removed my ABS, so that might have something to do with the pedal feel after the brake upgrades.

 

[rideexileex]

I can say from experience that a proportioning valve is mandatory on the factory MC for a rear disk conversion. Without it, the back end comes around scary fast in snow, ice, loose crap.

 

[midcoma]

I run a proportioning valve on mine. I took advantage of a rainy day to get everything dialed in. Went behind some department stores and drove about 30mph, then slammed on the brakes. The goal was to adjust the valve until the front and rear brakes locked up at the same time. As I took power away from the rear, it ended up that the truck would just stop with no wheel lock. It takes a lot to get the brakes to lock now.

 

[Bad Luck]

For mine, I was on the stock master cylinder after upgrading to Tundra brakes. When I added the Mustang calipers in the rear, the pedal was too soft and had too much travel. That's when I changed out to a larger master cylinder.

What master cylinder did you change to?

 

[rideexileex]

What master cylinder did you change to?

I did the 76 Chevy Blazer MC 1 1/8", but didn't care for it. Pedal felt great for your typical braking, but hard stops were too hard on the pedal.

I then bought a new standard 4Runner 1" Aisin MC off RockAuto and the new MC made a huge difference.

A 1 1/16" I think would be the prime spot, but I have yet to do any research.

 

[midcoma]

What master cylinder did you change to?

Duralast part # NM2197.
Part search for a 1990 Ford F350.

 

[2TH4IST]

[MENTION=118207]midcoma[/MENTION] I'm interested in the rear caliper brackets. Do you have any pics you can post, thanks.

 

[pavelvoivoda]

that guy used to be on this forum when I first started - wonder where he went?
(also his garage is really great)

Who? Me or Karma Supra from the link?!

 

[pavelvoivoda]

If Toyota made the bolt patterns on the axle housings the same, this swap would be so much more feasible. Damn it.

I know, Recently I tried to look for an axle for a buddy, but because of the bolt pattern, the axle form the prado wasn't a fit.

 

[midcoma]

[MENTION=118207]midcoma[/MENTION] I'm interested in the rear caliper brackets. Do you have any pics you can post, thanks.

These are from the final print to verify clearance and fit.

 

[sleepydad]

These are from the final print to verify clearance and fit.

I had 3x sets of these water jet cut last year and have used them on both of my trucks. you just would need to make some spacers. 4mm I think works fine. if you could find some thicker round stock you could just chop off spacers. the spacers are just like thick washers.

bracket V18.dxf - Google Drive

https://www.toyota-4runner.org/3335494-post91.html

It's a great setup, I have run it around 2x MN winters now and the ABS works just fine in snow/ice. no other mods to the brake system are needed.

 

[HiluxSurf SSR-G]

isn't that guy TorqueoftheDevil?

Who? Me or Karma Supra from the link?!

 

[HiluxSurf SSR-G]

the reason why Toyota did that is because the bolts will interfere with the mechanism of the drum brake (drum in disc) used as parking brake.

If Toyota made the bolt patterns on the axle housings the same, this swap would be so much more feasible. Damn it.

 

[HiluxSurf SSR-G]

is that self-adjusting? meaning when you have cargo in the back, it will increase the brake pressure in the rear brakes? and when there's no cargo, the rear brake pressure is reduced

I run a proportioning valve on mine. I took advantage of a rainy day to get everything dialed in. Went behind some department stores and drove about 30mph, then slammed on the brakes. The goal was to adjust the valve until the front and rear brakes locked up at the same time. As I took power away from the rear, it ended up that the truck would just stop with no wheel lock. It takes a lot to get the brakes to lock now.

 

[Ed_C]

Interesting, so the 4th-gen rear rotors are compatible with the 3rd-gen's e-brake system? No shoe replacements or anything?

 

[HiluxSurf SSR-G]

yes, the calipers and the rotors are compatible. you need to replace the brake shoes and other parts like the springs, etc. because the 4th gen's shoes are smaller since they're only for parking brake and for emergency brake. the shoes will be using the disc as drum (drum in disc). the cable is the same

 

[Bad Luck]

Interesting, so the 4th-gen rear rotors are compatible with the 3rd-gen's e-brake system? No shoe replacements or anything?

yes, the calipers and the rotors are compatible. you need to replace the brake shoes and other parts like the springs, etc. because the 4th gen's shoes are smaller since they're only for parking brake and for emergency brake. the shoes will be using the disc as drum (drum in disc). the cable is the same

The people that have posted in this thread that have done the conversion are using mustang calipers which have an integrated parking brake mechanism in the caliper. Therefore, they aren't using any of the stock drum components for the parking brake or 4th gen 4runner parking brake components. Only the rear rotors from the 4th gen 4Runner are used. The caliper and brake pads are from a mustang. I'm unsure what people have used for the parking brake cables.

 

[Ed_C]

The people that have posted in this thread that have done the conversion are using mustang calipers which have an integrated parking brake mechanism in the caliper. Therefore, they aren't using any of the stock drum components for the parking brake or 4th gen 4runner parking brake components. Only the rear rotors from the 4th gen 4Runner are used. The caliper and brake pads are from a mustang. I'm unsure what people have used for the parking brake cables.

Ahh forgot those calipers have integrated parking brakes.

 

[midcoma]

is that self-adjusting? meaning when you have cargo in the back, it will increase the brake pressure in the rear brakes? and when there's no cargo, the rear brake pressure is reduced

No, it's not self-adjusting. I added a Wilwood proportioning valve at the master cylinder. You set it using a dial and once it's set at a value, it stays there. So the brakes will not self adjust for cargo load.

Ahh forgot those calipers have integrated parking brakes.

As Bad Luck said, it's only using the rotor from a 4th Gen. No brake shoes inside the rotor or anything like that. The parking brake on the Mustang caliper is cable actuated.