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Hey guys. Lately I’ve noted some idling issues when pumping hard on my brakes, and I have wondered about the larger caliper upgrade for a while. I decided to start collecting parts and swapping a few things. I grabbed a pair of V6 calipers from my local pick and pull (2nd gen runner) and ordered a caliper rebuild kit from Toyota. Got them ready to drop on the truck. I have a V6 brake booster but did not want to put it on if not needed, I’ve read a lot of guys having clearance issues. I bought a reman V6 master, oem is NLA. So that I didn’t take the truck down for too long, I decided I would just replace the master today. I bench bled it and did the swap, only took a few minutes. I put a new oem check valve in the brake booster also having a feeling that my idling down was related to that. Anyways, I do not have my calipers installed yet because I’m still waiting on the pads/shims/hardware to arrive from Toyota. What is the expected result on the brakes after only installing the master? It feels like I don’t even have power brakes anymore, rock hard. Still have plenty of power assist with the old master installed.
I’m thinking about doing the same upgrade on mine soon so i’ll be following your posts. From what i remember reading, I believe you are going up to 1” piston on that new master so without the larger calipers in place, you expect a hard pedal.
I’m thinking about doing the same upgrade on mine soon so i’ll be following your posts. From what i remember reading, I believe you are going up to 1” piston on that new master so without the larger calipers in place, you expect a hard pedal.
this was my logic, but I wanted someone to tell me for reassurance ha.
Here are some part numbers I’ve collected, maybe they will help someone.
calipers are the ones marked as S13WB
pads - 04465-35061
shim kit - 04945-35040
clips - 90468-12019
pins - 90240-06014
MC gasket - 90430-06104
here are some pictures of my caliper rebuild and the MC install. It should be noted also that when I rebuilt my rear drums a few hundred miles ago I swapped in 1” bore slaves from an FJ60.
I’m confused on what you’ll need for rotors. I would expect whatever truck the calipers came from would work but have seen other people use FJ 60 rotors. What is your plan?
I’m confused on what you’ll need for rotors. I would expect whatever truck the calipers came from would work but have seen other people use FJ 60 rotors. What is your plan?
well, the solid axle guys all swap over to IFS rotors. But I’m already IFS so I guess I don’t really see the need for a rotor swap. Maybe someone will chime in, but I don’t see the need.
well, the solid axle guys all swap over to IFS rotors. But I’m already IFS so I guess I don’t really see the need for a rotor swap. Maybe someone will chime in, but I don’t see the need.
There are '89 to '91 V-6 IFS rotors and calipers and there are '92 to '95 IFS V-6 rotors and calipers. The later calipers are larger and the rotors are about 5mm thicker.
These rotors and calipers must be used in their correct pairings.
There are '89 to '91 V-6 IFS rotors and calipers and there are '92 to '95 IFS V-6 rotors and calipers. The later calipers are larger and the rotors are about 5mm thicker.
These rotors and calipers must be used in their correct pairings.
are the '88 v-6 calipers the same as the '88 22re calipers? and different than the '89-'91 v-6 versions?
There are '89 to '91 V-6 IFS rotors and calipers and there are '92 to '95 IFS V-6 rotors and calipers. The later calipers are larger and the rotors are about 5mm thicker.
These rotors and calipers must be used in their correct pairings.
great knowledge thank you. I pulled these calipers from a later model second gen, the ‘VZ13’ P/N stuff has been working for the calipers from parts drawings. So I guess I need to order the rotors.
Is that part number 04479-60020 for one brake caliper or is it for the pair? How did you clean those rotor so well? I just got a pair of S13WB from a 93 4runner. I am currently cleaning it getting it ready to rebuild. Thank you for this thread.
Is that part number 04479-60020 for one brake caliper or is it for the pair? How did you clean those rotor so well? I just got a pair of S13WB from a 93 4runner. I am currently cleaning it getting it ready to rebuild. Thank you for this thread.
the rebuild kit covers both calipers. You will want some of the “cosmo” grease on hand though. Toyota supplies just enough to slick up your finger.
i do see a lot of threads about converting to v6 brakes, but i have to be honest, the brakes in my '87 work excellent as-is, even running 32x11.5x15 tires. i do a modest amount of off-road work, too, and they seem to work well for that. i have the donor parts available for one conversion from my '88 3.0 4runner, but it seems like a lot of work for a minor gain.
not saying it's not something to do, just wonder how much better the braking will be? any thoughts @millball?
i do see a lot of threads about converting to v6 brakes, but i have to be honest, the brakes in my '87 work excellent as-is, even running 32x11.5x15 tires. i do a modest amount of off-road work, too, and they seem to work well for that. i have the donor parts available for one conversion from my '88 3.0 4runner, but it seems like a lot of work for a minor gain.
not saying it's not something to do, just wonder how much better the braking will be? any thoughts @millball?
this is very true. I think the factory brakes do work excellent. I would not be doing this if mine weren’t giving me issues. Instead of replacing the factory ones with the same, I’m spending the same money, maybe less, to replace with better.
i do see a lot of threads about converting to v6 brakes, but i have to be honest, the brakes in my '87 work excellent as-is, even running 32x11.5x15 tires. i do a modest amount of off-road work, too, and they seem to work well for that. i have the donor parts available for one conversion from my '88 3.0 4runner, but it seems like a lot of work for a minor gain.
not saying it's not something to do, just wonder how much better the braking will be? any thoughts @millball?
I only changed out the rotors and calipers on my '87, leaving the stock 22RE master cylinder and booster as factory built.
I may have lost a slight bit of pedal height under pressure, because the larger calipers want a little more fluid volume, but braking pedal effort seems a bit less.
I did this mod mostly because I had some decent newer components laying around, and the '87's brakes and bearings needed attention in any case, so I saved a few $$.
I changed out the hubs, bearings and rotors complete, and had no choice but to use the newer large calipers to complete my job.
It was a small, but noticeable improvement. I'm happy with it.
I have 1991 4Runner that was built in June of that year. It has the 1" bore master cylinder as many of you would know that. But when you get to July the calipers and rotors changed in the 4Runner. The calipers are slightly wider and have larger diameter pistons. Also the brake rotors are thicker, both are very good things for brake performance. You have to swap out both calipers and rotors or the pre 07/1991 calipers will not accept the later rotors and while the earlier rotors will go into the later calipers the rotor thickness is smaller so you chance the expulsion of the calipers pistons when the pads are worn out. The brake pads are unchanged for both the pre and post mid 1991 brakes so no change there.
I can tell you that the modulation and pedal feel is awesome with the larger pistons in the calipers. I use "Power Stop" brake kits and have installed four of these in vehicles I have owned that they made parts for. The drilled and slotted rotors with the corrosion proof finish are always an improvement with the performance and quickly bedd-in because of the slots in the rotors surfaces. Chirping the front tires is an effortless task once the brakes are well seated and bedded in. As the 91 4Runner does not have ABS on the front axle this is a very real occurrence with panic stops.
Putting disks on the rear axle is in the future and the Economy Trail Gear kit (304981-1-KIT) uses the calipers and rotors from the early 80's 4x4 axles so the consumables stay Toyota. I like that idea better than swapping in some GM crap! The only problem is I will have to swap in my 1982 transfer case behind my R150F gearbox and then I can get a disk brake modification kit for the parking brake to be applied to the rear drive shaft. I need to do this in order to allow the rear end to have more droop because the parking brake cables limit how much droop you can obtain beyond the OEM shock length. It seems with only slightly longer shocks that will allow more droop two things happen. The parking brake cables get stretched and the drive shaft swings into the fuel tanks skid plate and the side of the fuel tank. I will have to reposition the panhard rod mounting bushing at the frame once I get the ride height set correctly for the rear suspension. I know this is not a problem for the leaf sprung rear suspensions on the pickups because I had an 1982 model and the parking brake cable routing is quite different on the axle housing.
I had enough parts to start into the hub area brake parts today. I’ve included pictures of the part numbers I’ve collected. I’m having one concern right now and that it that the new rotors I received are the same size/thickness as the ones I pulled off. I was under the impression the V6 rotors were larger. The calipers definitely have a larger space in them. If someone could verify that I’m on the right/wrong track here I’d really appreciate it. Oem setup New parts and caliper put together with all hardware New rotors on Trimmed the dust shield, test fitted with new caliper
08-18-2020, 01:58 PM
