I will only do this for you once.

https://www.yotatech.com/forums/f116...runner-167379/


I found that with literally 7 seconds of searching. The frustrating part is that ALL the info is already out there, and you refuse to search for it. It has nothing to do with being rude, or correcting spelling, or anything else. You just simply refuse to search, or are incapable of using the information you do find.

If you still can't figure it out, head over to Pirate. Its Tuesday after all.

 

according to some websites the larger v6 calipers are the same from 88-95. Which means ALL v6 IFS calipers are the same. I just did a bunch of reasearch on this, but only after I did my complete brake job. grrr. keep in mind after doing this the smaller 4cyl master cyl might feel a little spongy when using the v6 calipers. An upgrade to the 1" bore master cyl from the same trucks might be in order as well. What confuses me is will they work on the 4cyl IFS rotors or not. my guess is yes.

 

I still have the 87 rotors, but with 95 calipers. Works fine.

 

87 Rotors are actually thinner than the 95 rotors, but they are the same diameter. The 92-95 V6 calipers are wider as well, but they would still work. The only thing you CAN'T do is use 91-earlier calipers on a 92+ 4Runner, but who does that anyways

 

thanks for the info, maybe I won't have to put a second set of new rotors up front then haha. You still on the 4cyl master or did you upgrade that too. How is the pedal travel if you have the 4cyl master.

 

Maybe that is why they mention the pedal travel being low when using the v6 calipers and 4cyl master?

 

Thanks for the information. I'll get the newer rotors when it's time to replace them.

I'm swapping to the newer booster and master cylinder. The old one works fine, but others say it's a worthwhile upgrade, so I'll do it. I'll post up afterward to share my opinion.

FYI, my brakes are off a 95 reg cab pickup, with a 4 cyl.

edit:removed incorrect information

 

DC's information made me curious, so I did some research. I assumed since my 95 calipers had 4 equal sized pistons, that they were the same as the v6 calipers. I was wrong. The v6 rotors are almost 1/4" wider than the 4 cyl rotors, and the calipers are wider to match.

So, the 95 4 cyl brakes were an upgrade for my 87, just not the 'best' upgrade since my rotors are still thinner. I did notice a vast improvement in braking power after the swap, however.

Also, I swapped the dual diaphragm booster and 1" master cylinder last week, while my truck was in the shop. After the test drive yesterday, I noticed the brakes perform extremely well. I recommend this mod to all you guys with the older braking systems.

 

I'm running '94 v6 brake calipers, mated to a solid front axle utilizing '87 FJ60 application vented and drilled rotors from brake performance, and a land cruiser master cylinder. The truck will screach to a halt. I mounted the master before running the v6 calipers and the pedal required more pressure to operate. Once I changed to the vented rotors and the v6 calipers the pedal pressure returned to normal and it stops like a dream.

 

for you earlier guys running the v6 master, I have a quick question that got me confused while looking at the autozone website. They mention the size of the fittings on the 87 are M16 X 1.5 and the newer v6's are M10 X 1.0. is this accurate and if so how did you fix the line diameter issue?

 

The older master cylinder has an M16 to M10 bushing in the rear line on the master cylinder. The newer master cylinder does not require the bushing. However, you will need the front brake line for the newer master cylinder, since they are different.

Notice the front line goes up, then to the tee...



See the difference on the new master cylinder...



Side by side comparison. Note the shiny bushing for the rear line...



I know the pics aren't perfect, but you get the idea. You will reuse the rear line, and the lines to the tee.

 

yeah I think I follow, I knew the front line attached at a different angle and expected that. It's funny because the napa site says the older ones are m10 as well as the newer ones. lol.

 

Other than slight bending of the line, the one I purchased from All Pro went right in, old lines and all. The cab and lines are from an 87 automatic but I wouldn't think that would make a difference

 

I just picked up a brand new 1" bore MC w/resi from autozone for a 94 t-100 v6 1/2 ton. $65. Only drawback is I loose the level sensor I guess. Which I believe would have happened anyway with the upgrade.

gonna go next week probably to look for a dual diaphram booster from a junk yard to go with it. Should have the MC installed today or tommorow.

 

It still has a level sensor, you just need to get the correct plug from a wrecking yard and wire it in.

 

thanks for the note good to know. None of the DIY's on the MC covered the level sensor.

A T-100 might be hard to find in a yard though.

 

WOW!!!!! what a difference the 1" MC made on the OEM 4cyl calipers. Of course it probably didn't help when I pulled the original off that the back side was full of brake fluid. Obviously my MC was shot to begin with. So you could imagine what the difference is. No more spongy pedal but do have to push a little harder now. Now I will be ready for the v6 maybe t-100 calipers when I do decide to get them.

 

Just an FYI for everyone. I too have a 4 cylinder, single cab pickup(1994), and it has the good calipers on it from the factory. I thought the pistons looked the same size, so I pulled them off this morning, and all the pistons measure the same, and are stamped "S12W". Just thought Id post up, letting people know they may already have the good calipers.
The rotors are .800" thick...not sure if that is the V6 rotors or not. Now Im looking for the 1" bore MC, and possibly the better booster. What years can these two parts come off of? And is there any way to visually see that a booster is the "dual diaphram" style?
Thanks guys!

 

lol look up for the comparison of the booster. What ever you find the boosters on will have the 1" master. I would be curious as to if you already have the 1" master and dual diaphram booster.

 

After looking at a bunch of pictures, it seems the dual diaphram boosters have an additional "bump"...for lack of better terms. If this is true, then yes, my truck has the additional "bump" on the booster.
Now...all I need to do is pull the MC and check the bore size. Im not sure why my truck would already have these components, but do know that I have more gauges in my gauge cluster, compared to a friends truck. Was thinking maybe its a different trim level, and thats why it has the better braking components...? I dunno.
I need to rebuild my calipers to hopefully get rid of the hard pull to the left under braking, and I should be good to go. Thanks for all the input!