so im doing the mc and booster upgrade on my 85 4runner and i wasnt paying attention when i ordered parts. i ordered the MC off of a 95 4runner instead of a 94 LC. my question is will it still work/ does it have the 1" bore that the LC MC has

 

95 4runners came with 1" bore MC. Two styles, ABS and non-ABS. Are you running disk or drum brakes in the rear?

chris

 

im running drums

 

I believe every V6 2nd gen 4runner had a 1" master, thats what I'm running on my 87.

From Pirate
"Brake Master Cylinder info
In addition to the Rotor swap, some people like to put bigger MCs in so that they have more fluid movement.
In this case, you want to acquire a Master Cylinder for a V6 truck or 4runner. It should be the 1" Bore. This is pretty much a bolt in replacement. Requiring you to move some brake lines slightly at worst."
http://www.pirate4x4.com/forum/showthread.php?t=251887

 

awesome thank you! i guess i didnt mess up too bad then

 

I have a brake booster and master cylinder off of a 92 or 93 4Runner on my 86 4Runner, and it works good and was a nice improvement over the stock set up.

 

do you have drums or discs in the rear?

 

Stock drums in the rear and stock discs up front, but i plan on upgrading to vented rotors and V6 calipers in the front in the near future.

 

so just letting people know. it installs fine i just have to bleed the brakes tomorrow to see if my braking has improved

 

i finally got time to bleed them. first off i found out that whoever owned the truck before me never bled the lspv it was puking out what looked like oil so i gravity bled the whole system. secondly autumn (my truck) stops amazing now! first time i stopped i almost put my friend into the windshield

 

in addition to swapping the master cylinder, consider getting a dual diaprahm (sp?) booster
out of a turbo 86-87 or T100, probably a couple of other sources) but it would help that larger master cylinder reach its full potential

 

You can use a duel diasphragm brake booster from any 89-95 truck or 4Runner on our trucks, i have a duel diaphragm brake booster and master cylinder from a 92-93 4Runner on my 86 4Runner and it made a nice improvement to my braking.

 

I to have a booster and MC from a 92 4runner v6 on my 88 . I actually just installed it because it looked better than what was on my runner when i bought it .

I know the mc is a 1" , but how do you know if the booster is a dual diaphram booster?

 

the booster will be longer/stick out farther. and i have one from a 95 4runner on my truck

 

The duel diaphragm booster will be alot wider front to back then the small thin one used on 84-88 trucks and 4Runners.

 

hey i have a question i have a 82 Toyota pickup come into my work and it has a break problem some on put a fj axle under the front of it to have vented rotors and now it wont stop i think it cause the MC is to small so i was wondering what i should put on it

 

For the booster, get one out of a 90-95 2wd truck that has a dual diaphram booster. They are the smaller size like the turbos had.