HOW-TO: 5th Gen 4Runner Brakes on an 80

[pocholin]

So I may of missed it but will these brakes work with the stock 16” rims?

I have it on the 16 oem aluminium wheels ,, it a really tight fit

 

[pocholin]

th

I ran the numbers on that electric booster:

I see our brake boosters listed on ebay as an 8/9" booster, and know they are double diaphragm. I'm guessing one is 8, one is 9?
At 18 inches of murcury vacuum, we have 8.8 psi available to act on those diaphragms.
4 x 4 x 3.14 = 50.24 in^2
4.5 x 4.5 x 3.14 = 63.585 in^2
8.8 psi x 113.825 in^2 = 1,001 lbs of assist.

So right off the bat, you're at 40% more assist force. But the bigger difference is that instead of the air having to pass through a little foam filter and a valve and taking time to fill up the booster, this assist is almost instant. Since it's just a "dumb" booster, I don't think it would require modification to anything else in the system if you haven't modified other stuff yet.

that what I probably need for my car.. its cheaper to install a ebooster than make new mods in the axle. I already have 80 series booster and t100 MC .. I have brembo 6 piston caliper.. and big rotor from a nissan armada 350 mm, its brake ok for 40 inch tires but need more to brake a 400 hp 2 ton truck.

 

[Kabanstva]

I have it on the 16 oem aluminium wheels ,, it a really tight fit

Are your wheel weights stick-on (rear barrel) or hammer-on (front face) to clear this brake setup on the stock 16s?

 

[Mademan925]

Jose’s BBK is legit. Easy install. Took slightly longer than a normal brake pad and rotor change. Can’t wait to test the stopping power

 

[Iggmon]

Pardon my heinous ignorance but is there any reason this setup wouldn't work on my '92 FJ80?
I see the knuckle PNs are different in later years but I imagine that is related to the inclusion of ABS..?

 

[richmondbob]

I have it on the 16 oem aluminium wheels ,, it a really tight fit

Being a tight fit, would the brakes heat up more and take longer to cool down with less room between them and the rim?

 

[GW Nugget]

Just saw this, so I will put it here. Landtank has a brake upgrade kit with T-100 stuff etc.

80 series Brake upgrade

This brake upgrade utilizes Wilwood HD brake rotors, larger 100 series calipers and a larger Master Cylinder all while still allowing the use of the factory 16" alloy rims. The kit includes: 2- Rotor hats Socket for installing and torquing mounting bolts Master cylinder - the option for either...

landtankproducts.com

 

[pocholin]

i found that the fjcruiser caliper had de same size caliper of the runner and the disc brake is 31.9 size.. so need to do the same mod as jose did but.. no need to change wheels to 17 size

 

[pocholin]

ok need to use fjcruiser caliper and rotors