1ton MC on toy breaks

[Paulie]

How do they work, i have IFS calipers and rotors up front with rear drums. about to install my 1ton GM master cylinder as soon as i figure out fitting sizes. Anyone running it, hows it work. eventually i ll have rear disks

 

[CrustyJeep]

A little large for rear drums, so you may have a very hard pedal (nothing wrong with that) but not a lot of breaking force.

 

[mudracer]

I run a 1979 Trans Am M/C that was for 4 whl discs, cant tell a bit of difference from the regular one... with rear discs.



i like the cost part of it the most, i think.

14 bucks, no core. :beer:

 

[jakeo]

I had the 1 ton master with rear toyota disks and dana 44 front disks. The pedal was too stiff with the stock booster and I had a hard time stopping the truck. Now I am running the dual diaphram booster and 1/2 ton GM master. This seems to be a good combo for me. If you are buying a master cylinder, I think you should buy the 1 1/4" bore master cylinder.

 

[Snowrunner]

I have discs all around with a stock yota mc on it and it works fine for me good pedal lots of stoppin power. I can lock up 35's like there nothing.

 

[84Toyota4x4]

I think with that big of a MC you will have a VERY firm pedal. I have a 1" bore on stock 84 calipers and stock rear drums with all SS braided lines and the pedal is almost too firm for me. I have some 95 V6 4Runner calipers (two large pistons) that are going on eventually, and I'm doing a disc swap in the rear also eventually, so hopefully it will soften up with that setup. Bigger isn't always better... Too much MC and not big enough calipers or wheel cylinders is a bad thing, theres no where for all that fluid movement to go, thus giving you a firmer pedal, and taking more pressure to do the same amount of stopping, which is what happened to me when I went from a 13/16 MC to a 1". Pedal got MUCH firmer, and I have to press pretty damn hard on the brakes to get the truck to stop/lockup. I was tempted to go back to the smaller one just until I got the new calipers in, but decided I was too lazy, haha. Check out the link for some reading about the hydraulic ratios, good info. My truck will work out to just .5 under the stock setup when I go to the larger calipers with my MC and the volume of the rear discs taken into account vs the volume of the rear wheel cylinders so pedal should feel stock, but with bigger brakes

http://home.4x4wire.com/erik/4runner/brakes/

~T.J.

 

[Paulie]

ive read that one plenty times. i have the 1 /14 MC from GM and used it on my last toy but it had the big breaks. i also have a toyota 3rd gen V6 MC, would that be any better. these breaks work fine its just i have no rears barely

I think with that big of a MC you will have a VERY firm pedal. I have a 1" bore on stock 84 calipers and stock rear drums with all SS braided lines and the pedal is almost too firm for me. I have some 95 V6 4Runner calipers (two large pistons) that are going on eventually, and I'm doing a disc swap in the rear also eventually, so hopefully it will soften up with that setup. Bigger isn't always better... Too much MC and not big enough calipers or wheel cylinders is a bad thing, theres no where for all that fluid movement to go, thus giving you a firmer pedal, and taking more pressure to do the same amount of stopping, which is what happened to me when I went from a 13/16 MC to a 1". Pedal got MUCH firmer, and I have to press pretty damn hard on the brakes to get the truck to stop/lockup. I was tempted to go back to the smaller one just until I got the new calipers in, but decided I was too lazy, haha. Check out the link for some reading about the hydraulic ratios, good info. My truck will work out to just .5 under the stock setup when I go to the larger calipers with my MC and the volume of the rear discs taken into account vs the volume of the rear wheel cylinders so pedal should feel stock, but with bigger brakes

http://home.4x4wire.com/erik/4runner/brakes/

~T.J.

 

[cheesemaker]

Have you tried to adjust up the rear adjusters? If your not getting much braking out of the rears then the adjuster might be frozen! On my old nissan, whenever the rear brakes felt really soft or almost nonexistent, I would pull the drums and adjust them up, and problem solved!

Alot of people have been using a fj80 m/c with good results, this is the only m/c that Marlin recommends and sells!

 

[Paulie]

right now i have it up all the way and it drags the brakes allitle, so im gonna take it down alittle so it should be okay. the only why i asked is because soon ill have disks in the rear and with this MC is too weak to pump that much