We got done with our SAS this weekend and when we went to bleed the brakes i cant get any pedal at all. The pedal will go to the floor even after pumping several times and is even easier if the truck is running. Replaced master and checked out the booster. All the lines are tight and unrestricted. The whole system has been bled along with the master cylinder. BTW this is an 86 pickup with the TG 4" IFS Elimininator kit and Classic Rear.

 

What calipers did you use? Sounds like you've got a leak somewhere. What did you do with the LPSV??

 

I used my 86 calipers with the new rotors and did raise the bracket for the LSPV on the axle. Its about centered in its travel. Ive checked and double checked all the lines and bleeder screws.

 

This sucks. I spend 2 weekends with the lift just to get screwed by the brakes? What am i missing?

 

I had the same problem after my SAS. I wasn't able to get the brakes tight enough no matter how much I bled them. Fortunately I lived basically right across the street from a service place so I drove it over there and had them power bleed it and it took care of the problem...

 

You didn't put the calipers on the wrong side on the front did you? As in the bleeder at the bottom?

Gravity bleed or power bleed.

 

Exactly what I was thinking.

 

Yeah I used the 86-87 calipers on the rotors that came with the kit, no real problems (maybe a little pulsating but I probably need to machine the rotors is all).

 

yea the calipers. still aint got a good pedal even after being bled a couple times. i guess ill bring it to get powerbled somewhere

 

it's still going to feel somewhat mushy once it's bled in right, it'll take some driving to feel better.

 

i know mine never felt as tight as they were before the swap, but I could lock up all four corners no problem with 35s so they were tight enough...

 

Good deal. Im steppin up to 35" Mud Dawgs when my wheels come in. Ill also replace the shoes an get it bled at the same time. Its driveable but it'll just take gettin used to.

 

i have to pump my brakes a bit to get full stopping power, just slammin on them will take a while to stop, but i have learned to drive with them.

what i think the problem is, is that there is not enough fluid in the system to compensate for the extended brake line, when the brake lines are extended it requires more fluid to fill more brake lines.

so a fix, that some have done is install a larger brake master cylinder, to have more fluid flowing in the system. marlin sales a larger one, and i belive its off an fj80 or something.

 

If the master cyl is full then brake line length shouldnt have any effect on stopping power. Your calipers are still moving the same distance, therefore shouldnt require any more pressure.

Someone correct me if I'm wrong here...

 

that makes sense, i had it a bit wrong, when the cyl is full there is enough fluid to fill all brake lines and the resivour, but with a larger master cyl, with a larger piston like the fj80 cyl is able to push a higher volume of fluid for increased braking power.

heres the one marlin sales
http://www.marlincrawler.com/htm/brakes/mcylinder.htm