WOW!!!! Just noticed, this the 10,000 post in this thread.
Been dickin around with getting my later style aluminum MC installed on the 86. Got it on, rod adjusted between it and the Booster for proper length. Had to shorten the length using the newer style MC and 86 Booster.
The 2 lines going into the "P" Valve on the frame were rusted pretty bad, so ordered 25ft of the Copper/Nickle Brake line.
Iam 79 and have driven a lot of vehicles over the years, and never had to make a metal line.
Watched a lot of YT Vids, so looks easy. Was at Hot August nights in Reno, and picked up a Tube bender.
Then saw another guy using a small one which looked easier, and picked it up at HF>
Amazing deals on this 1/8In-1/4In Tube Bender at Harbor Freight. Quality tools & low prices.
www.harborfreight.com
After fiddling around with it I decided to use the lines off the 85 which had not been tweeked around. Used them as a template to bend the tubing. Seamed like a good idea, although when I installed them nothing looked like the original.
Good thing once attached to the "P" Valve, I could massage the lines around and finally line them up to the MC.
I figured the front and rear lines should be good w/o any air in them. gravity bled the 2 off the MC, and screwed them down.
Took it for a ride down the get the mail 2 miles down the road at the cluster box`s. (Yesterday)
peddle is a bit low, but notice it sinking....HMMM
I do notice lil bit wet under the rear fitting, tighten it down a bit.
Today headed down to NAPA to pick up a brass Barb fitting to make the adapter cap for my Motive Power Brake bleeder.
Then over to Tractor Supply to pick up the 60 Gallon Ingersol Rand compressor marked down from $899 to $299, I bought last month, the day I down`d the 250 because of this brake problem.
This evening headed down to get today,s mail with my wife.
Sitting there at the box`s, pump up the peddle, it holds, then slowly goes down, was showing my Wife what it is doing.
First thought, is it by passing inside the MC?
My buddy drives up, and Iam showing him the problem, open the hood, and the Spring support Bracket, Shock is soaked with BF, and on the ground. I push the peddle while he watches. The fluid if coming out of where the 2 pieces of the valve screw together.
There is a "O" Ring that won`t seal. It is a special Ford "O" Ring.
Back home, out in the shop I have 2 more of the Valves, and thinking of having my welder friend, just weld it together... then Iam thinking....JB Weld it. So one is now doing it`s thing till tomorrow. See if this fix`s it.
This thread shows the valve apart, I JB it just under the smooth part just before the threads. Blasted it off with Carb Cleaner first.
2nd picture shows the 2 pieces.
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks - swap to newer style mc - 86 f150 brake master cyl swap time. got an 87 f150 mc (EARLY BUILD has samepiston size). biggest thing is that with the newer style the ports are reversed from original metal one. need to swap lines front to back...
www.ford-trucks.com
To be continued....
Goat