black89gt

hey guys I have the SN95 5 lug conversion with the SN95 rear end. I just changed out my master cylinder to an SN95 unit.

I bled the brakes thoroughly and now when i press on the brake pedal, its very very stiff when it hits the bottom. It feels like there isnt much pressure before it hits the bottom of pedal travel either. Anyone know what might cause this problem? I was thinking not enough vaccum??

bobbyboura

did you change the booster to if not you may want to or check the push rod ans see if its adjusted right had the same problem when i did my lsc swap on my old notch

black89gt

no i did not change the boster ...and come to think of it, i didnt not adjust my pushrod.... damnit.... well ill test out the brakes tomorrow down the street and see how they feel. if not, out comes the master again...more brakes fluid in my engine bay! YAY! NOT!!!

mjr46

did you bench bleed the MC before installation??? if not pull it and do it

black89gt

yes i did that. I mean the car has brakes, but ill test it out on the street tomorrow to see how it really feels. if no ill pull it out and follow the instructions on how to determine the pushrood length . thanks guys

elite130

I don't mean to hijack the thread, but I'm going to be installing my new '94 GT master cylinder this weekend and this thread brought up a couple questions...

1) How do you "bench bleed" the m/c?
2) Where are the instructions on how to determine push-rod length?

Thanks for the help!

black89gt

well guys i knows its bene over a year, but i adjusted my pushrod, and still no luck...

any help?

Tony71502

Did you change to a 5 port prop valve or rig up the stock valve to work? The sn95 mc has 2 ports compared with the stock 3 port fox mc. When i put the 93-95 "cobra" mc, which im sure is the same as all sn95 mc's, I had to use a diff prop valve, remove the plunger to disable the proportioning effect, then add an adjustable valve in the front to rear line.

What are all your brake system mods? You have 4wd right?

black89gt

4wd? wth are you talking about?

I have the 3-2 Port conversion with an sn95 master cylinder. And no, I did not change the proportioning valve out to a new one, i left the stock one in there..

Im getting fed up, and Im about to just install the stock fox Master in there and call it a day.. It had better brakes with the fox mc anyways.

Tony71502

4 wheel disc is what i meant by 4wd. Or did you just install the newer MC with drums in the rear still?

I haven't looked into this set up too much, but I take it that you did something like this with your lines.

http://mjbobbitt.home.comcast.net/~m...g/product.html