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Old 03-18-2014, 04:44 PM   #1
xplorer55
 
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Exclamation no brakes tried everything help!

I have a 1991 fuel injected samurai, caged and built and street legal. I switched to yota axels disk front and drum rear. I cant get no pressure. I replaced calipers rotors pads, rebuilt the drums everything new. and I tried 1 new samurai mc and 2 used ones and replaced proportion valve. ..no leakes. before I replaced all new stuff I could get pressure n itd go away. but after I put a new mc and stuff on it I get nothing... the used parts I tried came off a 88
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Old 03-18-2014, 07:44 PM   #2
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is the MC correctly bleeded ?? i mean are you 200% sure.. that the only thing i can see
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Old 03-18-2014, 10:39 PM   #3
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Sounds like a lot of air in the lines are you sure it is bled fully?
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Old 03-18-2014, 11:17 PM   #4
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I have vacuum bled it and gravity. Been threw 8 full sized bottles. On my old mc id get fret pressure but it would be gone the minute I stoped pumping like it wouldnt hold. So now I replaced the mc n the new ine moves halfway before even making contact it seems but it seems to semi hold pressure now. And I bench bled it a few times too. Im not getting any more air out of anything n havent for a while.
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Old 03-18-2014, 11:20 PM   #5
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Could it be a bad booster??
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Old 03-19-2014, 02:21 AM   #6
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I also use the vacume to bleed the breaks mostly because I did not have anyone to help me. I had the same issue when I did my swap, The way I fixed it was I had a buddy pump the pedal and whent through every single connection on the break line. Where I found the most air was at the MC.
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Old 03-19-2014, 07:33 AM   #7
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Did you bleed the proportioning valve?
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Old 03-19-2014, 01:07 PM   #8
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get a ~91 subaru legacy master cylinder.... bolt on and much more pressure to the calipers...
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Old 03-19-2014, 05:05 PM   #9
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swaped a few mc back in the day and to get all the air out i had to make a line that screw into the mc and back to the reservoir and pump the pedal that the only way to get it 200% bleeded
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home brew doubler
35 KM2 lockright front, fuzzy rear 5.29 axle gear
yj front, 4link coil rear
kick power steering
New paint
Toy axle

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Old 03-19-2014, 06:30 PM   #10
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Figured it out... it already has the mazda or sub mc. After comparing mc I found that it was longer and longer rod compared to stock... so for the stock I simply used a nut as spacer to make up difference and book bench bleed it again and valves n all my brakes n Im good to go. So now I gota figure out wich mc I had weither it was mazda or subaru
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Old 03-19-2014, 06:32 PM   #11
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Also this time it held pressure. But I got a rediculous amount of air at everything I blead. Wich last time I had solid so I guess I didnt have enough pedal travel to move enougfluid to get it out
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Old 03-19-2014, 06:33 PM   #12
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The only markings on old mc is 2 and 7/8 ... thats it. .my stock just says 7/8
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Old 03-19-2014, 07:41 PM   #13
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Might post a pic of the old one .
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