907
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| posted on 10/4/15 at 07:48 PM |
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Land Rover Master Cylinder Outlets
Hi All,
I know there are several Landy owners on here so I wondered if one or two could help with some info.
I have a duel tandem master cylinder that (obviously) has two outlets.
One is a 3/8 unf and the other is 7/16 unf.
My question is; which goes to the front brakes and which to the rear ?
Many thanks (in anticipation)
Paul G
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JAG
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| posted on 10/4/15 at 09:15 PM |
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It's normally the larger one to the front brakes - front brakes need more fluid displacement 
Justin
Who is this super hero? Sarge? ...No.
Rosemary, the telephone operator? ...No.
Penry, the mild-mannered janitor? ...Could be!
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907
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| posted on 11/4/15 at 06:30 AM |
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Cheers Justin.
The larger thread is the first part of the M/C, i.e. nearest the pedal.
I suspect this is a larger bore so may move more fluid, but I also suspect that both pipes will be 3/16" and that the
reason for the differing nuts may be so they don't get connected up the wrong way; but I don't know that for certain. 
If fitted this way the brake lines will cross over ( X ) the front of the M/C going to the rear brakes,
and vice versa.
Cheers
Paul G
[Edited on 11/4/15 by 907]
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hizzi
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| posted on 11/4/15 at 06:47 AM |
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what is the master cylinder from? landrover defender both pipes feed a presssure reducing valve then split from there. landrover series master
cylinder, front is front rear is rear. early series landrovers with servo are different again i think. i would take the number from the cylinder and
google from there
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907
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| posted on 11/4/15 at 07:04 AM |
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It's a B/M/Cyl 88 Duel opt, part number 569671D.
Not quite the same as my pipes will exit horizontally but I found this pic which shows a cross over.
 
Land rover M/C
Paul G
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hizzi
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| posted on 11/4/15 at 07:48 AM |
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that picture isnt of the same brake layout ithink. what you have is a pre 1980 series landrover master cylinder from a 88" landrover designed to
run 10" drum brakes. pretty sure front connection is front brakes, if i can find my manual or get a hold of my mates motor i will have a look
today for you
landrover did at least three sizes of brakes at that point and some dual circuit stuff and some servo stuff depending on model
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907
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| posted on 11/4/15 at 09:39 AM |
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Cheers Hizzi.
According to Dingocroft who I bought this off, duel circuit brakes were an optional extra on several models.
I assume that those that were to tight to pay more were last seen dropping off a cliff edge. 
Paul G
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