Brake line sizes, nuts and routing - Defender Source
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  #1  
Old November 13th, 2012, 09:07 AM
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Bill Adams
66 109 sw 94 lwb
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Brake line sizes, nuts and routing

OK For my MC, which is the early type, the front hole is either 3/8ths 24 or 10 mm, and the rear hole is 12mm, I think.
The front hole serves the front brakes and the rear hole serves the rear brakes.
So the larger port is for the rear, which in my case needs a proportioning valve as I have discs back there. I'm not too concerned about the port sizes and stuff as I have God's own flare tool and the line and the nuts are pretty cheap.
What I don't have is any frame of reference. The fronts are dead simple; MC port to 3 way T to each side. Rears, not so clear. I think that the 1/4 inch line is supposed to go to a proportioning valve and then to the rears. There are plenty of these buggers out there. Wilwood makes a simple knob-adjustable one that you can fool with until you get the feel you want. Jegs has them from about 35 bux all the way up to over 100.
The OE Rover one appears to be a lockheed unit as used on Volvo 2/7/940s, and is non adjustable. It looks to have 12mm in and 10mm out. It is mounted somewhere down on the frame or something? As opposed to an aftermarket one that would be mounted up near the MC for access.
Guess I'm looking for any ideas regarding the proportioning valve and the best way to set this up.
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1966 109 5 door wagon 300Tdi "spermaceti fueled"
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  #2  
Old November 13th, 2012, 11:22 AM
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Why not just copy the original system on the 110 or on a NAS D90? Personally I would be inclined to copy the one on a NAS D90 as it is closest to what you have brake system-wise with the rear brakes being discs. The proportioning valve is located on a bracket on the passenger side frame rail ahead of the bulkhead.

http://www.ebay.co.uk/itm/LAND-ROVER...item3368486553

Here is a picture

http://www.eastcoastrover.com/229.html
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Old November 13th, 2012, 11:30 AM
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Bill Adams
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Sorry to say I can't see it in any of those ECR pics
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1966 109 5 door wagon 300Tdi "spermaceti fueled"
1994 RRC LeWiB "ruining the air behind me"
1968 2A 88

All my troubles are Rover
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  #4  
Old November 13th, 2012, 11:35 AM
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Charles Galpin
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If you want to replicate a 90 I can take pics, or you can eyeball one of the trucks at HH
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Old November 13th, 2012, 11:41 AM
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Quote:
Originally Posted by o2batsea View Post
Sorry to say I can't see it in any of those ECR pics
Fifth picture down. Passenger side of truck.
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Old November 13th, 2012, 11:48 AM
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Bill Adams
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Oh ya, that truck has the type 80 MC with the two front ports. Mine is the cast iron late S3/early 110 50 type with the smaller diameter booster and single port for the fronts and rears.
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1966 109 5 door wagon 300Tdi "spermaceti fueled"
1994 RRC LeWiB "ruining the air behind me"
1968 2A 88

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  #7  
Old November 13th, 2012, 12:17 PM
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You are going to run single circuit brakes?
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