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Old 14 August 2012, 05:14 PM
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Robbied
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Default Master Cylinder Plumbing

Hi,

Looking to re-plumb brakes on my V2 STi (non-abs)

I'll run a single rear brake line via a bias valve to the rear.

The car has a 4 port cylinder and a rear proportioning valve (that is coming out) but does anyone have a diagram of the OEM plumbing? Or know which ports to use on the master cylinder?

Thanks!
Old 14 August 2012, 05:18 PM
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JonMc
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This is an ABS delete mod, but it show's how to plumb in the proportioning valve...

http://www.jamessimpson.co.uk/impreza-abs-removal
Old 14 August 2012, 05:24 PM
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Nice write up but seems its for a 2 port cylinder?

Which of the 4 ports on mine should I use for a front and a rear feed?!
Old 14 August 2012, 05:50 PM
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The way I read it is the master cylinder outputs are not wheel specific unless the 4-port is different - either tee them in pairs or use 2 and blank 2
Old 14 August 2012, 07:51 PM
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Yeh I did wonder that, unless of course the cylinder is not an equal 50/50 split!!

Any more info anyone?!
Old 14 August 2012, 07:57 PM
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Can't see why it wouldn't be 50/50 otherwise why would you need the proportioning valve
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