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201fireman

Brake Line Size

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I am going to a hydroboost system and I need to make new brake lines.  I am looking at the nickel-copper tubing because the reviews say it is easy to use.  I need to know what size the line is that goes from the proportioning valve to the back, the size of the two that go from the proportioning valve to the front wheels, and the two that go up to the master cylinder.  I find them for sale but no where can I find a size.  Any idea? 3/16"? 1/4"?

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The lines from the master cylinder to the proportioning valve should be 1/4".

From the proportioning valve to the rear T-block on the rear, the line is 1/4".

From the proportioning valve to each front wheel is 3/16".

1970 cars will have a hold off valve under the brake booster.

I re-did all my lines with 3/16" stainless and I used a Wilwood adjustable valve that mounts on the master cylinder ports. It's outlet port to the rear is 3/16" so that's what I ran back.

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Ok, I have the classic performance hydroboost kit with the proportioning valve under the master.  All of the fittings on there are 3/16" also now that I look closer.  I guess they want 3/16" so that answers that.  Thanks! 

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