Brake line fitment on MC, dist block, prop. valve ??? - Team Camaro Tech
Brakes, Suspension & Steering Conversion questions, Steering & Handling

 
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post #1 of 5 (permalink) Old Jan 19th, 17, 04:42 PM Thread Starter
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Dave
 
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Brake line fitment on MC, dist block, prop. valve ???

I am trying to install the three short brake lines that connect the master cylinder, distribution block, and proportioning valve and having problems with two of them.

The brake lines are new pieces from Inline Tube. The master cylinder is a new correct 5460346 casting......and all of the other parts are originals that came down the assembly line with this car (The brake booster and the distribution block, proportioning valve, and their brackets.)

The fitment of the brake line that goes from the rear port of the master cylinder to the rear of the distribution block is close. It needs a little tweaking but I think it will go in OK.

The two brake lines, however, coming from the proportioning valve and going to the front port of the master cylinder and the side of the distribution block are not even close. With one end of these two lines fixed in place, the other ends are off by an inch and an inch and a half.....This is my first time installing a new set of these lines so I don't know what to expect. This seems very excessive for such short lines.

So my question is......could it be normal for these lines to be off this far and you just have to bend them to make them fit....or do I just have some lines that are bent wrong?

Thanks.....Dave






1968, 327 210 HP, Power Steering, Power Disc Brakes, Custom Interior, 4 Speed, Console, Gauges, Tilt Wheel, Speed Warning, Fiber Optics, 10 Bolt 3.55 Posi Rear end......Owned since 1978.
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post #2 of 5 (permalink) Old Jan 19th, 17, 05:29 PM
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Bobby
 
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Re: Brake line fitment on MC, dist block, prop. valve ???

Looks like they just need to be carefully massaged into place. I know if it were mine, that's what I would do. I have stainless pre bent lines all around in my car and I remember having to do similar tweeking or massaging.

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post #3 of 5 (permalink) Old Jan 20th, 17, 11:42 AM Thread Starter
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Dave
 
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Re: Brake line fitment on MC, dist block, prop. valve ???

Well, I got brave. I loosened components and started pulling, pushing, and bending on the lines......and got them to fit!

It wasn't as hard as I thought it would be. This is actually my first time installing new hard brake lines and I didn't know how much lines that were this short could be manipulated.

I sent an e-mail to Inline Tube with a picture showing the problem. I haven't heard back from them but am curious as to what they will say. I'm not convinced that lines that are only 7 or 8 inches long to begin with and are missing their connection point by an inch and half could be formed right.

Dave


1968, 327 210 HP, Power Steering, Power Disc Brakes, Custom Interior, 4 Speed, Console, Gauges, Tilt Wheel, Speed Warning, Fiber Optics, 10 Bolt 3.55 Posi Rear end......Owned since 1978.
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post #4 of 5 (permalink) Old Jan 20th, 17, 06:57 PM
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Chris
 
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Re: Brake line fitment on MC, dist block, prop. valve ???

Dave,
Wow, that whole setup really looks great and you did a fabulous job of making the connections look professional and better than factory; looks way better than my somewhat hodge-podge just make it fit OEM setup. Just thought I'd comment on the barrel shaped valve under the MC. It's the metering valve (commonly called the hold off valve) often confused with a proportioning valve. It holds off fluid flow to the front calipers until pressure reaches 30-40 psi to allow the rear shoes to expand prior to the front discs starting to clamp on the rotor. I don't know if the '68's have the proportioning valve on the subframe under the driver's seat like many of the '69's do. Good job!

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post #5 of 5 (permalink) Old Jan 20th, 17, 07:18 PM Thread Starter
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Dave
 
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Re: Brake line fitment on MC, dist block, prop. valve ???

Thank you for the nice compliment and the info on the metering/hold off valve.

I knew the function of that valve but sometimes get the name wrong.....which a lot of people do. Sometimes it rubs off on you.

My car does not have the proportioning valve on the subframe. Everything I have read about them is that some cars had them and some didn't and no one knows for sure why some cars got them and others did not.

Dave

1968, 327 210 HP, Power Steering, Power Disc Brakes, Custom Interior, 4 Speed, Console, Gauges, Tilt Wheel, Speed Warning, Fiber Optics, 10 Bolt 3.55 Posi Rear end......Owned since 1978.
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