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#1481227 12/31/2022 7:29 PM
Joined: Feb 2022
Posts: 162
L
'Bolter
'Bolter
L Offline
Joined: Feb 2022
Posts: 162
What brake line size should you run for rear huck brakes? Fronts are converted to disc, cpp master cylinder and booster mounted under floor.


1953 with a 216
Luray #1481256 12/31/2022 10:17 PM
Joined: May 2015
Posts: 9,830
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
Joined: May 2015
Posts: 9,830
It really doesn't matter much what size the line is. The only time it makes a difference is if there's a lot of flow causing pressure drop with smaller lines. But a brake system is basically static, meaning that there isn't pressure loss in the lines, and pressure coming out of the wheel cylinders to the shoes is dependent on the area ratio of the master cylinder and wheel cylinder pistons.
I'd use what the original Huck cylinders used (probably 1/4" - that's what the Bendix system on my '51 used.)


Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
Luray #1481259 12/31/2022 10:37 PM
Joined: Feb 2016
Posts: 1,841
7
'Bolter
'Bolter
7 Offline
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Posts: 1,841
Use the diameter that was original with the wheel cylinders, otherwise you will have to use reducer fittings to change line size, you may have to adapt to a different diameter once you get to the proportioning valve.


1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy

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