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05-06-2023, 01:49 PM | #1 |
Registered User
Join Date: Oct 2020
Location: ca
Posts: 104
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what brake line do i need for disc conversion kit?
I just started a drum to disc conversion on the rear of my 72 k20 truck. I bought the bracket and calipers from lugnut4x4. i didnt think of purchasing the brake lines. I thought i could reuse what i had but it didnt work. what brake lines can i buy locally to finish up my kit? is there a particular year and model i need to ask for?
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05-06-2023, 10:00 PM | #2 |
Senior Member
Join Date: Dec 1999
Location: TX
Posts: 1,588
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Re: what brake line do i need for disc conversion kit?
You are going to need to shorten the hard lines and put a new flare on the ends. you can then get whatever line you need...
Assuming your calipers have 10mm or 3/8 banjo fitting. you could get something like this: https://www.summitracing.com/parts/rus-657302 With an AN to Flare adapter like this: https://www.amazon.com/Allstar-Perfo.../dp/B003C01D3I Maybe someone will chime in with a good part number for a less expensive rubber line that will go from the hardline inverted flare to a banjo fitting... |
05-06-2023, 10:04 PM | #3 |
Senior Member
Join Date: Dec 1999
Location: TX
Posts: 1,588
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Re: what brake line do i need for disc conversion kit?
I looked a little more and here are some banjo to inverted flare hoses...
https://www.summitracing.com/parts/ops-hk4-24 Summit has many others. What Calipers does your brake kit use? |
05-09-2023, 04:32 PM | #4 |
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Join Date: Oct 2020
Location: ca
Posts: 104
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Re: what brake line do i need for disc conversion kit?
the kit came with 1976 Cadillac Eldorado brake calipers w/ the parking brake set up.
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05-09-2023, 08:47 PM | #5 |
Senior Member
Join Date: Dec 1999
Location: TX
Posts: 1,588
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Re: what brake line do i need for disc conversion kit?
I looked up those calipers and they take a 7/16-20 banjo bolt.
Here are a bunch of brake hoses that would work. https://www.summitracing.com/search/.../universal/yes You will still have to cut the hardline shorter and re-flare. I have one of these flare tools for 3/16 line and love it: https://www.amazon.com/dp/B06XPRVCPV/ |
05-09-2023, 08:57 PM | #6 |
Senior Member
Join Date: Dec 1999
Location: TX
Posts: 1,588
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Re: what brake line do i need for disc conversion kit?
I would weld some tabs like this on the axle:
https://www.summitracing.com/parts/a...0029?rrec=true I get lines that have the 7/16 banjo on one end and 3-an on the other. Then use an adapter like this: https://www.summitracing.com/parts/rus-641291?rrec=true The adapter will clip into the above bracket with clips like this: https://www.summitracing.com/parts/wil-300-6416 |
05-09-2023, 08:59 PM | #7 |
Senior Member
Join Date: Dec 1999
Location: TX
Posts: 1,588
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Re: what brake line do i need for disc conversion kit?
I was going to recommend a kit like this: https://www.summitracing.com/parts/clp-rbhtk?rrec=true
But, I'm not sure those clamps are big enough to fit around your C20 rear differential. The kit is recommended for 3" diameter differential tubes. |
05-10-2023, 01:32 PM | #8 |
Registered User
Join Date: Oct 2020
Location: ca
Posts: 104
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Re: what brake line do i need for disc conversion kit?
Thank you, Jason. You went above and beyond in helping me. Ill let you know how it goes.
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