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  #1 (permalink)  
Old 01-30-2020, 11:42 AM
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Q about custom ordering brake hoses

Hei
I need to have a set of brake hoses custom made, with 3/8-24 IFF male in one end and AN3 female in the other end.

All web pages that offer this, don't list alternatives as "3/8-24 AN3" and "3/8-24 IFF".
They just list "3/8-24".

I don't understand that. I know the threads are the same but you can't mix 45 degree IF cones and 37 degre single flare cones??? How do they know what the customer need?
I made an illustration to avoid misunderstandings. See enclosed photo (the fittings are just to show what the brake hoses must fit against.)


One of them answere this on my quote:

3AN in threads is 3/8x24 so you are looking at a Male swivel 3/8x24 to Female swivel 3/8x24
My unions are dual seated so will seal against a convex or concave flare
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Old 01-30-2020, 12:12 PM
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Are you against an adaptor fitting and using more common hoses?
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Old 01-30-2020, 12:43 PM
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The AN3 end of the hose will be fastened against a Thru-frame fitting. The 3/8-24-IFF end wil be fastended against a 90 degree 1/8-NPT x 3/8-24 IFF adapter that sits on the caliper.
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Old 01-30-2020, 02:02 PM
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Sounds like you got it figured out already. If your gonna have them made, might get an extra to save hassle down the road in the even of replacement is needed.

Your right, most web pages are shy on specs. I go for the paper catalogues typically when looking for this kind of stuff. Either that or just call your favorite place.
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Old 01-30-2020, 02:16 PM
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I haven't found any univeral hoses with the specs I need.

Another alternativ is to use Speedway Motors adapter 6172060 (enclosed photo) attached to the IFF port, and a regular hose with straight AN3 in both ends.
But even if Speedway call this a brake fitting, I have been warned by others to 1: Use an o-ring fitting in my brake system, especially against a female port that hasn't ano-ring groove (even if Speedway also claims this isn't necessary), and
2: Fasten a flat nosed male 3/8-24 fitting into a 3/8-24 IFF female port.

I decided this became too much creativity in an area where creativity isn't always good, so I go for a custom made hose with correct fittings instead.
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Old 01-30-2020, 02:28 PM
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Don't use an o-ring fitting, at least not a rubber o-ring, in a brake system. If you need a sealing solution like that, it needs to be a copper or aluminum crush washer type of sealing ring. Rubber is not good enough.

Or was your last post supposed to say "warned not to use a o-ring fitting"??

What about using a common banjo fitting with crush washers that can be pointed in any direction needed, at the caliper end of the hose??

A few pics here of your caliper and general area/frame could get someone's brain fired up to the best solution.
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Old 01-31-2020, 02:02 AM
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Quote:
Originally Posted by ericnova72 View Post
A few pics here of your caliper and general area/frame could get someone's brain fired up to the best solution.
I already had a long thread about that, and I received lots of valuable information from the forum members.
And I'm not going to use the rubber o-ring fitting, as adviced.

Short story:
1. Caliper has 1/8" NPT fitting. Wilwood.
2. 1/8" NPT x AN3 adapter plus AN hose w/ 90 degree bend interfere with the suspension lower A arm at full turn, so that's out of the question.
3.Some other kind of 90 degree adapter plus straight brake hose interfer with calipers lower sliding bolt.

A combination that will work is a 1/8" NPT x 3/8-24 IFF 90 degree fitting pointing 45 degrees out/forward, and a brake hose with a 38/-24 IFF end with a 45 degree end.

So I would like to focus back on my initial post, to ensure that I get it correct when I custom order the brake hoses.
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Old 01-31-2020, 04:07 AM
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A misprint in my last post!

Corrected:
A combination that will work is a 1/8" NPT x 3/8-24 IFF 90 degree fitting pointing 45 degrees out/forward (as shown on the photo) and a brake hose attached to this, with 38/-24 IF male 45 degree bent end.
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Old 01-31-2020, 05:29 AM
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I take it an 1/8" pipe thread to AN adapter 45 or 90 elbow won't clear the caliper itself to even be able to screw it in??

It looks like a 45 might. Such as this:

http://www.russellperformance.com/mc...ges/660932.jpg
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Old 01-31-2020, 06:11 AM
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That's correct. It's not possible.

I am in contact with a company that custom make brake hoses. Have a good communication and they seems to be ok.
https://www.hosetechnik.com/

They offer custom made hoses accoring to my needs for less than 20 USD a piece, pluss freight.
Not many adapter fittings and stuff to buy before it gets more expensive than that either.
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Old 01-31-2020, 08:05 AM
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And now I see that their 3/8-24 fitting probably won't work either.
Thread engagement can't be enough between these two.

These brass adapter fittings are not very deep. Only app 0,28 inches, and the cone at the bottom makes it even less.

Then the offered male fitting hasn't threads all the way to the tip.
See enclosed photos.
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Last edited by staleg; 01-31-2020 at 08:31 AM.
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Old 01-31-2020, 08:09 AM
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Another possible solution is to connect this to the brass fitting and use a standard 3AN hose from there.
But I guess this soultion need a support bracket where the short hard line connects to the flexible hose?
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Old 01-31-2020, 03:31 PM
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Quote:
Originally Posted by staleg View Post
Another possible solution is to connect this to the brass fitting and use a standard 3AN hose from there.
But I guess this soultion need a support bracket where the short hard line connects to the flexible hose?
Yeah, that will need a support or flex will cause it to break off.

As to post #11, comparing the steel adapter to the brass elbow....the adapter won't thread in using much more than 1/2 to 2/3 of those available threads...it won't use them all. You'd have to test fit a elbow to see if it is gong to screw in far enough to seal at the cone...or use a pair of calipers to measure the depth of the hole to the cone and compare that way.
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Old 01-31-2020, 04:31 PM
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these guys can custom make hoses with any fittings for around $30 bucks per hose... very friendly people.

Crown Performance: Stainless Steel Brake Lines - Braided Hoses for Cars, Trucks & SUV
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Old 01-31-2020, 09:03 PM
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Can you switch the bleeder and the fitting so it's not hitting the suspension?
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