brake line fittings (2013)
- Thread starter nortncom
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I am wanting to keep the rigid pipe that goes to the caliper. just need to find a fitting that is compatible with the factory hard line. I'm assuming I am going to need a convex fitting being that's what the factory one is. I'm just confused on the flare sizes (inverted, bubble, jic). Have no idea.
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nortncom said:
This is the type of fitting you need.
3/8 JIC/UNF Male, Bulkhead, Straight, Convex (+ thin nut & washer).
http://www.merlinmotorsport.co.uk/p2897 ... _info.html
Nater_Potater
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I went through this mess about two weeks ago, and just now discovered where I went wrong; AN fittings are compatible with JIC fittings, which are much easier to buy what you need vs. AN fittings. Granted, the AN fittings have to conform to tighter tolerances (specifically, the threads), but it's more of a concern in high-vibration areas such as aircraft engines. The front fork doesn't qualify for that, and I regularly use JIC fittings on high-pressure (2000 psi) systems without concern. Try http://www.google.com/aclk?sa=l&ai=...com/ProductDetails.asp?ProductCode=2700-03-03 which will allow you to connect your AN -3 line directly to the flare on the upper end of your original steel line coming up from the caliper. FYI, all of the fittings on these lines are 3/8-24 (UNF), whether they're JIC, AN, or bubble-end, such as what goes into the caliper. Why N-V mixed and matched fitting styles, I don't know. If it doesn't come with one, be sure to get a thin nut to hold the bulkhead fitting to your stock fender bracket, or re-use the one off your old rubber hose.
With what I just learned, I think I'll get one of these myself, as I had to build my own line and run it through a flare union, then adapt to the AN line. It's kinda ugly...
With what I just learned, I think I'll get one of these myself, as I had to build my own line and run it through a flare union, then adapt to the AN line. It's kinda ugly...
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The Merlin Motorsport link and picture that L.A.B. posted claims to be a 37 degree JIC fitting. However last picture L.A.B. submitted with the 90 degree angle clearly shows it is not a JIC, but instead an S.A.E. 45 degree fitting. I have included a picture of an AN (Army Navy) fitting which is machined at 37 degrees. You can see it does not fit in a 90 degree angle at all.
Mr. Rick
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This exact issue just came up for me.
Is it acceptable and safe to use an AN 37 male (bulkhead fitting) cinched up to a 45 degree double flare? Doesn't seem like a great idea.
Could maybe be mashed together by exceeding std torque and not leak, but...
I looked all over for the answer, no dice. Whadda y'all say?
Is it acceptable and safe to use an AN 37 male (bulkhead fitting) cinched up to a 45 degree double flare? Doesn't seem like a great idea.
Could maybe be mashed together by exceeding std torque and not leak, but...
I looked all over for the answer, no dice. Whadda y'all say?
Deets55
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I do not believe you use double flares with Norton brake lines. I am pretty sure you use bubble flares. Look at the picture “3/8” Fuel/hydraulic British Nuts and Fittings”
Also take a look at this pdf. http://www.fedhillusa.com/webnuts/common flares6.pdf
That 37 degrees is critical with machined fittings, I think the soft bubble on the brake line will conform to the proper shape. I have made up a couple of brake lines with the bubble flare and have not had any leaks.
Pete
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Yes, for 'male' (nut) rigid pipe fittings.
For instance, the pipe to caliper fitting as the caliper seat is concave.
But not 'female' pipe fittings as the flexible hose fittings are convex.
http://www.austinhealeywood.com/brakelines.html
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I don't think so, and 'bubble' doesn't seem to be the only option for 'British' lines.
http://www.austinhealeywood.com/brakelines.html
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Following the British-Girling, British nuts and fittings links on that fedhill site you posted:
http://store.fedhillusa.com/p43.aspx
P4-3 - 3/8" x 24 unf female nut - SAE flare
Description:
3/8" x 24 unf female, .687” long overall
SAE flare (45 degree inverted/double)
Use with 3/16"/4.75mm tubing
http://store.fedhillusa.com/p43.aspx
P4-3 - 3/8" x 24 unf female nut - SAE flare
Description:
3/8" x 24 unf female, .687” long overall
SAE flare (45 degree inverted/double)
Use with 3/16"/4.75mm tubing
Deets55
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Les,
Confusing as heck. Looking at the pdf. I guess there are a couple of variations on this. If I’m reading this right 37 degrees is a single flare similar to a AN fitting and 45 degrees would use a standard double flare. The female nuts on the Fedhill site would use the 45 double flare.
Does that mean since Norton is using 37 degree bulkheads that a single flare is the correct choice?
Pete
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