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Old 03-01-2011, 08:44 AM   #1
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Measuring Brake Line length

My front brake lines are at the limit at full flex - actually pulled them twice.

I bought the 3.5" RE lift used and the lines are braided SS so they "may" be the RE 20"(?) that came with the lift new - I just dont recall as this was several years ago.

My question in looking to get a slightly longer line, how is length measured? Is it end to end or just the braided portion

The braided portion of mine is ~18".

I would think the YJ lines would work but not sure. Just need a couple of inches so dont want one too long

Thanks

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Old 03-01-2011, 08:51 AM   #2
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The braid isn't needed, it's just a cosmetic thing. All you need are a set of OE brake lines for the '91 to '95 YJ Wrangler that are longer than the TJ's. They are a direct replacement and give the extra length needed.

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Old 03-01-2011, 09:22 AM   #3
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The braid isn't needed, it's just a cosmetic thing.
No its not Braided lines don't bulge at all. You will have a more responsive pedal and better braking. I thought they were BS until I put them on my mustang with no other changes and they made a noticeable difference. When I upgrade my jeeps lines they will be braided for sure.
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Old 03-01-2011, 09:29 AM   #4
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Ok, whatever you want to believe is fine with me. But if you think the OE brake lines are like balloons and expand when you step on the brakes, you are wrong. Only if they are defective could that happen. And if you noticed an improvement in braking after installing braided brake lines, that was because your old brake lines were defective and in need of replacement. You would have seen the same improvment in braking had you replaced them with a new set of OE brake lines.

Here's a good thread on braided brake lines, check it out. http://www.jeepforum.com/forum/f9/br...ht-tj-1141665/
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Old 03-01-2011, 09:43 AM   #5
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I'm not too concerned re: braided versus hose as I never felt any improvement from going from OEM rubber to aftermarket braided. Of course some argue that rubber is better since it stretches.

Jerry: from your comments here and elsewhere and from Stu Olson's site, it does appear that the YJ lines would work but my only concern is whether they are longer than whatever I have now that. Hence the length question...

Tnx
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Old 03-01-2011, 09:48 AM   #6
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That I can't say Twichers, I have never personally had an axle that drooped enough so YJ brake lines weren't long enough.
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Old 03-01-2011, 10:33 AM   #7
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Here's a good thread on braided brake lines, check it out. Braided stainless brake lines for stock height TJ? - JeepForum.com
That thread is just you and blaine bickering with someone who had the same experience that I did. LOL at blaine using his "super accurate veneer calipers" to measure the bulge. He should have measured the volume and pressure peaks at each end of the tube on transient spikes. Here is some real tech for you.
StopTech : Balanced Brake Upgrades
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Old 03-01-2011, 10:40 AM   #8
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Like I said, whatever you want to believe. You tend to buy into things like that so it doesn't surprise me that you think they are a good thing.

If, however, braided brake lines helped improve braking, the high-end sports cars would all be running them since they are all about acceleration and braking. Nope, they too use rubber brake lines. Even Porsche. Don't confuse rubber brake line hoses that are extensively reinforced underneath the top layer of rubber to withstand pressures like up to 2000 psi with simple rubber hoses like are used for things like the windshield washer.
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Old 03-01-2011, 11:23 AM   #9
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If, however, braided brake lines helped improve braking, the high-end sports cars would all be running them since they are all about acceleration and braking. Nope, they too use rubber brake lines.
That is because there are 2 old BS DOT requirements that many SS braided lines don't meet.
Quote:
1. The manner in which the fittings must be attached to the hose.FMVSS 106 specifies that "Each hydraulic brake hose assembly shall have PERMANENTLY ATTACHED brake hose end fittings which are attached by deformation of the fitting about the hose BY CRIMPING OR SWAGING." [Emphasis added]

The idea is that, since crimped-on fittings can't be loosened, a stupid end-user won't be able to screw with and weaken them.

This is a good thing from a product-liability point of view, I guess... But it means that any hose assembly which uses the very best fittings available -like the nipple-and-cutter Aeroquip Super Gem or Earl's Speed Seal- is non-conforming and CAN'T be DOT-approved.

2. The "whip-resistance" test. This test involves mounting the hose on a flexing machine, pressurizing it to 235 psi, then running it at 800 RPM for 35 hours.
Why does EVERY big brake kit for any race car come with stainless steel lines if they don't matter?
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Old 03-01-2011, 11:24 AM   #10
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That is because there are 2 old BS DOT requirements that many SS braided lines don't meet.


Why does EVERY big brake kit for any race car come with stainless steel lines if they don't matter?
Bling. Every kid expects and wants it for the price they pay for those kits, and some people just naturally think braided brake lines have to be better because they cost more. And not "EVERY" big brake kit contains braided brake lines. Vanco's highly regarded Big Brake kit doesn't come with braided brake lines.
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Old 03-01-2011, 11:35 AM   #11
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And not "EVERY" big brake kit contains braided brake lines. Vanco's highly regarded Big Brake kit doesn't come with braided brake lines.
Bhahahah, you think you buddies garage modified explorer kit is a high end big brake kit? Lets grind down the calipers so they fit! Seems like a totally safe thing to do!
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Old 03-01-2011, 11:39 AM   #12
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You are clueless on such things, Vanco's dual-piston Big Brake kit is well proven and accepted as an outstanding brake kit for the TJ. You are the ONLY person who would say that simply because you personally hate the people who developed it because they know WTF they are doing and would never agree with you on your rants.
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Old 03-01-2011, 11:44 AM   #13
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I snapped a front axle in my 79 f250(mudbog) and it knocked the lower ball joint out and the wheel came off and the only thing that helped keep the whole wheel assembly with the truck when it was lifted out of 3 feet of mud(backhoe) was the steering and the braided break line that was stretch over 4 foot when I changed it .that's the only time I liked them cause I still had breaks. I hate them on my jeep cause they are too long and rub the shock.
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Old 03-01-2011, 11:50 AM   #14
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Old 03-01-2011, 11:56 AM   #15
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Originally Posted by twichers View Post
My front brake lines are at the limit at full flex - actually pulled them twice.

I bought the 3.5" RE lift used and the lines are braided SS so they "may" be the RE 20"(?) that came with the lift new - I just dont recall as this was several years ago.

My question in looking to get a slightly longer line, how is length measured? Is it end to end or just the braided portion

The braided portion of mine is ~18".

I would think the YJ lines would work but not sure. Just need a couple of inches so dont want one too long

Thanks
Lift up the Jeep, support the frame, drop the axle to full droop. Remove one wheel, turn the steering wheel to full lock in one direction. Take a piece of clothesline or string, pull it from the hardline to the brake caliper, leaving a bit of slack. Cut the string & measure length of said string. Thats the brake line length you need.

I've got Crown stainless lines. The outer layer is wearing off, but thats just the colored sleeve. The stainless part is of course fine. They're too long for what I need, but they work just fine and don't get caught in anything.
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Old 03-01-2011, 12:00 PM   #16
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You are clueless on such things, Vanco's dual-piston Big Brake kit is well proven and accepted as an outstanding brake kit for the TJ. You are the ONLY person who would say that simply because you personally hate the people who developed it because they know WTF they are doing and would never agree with you on your rants.
hahaha Keep regurgitating other peoples ideas all over the internet while you try and sell your friends products (savvy, currie, vanco, besttop, etc). I don't hate people that develop good products. I respect them. I hate when companies "garage mod" stuff and then get you to spread it all over then internet a their salesman. How many vendors have you in their pocket now? Take a look at the AEV big brake kit. That is done properly with a new cast knuckle, not one ground down in some guys garage.
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Old 03-01-2011, 12:02 PM   #17
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Take a look at the AEV big brake kit. That is done properly with a new cast knuckle, not one ground down in some guys garage.
I really like my Vanco brakes

Got em on craigslist for cheap
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Old 03-01-2011, 12:35 PM   #18
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hahaha Keep regurgitating other peoples ideas all over the internet while you try and sell your friends products (savvy, currie, vanco, besttop, etc). I don't hate people that develop good products. I respect them. I hate when companies "garage mod" stuff and then get you to spread it all over then internet a their salesman. How many vendors have you in their pocket now? Take a look at the AEV big brake kit. That is done properly with a new cast knuckle, not one ground down in some guys garage.
You are so petty about such things (because you personally hate the Big Brake kit's developer) that it's not even funny. No one grinds anything down or manufactures Vanco's kits in their garage, that was only done on the prototype during the development stage. It's a commercially manufactured kit that works well for those who actually have one installed. You don't and have no personal experience with it.
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Old 03-01-2011, 12:35 PM   #19
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UnlimitedLJ04 - thanks for the answer... a more direct way of answering my question.

I used a string to see how long my current lines are while still attached...

I'll post up my results for reference...

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