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Old Mar 29, 2024 | 08:19 PM
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I just purchased an 04 manual 6 speed=with only 13,000 miles. Is it advantageous to replace the individual brake lines? After all they are 20 years old.
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Old Mar 29, 2024 | 08:27 PM
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You could replace the brake lines at the calipers for stainless steel, that is a popular "mod".
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Old Mar 30, 2024 | 03:03 AM
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Originally Posted by BobCasteel
I just purchased an 04 manual 6 speed=with only 13,000 miles. Is it advantageous to replace the individual brake lines? After all they are 20 years old.
Theres no advantage to SS brake hoses on a street car.

There’s a bunch of 20 year old brake lines driving around. That said perhaps take it to your local brake guy and have them inspected. It’s a good idea to have your brake fluid flushed if it’s discolored or original. Flush means the guys run a quart or so through the lines to remove ALL the old fluid. Good luck.
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Old Mar 30, 2024 | 07:29 AM
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I would at least have the lines inspected for signs of wear/deterioration. I would also change the brake fluid.

Congrats on your C5 purchase.
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Old Mar 30, 2024 | 08:09 AM
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I have a 2002 with 12,000 miles on it that I have owned for several years. If like most of the ultra low milage cars you see, they have been kept inside and driven on sunny days. My experience with several of them that they tend to have few problems caused by erosion or aging if they have been driven occasionally.

Over the years I have changed a long list of parts and fluids. Truthfully, I think most of the money spent was wasted but it is a hobby! I have suffered almost no unexpected failures and you will be surprised how strong these cars really are. I have had a large number of the C5's and they have been the least problematic of the other models I have owned.

Good luck with the new toy!
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Old Mar 30, 2024 | 08:22 AM
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Originally Posted by Vader_C5
You could replace the brake lines at the calipers for stainless steel, that is a popular "mod".
I did that last year, and did experience what I felt to be, a firmer brake pedal. HOWEVER, I went with the Russel brand of hoses, and found that you really need to tighten the hoses with considerable torque, at the end of the hoses, where they meet up with the hard lines. I had some trouble getting them tight enough so that they wouldn't "seep" when the pedal was firmly pressed.

I also found that a GOOD set of flare nut wrenches are essential for the job. I started out using an inexpensive set of Craftsman wrenches, from Lowes, and I just couldn't get them to seal. While I was struggling with this, a friend and his son stopped in to say, "Hi", and offered to help. Chris, the son, is an auto tech by trade, and just happened to have some of his tools with him, as he had been working on a job at home. He whipped out his Snap On line wrench, and really leaned on it, and the lines sealed up nicely. Possibly, under pressure, the Craftsman wrenches were flexing, if that's possible....
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Old Mar 30, 2024 | 08:25 AM
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Brake hoses and fluid? Sure.
If the hard lines are not rusted I wouldn't touch them.
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Old Mar 30, 2024 | 08:55 AM
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Brake fluid should be flushed every few years, but most folks never do it, especially on daily drivers. It's easy and cheap to do and will help keep your brakes working their best. If the fluid is dark, it's definitely time. Brake fluid absorbs moisture over time, becoming darker, and making it less effective
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Old Mar 30, 2024 | 10:46 AM
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Originally Posted by leadfoot4
I did that last year, and did experience what I felt to be, a firmer brake pedal. HOWEVER, I went with the Russel brand of hoses, and found that you really need to tighten the hoses with considerable torque, at the end of the hoses, where they meet up with the hard lines. I had some trouble getting them tight enough so that they wouldn't "seep" when the pedal was firmly pressed.
I put spiegler lines on. Unscrew the old ones and screw in the new ones, easy peasy. However, make 0 difference whatsoever on pedal feel at least with spongy street pads. I used the cheap wrench from autozone.

I heard the same complaint on goodridge lines. The hose is fine but the fitting is hot garbage to get connected without leaks.

Don't forget: caliper seals and boots, pad hardware, and master cylinder

Last edited by Elektro; Mar 30, 2024 at 10:51 AM.
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Old Mar 30, 2024 | 11:10 AM
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If you guys are having sealing problems with anything other than stainless steel hard line, make sure the flares are correct. Lean the difference between double inverted flare and bubble flare.
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Old Mar 30, 2024 | 11:18 AM
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Originally Posted by ThomasR
If you guys are having sealing problems with anything other than stainless steel hard line, make sure the flares are correct. Lean the difference between double inverted flare and bubble flare.
Here's a guide -

https://blog.1aauto.com/how-to-bubbl...%20bend%20over.
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Old Mar 30, 2024 | 11:28 AM
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Originally Posted by ThomasR
If you guys are having sealing problems with anything other than stainless steel hard line, make sure the flares are correct. Lean the difference between double inverted flare and bubble flare.
That's good info, but if it's a C5 direct-replacement hose, you should be able to bolt it up to the caliper and hard line just per the instructions in the service manual.
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Old Mar 30, 2024 | 12:06 PM
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Originally Posted by Elektro
That's good info, but if it's a C5 direct-replacement hose, you should be able to bolt it up to the caliper and hard line just per the instructions in the service manual.
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