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Old 07-17-2017, 01:59 PM   #1
Kirkathon
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Default Can I block the rear brake lines?

I replaced the rear brake lines on my 2004 WRX with factory replacements, however the drivers side rear was mounted under the gas tank, so i bent the line to fit since i couldn't get under the gas tank to replace it properly.
Now there is too much pressure going to the drivers rear caliper and it wore my pad down prematurely.
Can i block both rear brake lines or would that cause damage to the transmission?
Since the fronts do most of the braking I wouldn't think it would be a big deal unless the 4 wheel drive system would be affected from all the wheels not braking at the same rate.
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Old 07-17-2017, 02:20 PM   #2
Preludicrous
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You could install a brake bias system and dial it all the way to F (front) or you could just fix your brakes properly. Guess which one is probly less expensive...
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Old 07-17-2017, 02:30 PM   #3
Charlie-III
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Pressure is pressure, you could have a 50' line and the pressure to that caliper would be the same.

You have another issue, find it and fix it.

Note, if what you said was true, each corner would wear out pads at different rates making it a nightmare to keep up with.
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Old 07-17-2017, 02:35 PM   #4
Phail
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...I don't know what else to say but NO!!! Do not even drive the car until you have all four brakes working properly. Do not endanger your life or the lives of others for a "cheap" fix. Install the brake line properly, and check to see if your brake calipers and/or slide pins are seized or take it to a shop.

Just no...
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Old 07-17-2017, 03:41 PM   #5
Loyale93
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Quote:
Originally Posted by Charlie-III View Post
Pressure is pressure, you could have a 50' line and the pressure to that caliper would be the same.

You have another issue, find it and fix it.

Note, if what you said was true, each corner would wear out pads at different rates making it a nightmare to keep up with.
This. Pressure is pressure. It's not the same as an exhaust system, where you have pressure and flow. Your brake system is a closed system. You press on the pedal and fluid goes towards the brake calipers. You release and it comes back.

If you have a longer line, it just means more fluid is in there. That's it.

You have another problem. Likely a slide pin that's seized or just crappy. Check that first.
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Old 07-17-2017, 04:19 PM   #6
lpxltt
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Is this really a question? You want to remove your ability to stop your car. One that, I assume, is driven on the street. With other drivers.

Fix the problem. If you can't fix it, pay someone to fix it for you, otherwise don't drive the car.
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Old 07-18-2017, 12:47 AM   #7
mitch808
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Factory bias is something like 70/30, give or take up to 5%. Many folks play with 2-10% of that bias in the way of different piston sizes, rotor sizes, pad compounds, or even as suggested a brake proportioning valve. Most included myself, enjoyed shifting bias rearward by way of the H6 upgrade out back. We did not want more front bias and front nose dive.

Taking it to 0%, would mean a happy rear end, that would spin out in just a spits worth of rain. As others mentioned, don't do this. Fix the problem. Properly.
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Old 07-18-2017, 03:06 AM   #8
subarumod
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Quote:
Originally Posted by lpxltt View Post
Is this really a question? You want to remove your ability to stop your car. One that, I assume, is driven on the street. With other drivers.

Fix the problem. If you can't fix it, pay someone to fix it for you, otherwise don't drive the car.
I wanted to make a thread a couple days back about whether Its possible to "Delete" your car tires. you know how its hott to Delete things off your vehicle... less weight, right?
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Old 07-18-2017, 10:11 AM   #9
lpxltt
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Originally Posted by subarumod View Post
I wanted to make a thread a couple days back about whether Its possible to "Delete" your car tires. you know how its hott to Delete things off your vehicle... less weight, right?
Well, I mean... they add studs to winter tires to increase grip. Studs are metal. Wheels are metal. Obviously it would just be more grip and the rubber companies are just trying to sell us on propaganda.
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Old 07-18-2017, 12:55 PM   #10
Kirkathon
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Quote:
Originally Posted by mitch808 View Post
Factory bias is something like 70/30, give or take up to 5%. Many folks play with 2-10% of that bias in the way of different piston sizes, rotor sizes, pad compounds, or even as suggested a brake proportioning valve. Most included myself, enjoyed shifting bias rearward by way of the H6 upgrade out back. We did not want more front bias and front nose dive.

Taking it to 0%, would mean a happy rear end, that would spin out in just a spits worth of rain. As others mentioned, don't do this. Fix the problem. Properly.
Fixing this properly would require more parts than the car is worth. The gas tank would have to be removed, and most likely replaced because it is rusted in place.
I don't know how to explain it other than one wheel's brake pads are worn out and the others are brand new. Will check the slide bolts this weekend.

When i step on the brakes, the first wheel to get pressure is my driver's side rear, and that cannot be right.

Last edited by Kirkathon; 07-18-2017 at 01:02 PM.
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