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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > 3 days soaking in PB blaster, I am about to give up.



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      05-17-2018, 09:26 AM   #23
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Well after 3 hours of torching, oil, and cutting my hands the nuts broke free......BUT for the life of me I am unable to spin those bolts more than one maybe two rotations a 1/10 of a turn at a time. I have given up and retightened the existing lines back down. I thank everyone who explained the tricks of rusted brake lines and commend anyone who has actually replaced those two lines. Yes, I also bought the pivoting line wrenches just for this job as others suggested - but with my big hands and the tight space it just is not happening. If anyone lives in northern NJ who had success in swapping them out, I would gladly pay you to finish these final two.
I have done many during F30 brakes upgrades (my thread was deleted by mods) Only skipped doing it on 2 vehicles because is difficult to explain most people why there is extra charge involved when using torche or when you need to replace the line. Vehicles are from IL, IN, and Wisc so similar to NJ climate that causes rust. I'm not sure what bolts you are talking about. My hand aren't big and I use stubby flare wrenches for this. Anyhow, they don't do much and is highly unlikely that you would feel any difference from the replacing them.
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      05-17-2018, 11:10 AM   #24
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I have done many during F30 brakes upgrades (my thread was deleted by mods) .
Why was it deleted?
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      05-17-2018, 11:28 AM   #25
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Quote:
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Originally Posted by dustinsterk View Post
Well after 3 hours of torching, oil, and cutting my hands the nuts broke free......BUT for the life of me I am unable to spin those bolts more than one maybe two rotations a 1/10 of a turn at a time. I have given up and retightened the existing lines back down. I thank everyone who explained the tricks of rusted brake lines and commend anyone who has actually replaced those two lines. Yes, I also bought the pivoting line wrenches just for this job as others suggested - but with my big hands and the tight space it just is not happening. If anyone lives in northern NJ who had success in swapping them out, I would gladly pay you to finish these final two.
I have done many during F30 brakes upgrades (my thread was deleted by mods) Only skipped doing it on 2 vehicles because is difficult to explain most people why there is extra charge involved when using torche or when you need to replace the line. Vehicles are from IL, IN, and Wisc so similar to NJ climate that causes rust. I'm not sure what bolts you are talking about. My hand aren't big and I use stubby flare wrenches for this. Anyhow, they don't do much and is highly unlikely that you would feel any difference from the replacing them.
I think a stubby flare is the key. That is the challenge I was having with the wrench hitting the suspension and tight space of those tops bolts. Maybe I will buy one and try it again when my blood pressure calms. Haha. Thanks again. Why were your threads removed?
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      05-17-2018, 12:01 PM   #26
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Why was it deleted?
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Originally Posted by dustinsterk View Post
I think a stubby flare is the key. That is the challenge I was having with the wrench hitting the suspension and tight space of those tops bolts. Maybe I will buy one and try it again when my blood pressure calms. Haha. Thanks again. Why were your threads removed?
Forum moderators took it as advertisement. Thread was very informative on brakes, brake upgrades in particular.
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      05-24-2018, 05:43 PM   #27
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I think I may have found a solution to the tight spot of the two hose connection points. Has anyone used these before?:
https://www.amazon.com/Sunex-9710M-8.../dp/B0002SRJF4

I am thinking this may work perfect to attach an extension and actually be able to turn the line nuts from the underside of the car.
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      05-26-2018, 12:16 AM   #28
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      05-26-2018, 03:33 AM   #29
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Yeah thats great if you have $500 for a tool that does the same thing as a $20 propane torch.....
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      05-26-2018, 08:52 AM   #30
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Quote:
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Also don't get the cheap torch. Opt for the benzomatic 4000 or 8000 one. Works great for those hard to get out things.
Thanks all, liquid arrives tomorrow. How long do I need to heat these bad boys up with the torch?
8-10 sec. then try & turn. If not repeat cycle until the nut turns.
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