S2000 Under The Hood S2000 Technical and Mechanical discussions.

Broken Banjo bolt

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Old Apr 1, 2014 | 07:24 AM
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Default Broken Banjo bolt

So decided to do steel braided line, yay.
Was screwing in the new banjo bolt into the caliper, using a torque wrench set to 25 ft lbs, and somehow it just snapped in half, really didnt feel tight at all yet.
Luckily I could back it out with my fingers easily so it wasn't stuck in there.
This was hardware that came with Racing Brake lines. Also what bugged me is that the bolts were SAE, they were 9/16th, WTF, why?
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Old Apr 1, 2014 | 08:22 AM
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I find that 25 ft lbs is a bit on the high side for many aftermarket banjo bolts, I tend to just snug them down by hand or lower the torque wrench setting to around 20 ft lbs as I don't trust them as much as oem bolts. The OEM Honda bolts seem to be better at that torque level, though it is still a bit high IMO. Good thing is that the bolt usually goes bad before the caliper threads so that is easier to replace, you should be able to use an oem bolt if you have one.
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Old Apr 1, 2014 | 08:28 AM
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I do have OEM, they are longer though. The head on the brake line is thinner than the OEM line so I was worried that OEM would be too deep. I may try it or just cut it down to match the RB bolts. I got 3 of the lines done last night, just have this one left and then bleeding.
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Old Apr 1, 2014 | 09:11 AM
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Not the first time... a friend of mine had the SOS brake lines, we tried to torque the provided bolt to OEM spec and it snapped just like yours did.
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Old Apr 1, 2014 | 09:47 AM
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Originally Posted by devildust
I do have OEM, they are longer though. The head on the brake line is thinner than the OEM line so I was worried that OEM would be too deep. I may try it or just cut it down to match the RB bolts. I got 3 of the lines done last night, just have this one left and then bleeding.
Okay , good luck, yeah I am not sure if the added length will be an issue, hopefully not. I've always said one of the worst feelings in the world is that of a stripped bolt, I just hate when it never tightens up and just spins or snaps Good luck
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Old Apr 1, 2014 | 11:15 AM
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Is there any good guide for installing ss lines? What hardware to go with ? I have Russell lines. Would like to use good hardware, and oem washers I guess?
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Old Apr 1, 2014 | 11:18 AM
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Exactly the reason I run OEM lines.
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Old Apr 1, 2014 | 11:24 AM
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Originally Posted by starchland
Is there any good guide for installing ss lines? What hardware to go with ? I have Russell lines. Would like to use good hardware, and oem washers I guess?
There is a good DIY on here, just search.

Its not a hard process. Messy though lol.

I might just run oem banjo bolts.
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Old Apr 1, 2014 | 12:10 PM
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using an improperly sized torque wrench can also distort the actual strength in which that bolt is being torqued down. IDK if that's what you did, but it's good to keep that in mind in case you didn't know.
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Old Apr 1, 2014 | 12:19 PM
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Originally Posted by jimboslice
using an improperly sized torque wrench can also distort the actual strength in which that bolt is being torqued down. IDK if that's what you did, but it's good to keep that in mind in case you didn't know.
Could you elaborate on improperly sized torque wrench?
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