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hi guys, im new here as I have just bought my 2013 cb1100 with the cast alloys. well I decided to powdercoat them, my go what an expensive lesson learned!! im now near the end both financially and in rebuilding the bike and putting the wheels on.
few questions, do I need to replace the bolts for caliper mount and the brake disc rotor bolts? some say yes others no.
many thanks in anticipation
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The Honda service manual says to replace them but most people don't.
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Only because you are asking-- I hate to be that guy but I would replace them.
The service manual says to replace them for a reason. Now, I know it can be argued that they are trying to fleece you for money, and in the circumstance of any other parts I would agree with that argument but this is a safety item. I just did this very same work and replaced every fastener, seal and bearing and I recommend that you do the same. You'll feel better about the end result and there will be little doubt that you'll have anything fail due to an over-stretched fastener or fatigue.
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It would be interesting to know exactly why the manual says to replace them. I imagine replacing the bolts would not be cost prohibitively expensive, particularly for a safety item. That said, I replaced my bar ends, and the manual said to replace the mounting screws. Since the bar end screws are not under a lot of torque, and consequently not subject to fatigue, the only reason I could think of to replace them was that new ones have a fresh thread locking patch on them from the factory. I did not replace the bar end screws because they were perfect, and simply used some blue thread locker. So, perhaps this is the same situation with the rotor bolts?
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(01-21-2018, 07:42 AM)2017EX_imp Wrote: It would be interesting to know exactly why the manual says to replace them. I imagine replacing the bolts would not be cost prohibitively expensive, particularly for a safety item. That said, I replaced my bar ends, and the manual said to replace the mounting screws. Since the bar end screws are not under a lot of torque, and consequently not subject to fatigue, the only reason I could think of to replace them was that new ones have a fresh thread locking patch on them from the factory. I did not replace the bar end screws because they were perfect, and simply used some blue thread locker. So, perhaps this is the same situation with the rotor bolts?
They are a single-use bolt which stretches a predetermined amount. Once used and removed, the bolt is considered unsuitable to put back in service.
I've replaced a bunch of these. I think I still have quite a few left over.
It'll cost about $20 to replace them, cheap insurance. Honda says to do it, I do it.
You COULD replace the bolt with a conventional, non-stretching type of the proper grade and size, but I figure Honda have a reason for using that particular bolt and when it comes to brakes, I don't like guessing.
Bar end weights, if they come loose, not likely to lead to a crash.
Brake calipers, probably.
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I learn something new every day! Thanks Ulvetanna!
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(01-21-2018, 07:52 AM)2017EX_imp Wrote: I learn something new every day! Thanks Ulvetanna!
I got into mine pretty deep when I had it. I still have that expensive little tool to keep the cam chain tight whilst doing the valve check. 90 bucks. And I still have a set of cush drive inserts I was going to install to clean up some driveline lash. Gave the owner's manual away with the bike sale, though.
If I get the EX or RS I speculate I'll need a new manual, anyway.
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thanks so much for all your replies, I think I will get the bolts replaced. would it be the same for the brake calliper mounting bolts?
also does anyone know the torque settings for the disc bolts front and rear?
many thanks this is helping me a lot!
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What was the nightmare with your powder coating ? company , cost or quality ?
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Beermonster. The service manual shows that the bolts are ALOC bolts. That means they come with a locking agent on the threads. You could add your own and reuse them. As far as I know they are not torque to yield bolts. On one site, they joke that ALOC means Add Locker or Crash
But buying new ones is not a bad thing.
Anyway the torque spec is:
Front Brake Caliper Mounting Bolts (4): 23 ft lbs
Rear Brake Caliper Bolt (1) : 16 ft lbs
