1100 torque spec`s question


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goldminerusa
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1100 torque spec`s question

Postby goldminerusa » Wed Jul 18, 2012 10:56 am



Yesterday after replacing the valve springs on the #3 intake,(broken outer), when i started to torque the rocker assy bolts to the honda srvc manual (my version) spec of 10lbs, i found the top 3 to be turning far too easily. Thinking this odd i checked the bottom 3 and found them all set to 40lbs. returning to the top 3, i checked the setting. the manual has only one spec for all six. My question is, is the lack of felt resistence while torquing an indication of stripped threads in the bore? The bolts have no damage. The bolts all "cracked" when i removed them. Haven`t started the engine yet and don`t want to till i`ve assured myself that this won`t become a larger problem. The bike is an `82 1100 w/62k mi, and i`m reasonaly certain it`s never been apart. Maybe i should say, i did this with the cyl. head on and removed the rocker shaft and rocker only. Thanks



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Re: 1100 torque spec`s question

Postby WingAdmin » Wed Jul 18, 2012 11:15 am

It could be an indication of stripped threads - but the fact that they "cracked" free when you undid them may point elsewhere - unless someone previously stripped them, left them torqued improperly and either loctited them, or just left them and heat cycles had bound them up in there.

It also could be oil on the threads, which will lubricate them and cause them to feel quite loose when a given amount of torque is applied, compared to non-lubricated bolts.

goldminerusa
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Re: 1100 torque spec`s question

Postby goldminerusa » Wed Jul 18, 2012 3:46 pm

Reading your reply got me thinking i`m going to find and buy a `bottoming tap` and see if or what comes out of the whole. I`ve used loctite in the past, do you or anybody else think this would be acceptable for a repair or just a cheap way out? Thanks for your help.

bustedwing
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Re: 1100 torque spec`s question

Postby bustedwing » Thu Jul 19, 2012 5:30 pm

That rather depends on how bad the hole is stripped out. If there is enough metal to use a bottoming tap and cleanup the threads so you can get a good torque on the bolts then ok. But the shavings have to come out not go in.If the hole is too stripped for just a bottoming tap, you may end up pulling the head off to have it repaired.
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goldminerusa
Posts: 245
Joined: Wed Mar 07, 2012 8:20 am
Location: Southern NH, home again!
Motorcycle: 1982 gl 1100standard, 1983 1000c

Re: 1100 torque spec`s question-revisited

Postby goldminerusa » Thu Jul 19, 2012 9:29 pm

Went out this afternoon, pulled the valve cover, and checked the upper bolts again for torque reading, right where i left them, 25lbs. Removed the bolts and with a right-angle pick found the threads and followed them to the bottom and then reversed the procedure, nothing came out and i felt the thread in and out. Ditto the other holes. A recent post i read here about lubricated threads turn farther(antiseize compound) and change torque readings was on my mind all along. Checked the bolts, they were a little wet, cleaned and dried them off, put them back in and torqued down to 25lbs. Started and ran the motor to operating temp. (straight up on my gauge), shut it off. Went back an hour or so later, rechecked the tension, right at 25lbs. To my mind, the wet threads were the, turning to far problem, as in the post. Result of changing a broken outer intake spring; engine runs noticeably quieter and much smoother. Thanks for the input from members.

bustedwing
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Re: 1100 torque spec`s question

Postby bustedwing » Fri Jul 20, 2012 11:57 am

Sounds like you lucked out, it could have turned out worse. I would run it a few weeks and re-check and if alls well then you should be good. The only thing I am concerned about is the heat-cooling cycle whether that might weaken that bolt hole . So after several cycles if it is ok then you are golden.
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goldminerusa
Posts: 245
Joined: Wed Mar 07, 2012 8:20 am
Location: Southern NH, home again!
Motorcycle: 1982 gl 1100standard, 1983 1000c

Re: 1100 torque spec`s question

Postby goldminerusa » Fri Jul 20, 2012 7:20 pm

Good point bustedwing, i`ll try your suggestion before going for a ride. Thanks




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