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Author Topic: Torque settings  (Read 222 times)

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Offline topgun

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Torque settings
« on: October 07, 2018, 12:15:53 pm »
Hi Guys, I am chasing the Torque settings for Mtc conrods for my cb 750 I have e-mailed Mtc but no reply yet I was hoping one of you guys could help me out Cheers

Online Bill/BentON Racing

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Re: Torque settings
« Reply #1 on: October 08, 2018, 04:07:58 am »
Don't have specs,  but good bolts should be @ 30 lbs I'd think.
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Offline MRieck

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Re: Torque settings
« Reply #2 on: October 08, 2018, 06:20:06 am »
If you have a stretch gauge I'd say .005"
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Offline topgun

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Re: Torque settings
« Reply #3 on: October 08, 2018, 11:56:56 am »
Thanks for your input guys I went up to 20lbs and the plastigauge looked good  but will check it with 30 Mtc did not have any info available Cheers Tony

Offline NitroHunter

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Re: Torque settings
« Reply #4 on: October 08, 2018, 06:30:21 pm »
If you have a stretch gauge I'd say .005"
Agreed. Bolt stretch is easy to check, and isn't a friction dependent measurement. The bolt's stretch provides the clamping force. Different thread / underhead lubricants can produce wildly varying bolt stretch at the same torque setting. In many applications an appropriate length micrometer can suffice.
Here is a sample I have of AJPE aluminum rod installation instructions, it give the manufacturers recommended assembly lube, torque, and bolt stretch. In this case, bench testing shows 95 ft/lbs on my torque wrench produces the desired stretch when lubed with 70wt Redline oil.
FYI: In the case of modern Top Fuel rods, even if you grossly over torqued them to like 200+ ft/lbs, you will break the bolt before you strip out the threads. Not something I'd try with my Golden Rods.  ::)
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« Last Edit: October 08, 2018, 07:03:54 pm by NitroHunter »
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Offline PeWe

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Re: Torque settings
« Reply #5 on: October 09, 2018, 03:13:42 am »
Hopefully changed orientation
« Last Edit: October 09, 2018, 03:35:54 am by PeWe »
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Offline topgun

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Re: Torque settings
« Reply #6 on: October 10, 2018, 11:54:14 am »
Thank you Nitro Hunter for the info  Cheers Tony     ps and you too PeWe

 

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