conversion question

SCcivicSI · 01-23-2008, 03:19 PM

ok guys im a complete retard when trying to figure this out. im lowering my car and putting on the spc camber kit, i am using an air compressor that reads in psi of course and i want to use it to torque the bolts which go to 43 lbf ft, ok so can some conversion guru gimme a way to do this

***Sirbelch*** · 01-23-2008, 03:24 PM

a torque wrench.

SCcivicSI · 01-23-2008, 03:24 PM

oh blah i didnt want to resort to that

nelsonr31 · 01-23-2008, 03:25 PM

Aren't you suppose to use a torque wrench to torque bolts? I never seen a torque wrench that you can use with a compressor.

SCcivicSI · 01-23-2008, 03:32 PM

if you set the working pressure of the tank to a pressure corresponding to a certain torque i dont see why it cant be used to torque the bolts

***Sirbelch*** · 01-23-2008, 03:34 PM

Quote:

Originally Posted by SCcivicSI

oh blah i didnt want to resort to that

Well, (not a physics major but here goes) you need to know things like torque capacity of the gun/wrench. CFM of the compresser at a given PSI. Diameter and length of the hose. I think thats it. But even if you can calculate the torque of the gun/wrench, how are you going to control it. How do you know when to stop?

Buy an effing torque wrench.

CanyonDriver · 01-23-2008, 05:53 PM

Ya torque wrench is the only logical way to tighten a bolt to the proper torque setting. Very delicate tool though. if you use it frequently it should be re-calibrated monthly.

bluesunit · 01-23-2008, 06:16 PM

Also, as you torque the camber bolts, the bolts will move. So you'll have to be keeping on end perfectly still.

I use a box end wrench on one side and a torque wrench on the other.

Solo2EG · 01-23-2008, 07:13 PM

Quote:

Originally Posted by bluesunit

Also, as you torque the camber bolts, the bolts will move. So you'll have to be keeping on end perfectly still.

I use a box end wrench on one side and a torque wrench on the other.

Yup, the only way you can do it properly... air guns are for taking stuff off, not putting it back on! (yes, including your rims!)

***mbringle*** · 01-23-2008, 08:22 PM

I am a physics major :) and torquing a bolt is so complicated. Is the torque spec wet or dry? But not getting picky when you torque do the following.

1) Always use a torque wrench.
2) Never use an air tool to put bolts on.
3) When applying the final torque make sure the wrench is moving as you hit the value. Static torque will be greater than dynamic torque. So if it needs 70 ft/lb and you tighten it to 65 first, probably won't move when you try to go to 70.

Which reminds me I need to get my torque wrench recalibrated before I put my new suspension in.

01-23-2008, 03:19 PM	#1 (permalink)
SCcivicSI Member Member Join Date: Jan 2008 Posts: 46 iTrader: 1 / 100%	conversion question ok guys im a complete retard when trying to figure this out. im lowering my car and putting on the spc camber kit, i am using an air compressor that reads in psi of course and i want to use it to torque the bolts which go to 43 lbf ft, ok so can some conversion guru gimme a way to do this

01-23-2008, 03:24 PM	#2 (permalink)
*Sirbelch* Louder than 4 F404-GE-400 Join Date: Jan 2007 Location: Vacaville CA Age: 27 Posts: 5,636 Paul iTrader: 1 / 100%	a torque wrench. __________________ You know what the sun's all about when the light go out.

01-23-2008, 08:22 PM	#10 (permalink)
*mbringle* VIP Member Join Date: Jun 2007 Location: Irvine, CA Posts: 93 Michael Bringle iTrader: 0 / 0%	I am a physics major :) and torquing a bolt is so complicated. Is the torque spec wet or dry? But not getting picky when you torque do the following. 1) Always use a torque wrench. 2) Never use an air tool to put bolts on. 3) When applying the final torque make sure the wrench is moving as you hit the value. Static torque will be greater than dynamic torque. So if it needs 70 ft/lb and you tighten it to 65 first, probably won't move when you try to go to 70. Which reminds me I need to get my torque wrench recalibrated before I put my new suspension in. __________________ -Mike 07 SSIP http://www.CygnusX1.net/Civic

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01-23-2008, 03:24 PM	#3 (permalink)
SCcivicSI Member Member Join Date: Jan 2008 Posts: 46 iTrader: 1 / 100%	oh blah i didnt want to resort to that

01-23-2008, 03:25 PM	#4 (permalink)
nelsonr31 Senior Member Join Date: Sep 2007 Posts: 1,959 iTrader: 26 / 100%	Aren't you suppose to use a torque wrench to torque bolts? I never seen a torque wrench that you can use with a compressor.

01-23-2008, 03:32 PM	#5 (permalink)
SCcivicSI Member Member Join Date: Jan 2008 Posts: 46 iTrader: 1 / 100%	if you set the working pressure of the tank to a pressure corresponding to a certain torque i dont see why it cant be used to torque the bolts

01-23-2008, 05:53 PM	#7 (permalink)
CanyonDriver Senior Member Join Date: Nov 2007 Location: West LA Age: 20 Posts: 2,035 iTrader: 0 / 0%	Ya torque wrench is the only logical way to tighten a bolt to the proper torque setting. Very delicate tool though. if you use it frequently it should be re-calibrated monthly.

01-23-2008, 06:16 PM	#8 (permalink)
bluesunit Senior Member Join Date: Dec 2005 Location: New Orleans, LA Age: 28 Posts: 297 iTrader: 0 / 0%	Also, as you torque the camber bolts, the bolts will move. So you'll have to be keeping on end perfectly still. I use a box end wrench on one side and a torque wrench on the other.