MrEviLDeD Posted January 21, 2017 Share Posted January 21, 2017 Hey everyone, me again I have a question about torque values. The FSM says that the water pump bolts should be torqued to 16 - 21 Nm, I have two torque wrenches one that does foot pounds, and one that inch pounds. Is it safe to assume that 18 Nm would be the inch pounds wrench? It is the only one that has such a low value however it seems like I am barely putting any force on those water pump bolts so wanted to be sure and make sure I do not need another or different torque wrench. Any insight on this would be awesome. Just want to make sure I am torquing them properly. Link to comment Share on other sites More sharing options...
Citron Posted January 21, 2017 Share Posted January 21, 2017 You can convert NM to ft-lbs with Google. Personally, I wouldn't worry about it. Generally, I only torque critical things, like head bolts, rockers, pinion nuts etc. Valve covers, oil pans, alternators, exhaust bolts, I just make tight while being mindful of the size of the bolt, what material it is threading in and the purpose of it. Link to comment Share on other sites More sharing options...
MrEviLDeD Posted January 21, 2017 Author Share Posted January 21, 2017 The torque spec for the water pump bolts is listed in the FSM as, 16 - 21 (1.6 - 2.1, 12 -15) The FSM states that the units are listed a N-m(kg-m, ft-lb) My problem is that I am not sure if the 12 - 15 ft-lb is inch-lb ? as my ft-lb wrench doesn't come close to that number, and my inch-lb does, but its in inch-lb not the same as ft-lb so I am confused and starting to think that I need another wrench that does very low ft-lb.. When it comes to the waterpump I would prefer to have it torqued properly as the material is aluminum and I would hate to ruin the threads over torquing the bolts. I will do the conversations here and see. Maybe my inch-lb wrench can get high enough to do those numbers.. I also notices that the wrenches both have N-m and the inch-lb wrench has a 18 N-m setting but it still feels like I am not putting any torque on the bolts... like it is just slightly more than finger tight.. Link to comment Share on other sites More sharing options...
MrEviLDeD Posted January 21, 2017 Author Share Posted January 21, 2017 (edited) Hah! Well done on the conversion suggestion.. It was all in my head. the lb-in would be 168 to the 18N-m and I have the correct tool and the bolts are torqued properly!! Thank you very much! Edited January 21, 2017 by MrEviLDeD Link to comment Share on other sites More sharing options...
Citron Posted January 21, 2017 Share Posted January 21, 2017 Cool. Yeah, 18nm isn't much more than finger tight. Often, all you need to do is compress a gasket or oring to keep something from leaking. People have the tendency to over torque things, and then deform the gasket or oring and the item leaks so they torque more. I am glad you got it going though. Link to comment Share on other sites More sharing options...
adamzan Posted January 21, 2017 Share Posted January 21, 2017 It is 15 ft-lbs. The waterpump is aluminum but there are no threads in it. The bolts go straight through into the cast iron block. Link to comment Share on other sites More sharing options...
SpecialWarr Posted January 31, 2017 Share Posted January 31, 2017 (edited) And for the mathematically proficient: 1 FT-lbs = 12 IN-lbs 1 FT-lbs = 1.35 N-m 1 N-m = 8.85 IN-lbs 10 IN-lbs = 1.13 N-m Edited January 31, 2017 by SpecialWarr 1 Link to comment Share on other sites More sharing options...
Citron Posted January 31, 2017 Share Posted January 31, 2017 1 N-m = 8.85 IN-lbs 10 IN-lbs = 1.13 N-m Are you sure on this bit? Looks contradictory. Link to comment Share on other sites More sharing options...
SpecialWarr Posted January 31, 2017 Share Posted January 31, 2017 Are you sure on this bit? Looks contradictory. Let's use it in an example! 1 N-m = 8.85 IN-lbs 10 IN-lbs = 1.13 N-m 16 Newton-meters is what in inch pounds? 16 x 8.85in-lbs = 141 in-lbs according to my torque wrench...math says 141.6 Working backwards from 140 inch-pounds? 140 inch-pounds x 0.113 Newton-meters = 15.82 Newton-Meters OR 142 inch-pounds x 0.112985 Newton- meters (for exactness) = 16.04 Newton- meters.... Which works out to slightly snugger than hand-choked-up-all-the-way-to-the-socket-with-three-fingers-pulling force! Or just hit the google! Link to comment Share on other sites More sharing options...
Citron Posted February 1, 2017 Share Posted February 1, 2017 Oh duh. For some reason I was thinking you were saying 1 N-m = 8.85 IN-lbs 10 IN-lbs = 1 N-m Hence my comment. Link to comment Share on other sites More sharing options...
SpecialWarr Posted February 2, 2017 Share Posted February 2, 2017 Hahah... I figured.. but I thought I would be an excellent use of my time at work to write an example!! 2 Link to comment Share on other sites More sharing options...
MrEviLDeD Posted February 4, 2017 Author Share Posted February 4, 2017 Thank you for the replies. I realized that the two torque wrenches seem to have good numbers are either end, so good low lb-in on the smaller, and good high 260 ft-lb on the larger. however in the middle (where the high of the low and the low of the high should overlap. there is about 25-30 ft-lb gap.. Can I dial my larger down lower than the marks and expect it to torque accordingly? I know the lock ring still locked in increments.. Pardon the silly question. Trying to avoid a third torque wrench to cover the gap between my other two of that makes sense. Link to comment Share on other sites More sharing options...
Citron Posted February 4, 2017 Share Posted February 4, 2017 I have always been told that you do not want to go past the range on a torque wrench. Link to comment Share on other sites More sharing options...
Slartibartfast Posted February 5, 2017 Share Posted February 5, 2017 I imagine the wrench is marked about as far as it's accurate, and it's probably less accurate at the far ends as it is. Unless you have something critical that needs a torque spec in between the ranges of your two wrenches, I wouldn't worry about picking up a third wrench unless you've got something in particular that needs to be torqued within that range. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now