David Jenkins
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| posted on 16/4/08 at 12:13 PM |
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Setting torque without sockets?
Just wondering - if you have something like a lambda sensor that is supposed to be screwed in to 50Nm - 60Nm, how are you supposed to measure the
fixing torque?
You can't put a normal socket on it because of the cable that comes out of the top.
Is it just a case of doing it up F.T. with an ordinary spanner? Or is there some clever gizmo that does the job?
I could put a spring balance on a ring spanner and work out how hard I'd have to pull it but, frankly, life's too short!
David
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dan__wright
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| posted on 16/4/08 at 12:16 PM |
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you can get lambda sensor sockets that have a cutout for the cable so you can get them on.
FREE THE ROADSTER ONE…!!
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mookaloid
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| posted on 16/4/08 at 12:19 PM |
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I would have said reasonably tight not FT for one of those - of course that's only an estimate 
Cheers
mark
"That thing you're thinking - it wont be that."
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David Jenkins
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| posted on 16/4/08 at 12:27 PM |
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quote:
Originally posted by dan__wright
you can get lambda sensor sockets that have a cutout for the cable so you can get them on.
Hmm... when I google for the right target everything becomes bleedin' obvious! Roughly £5 or so for a 22mm Draper sensor socket, which
ain't too bad.
Ta.
[Edited on 16/4/08 by David Jenkins]
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Dangle_kt
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| posted on 16/4/08 at 12:34 PM |
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the free way of doing it would be to undo another nut and set your torque rench to the correct torque for the lamda, hold the wrench at a similar
distance from the socket as your spanner length is, and get a "feel" for what the correct torque is.
Obviously it wont be exact, but its an option.
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locogeoff
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| posted on 16/4/08 at 12:39 PM |
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Use a spanner as a torque multiplier as shown in Norbar
Webpage
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Mr Whippy
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| posted on 16/4/08 at 12:50 PM |
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when you feel the threads start to stretch stop...
Can't say I have much use for a torque wrench apart from head bolts. After a while you get to know how tight something should be. No I
don't strip threads or have things falling off 
Fame is when your old car is plastered all over the internet
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PAUL FISHER
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| posted on 16/4/08 at 01:12 PM |
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I just tightend mine just like fitting a spark plug David,just nip it up,no need to go daft,its connected to a cable so even it vibrates loose its not
going anywhere,it cant unscrew itself off all the way.
[Edited on 19/05/04 by PAUL FISHER]
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C10CoryM
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| posted on 16/4/08 at 04:07 PM |
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There actually is a way to torque things using an open end or crow's foot attachment on your torque wrench. Just need to do a little math.
But I'm just an auto mechanic so I've never actually done it .
O2 sensors just need to be tight enough to crush the sealing washer a little. And yes, I have an O2 sensor socket and a crowsfoot although never
torqued one before.
Cheers.
"Our watchword evermore shall be: The Maple Leaf Forever!"
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carpmart
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| posted on 16/4/08 at 04:45 PM |
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I'm with wippy! Don't bother with torque wrench unless its head bolts and many of these towards the end of the tightening process are +90
degrees not specific ratings any more!
You just need to develop that mechanical sypathy which is hard to teach but kind of in a sixth sense kind of way tells you something is tight enough
but not too tight!
No sure that helps?
Bottom line is it aint critical for the O2 sensor.
You only live once - make the most of it!
Radical Clubsport, Kwaker motor
'94 MX5 MK1, 1.8
F10 M5 - 600bhp Daily Hack 
Range Rover Sport - Wife's Car
Mercedes A class - Son's Car
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clairetoo
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| posted on 16/4/08 at 06:01 PM |
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There are two golden rules for tightening bolts - if it strips back it off half a turn , and if it snaps then its a quarter turn 
Seriously , just tighten it untill it feels `right` , something that is hard to teach and can be even harder to learn .
Its cuz I is blond , innit
Claire xx
Will weld for food......
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David Jenkins
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| posted on 16/4/08 at 06:42 PM |
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It's OK - I'm comfortable with spanner wielding - I was just wondering how gizmos like the lambda sensor get fitted properly.
cheers, David
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NS Dev
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| posted on 16/4/08 at 07:51 PM |
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seriously for that job "feel" will be fine.
For torquing stuff that a socket really won't go onto, as was said further up, use a torque wrench, crowsfoot wrench, ruler and calculator,
that's how we do injection press platen torquing at work! (though having done it a few times the values are all written down now so the ruler
and calculator are no longer needed)
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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Aboardman
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| posted on 16/4/08 at 09:24 PM |
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does the crowsfoot not just snap onto a normal torque wrench.
[Edited on 16/4/08 by Aboardman]
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vinnievector
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| posted on 16/4/08 at 09:47 PM |
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crows foot
crows foot ,they come in ring or spanner type ,with quarter or three eight, half in ,and 1 inch ratchet or torque wrench or breaker bar used mainly
for hard to get pipe fittings hyd pipes ext ,don't buy there expensive and you will hardly use it ,instead grab an old socket cut a slot in it
beef up the rest of the socket with more weld and a old spanner to it or some bar like the guys said its only a sen sore use some lock tight on the
threads or wire lock it sixteenth drill across the flats .
[Edited on 16/4/08 by vinnievector]
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C10CoryM
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| posted on 17/4/08 at 01:13 AM |
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quote:
Originally posted by Aboardman
does the crowsfoot not just snap onto a normal torque wrench
Yep, but they add extra length (leverage) to the torque wrench which you need to compensate for or your torque will be off.
"Our watchword evermore shall be: The Maple Leaf Forever!"
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Mix
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| posted on 17/4/08 at 11:03 PM |
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Err!! Not if you us ethem at 90 degrees to the axis of the wrench
Mick
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