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Torque wrench

 
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Joes924  
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PostPosted: Thu Jun 06, 2002 3:28 pm    Post subject: Reply with quote

Get one &use it before I had one I would overtighten [valve cover nuts, cambelt tensioner,theres more]anyway I paid for it this afternoon I stripped out the cam belt tensionergood thing I had another front coolant flange layen around..Get a torque wrench and keep it to spec.
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larso  
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PostPosted: Sat Jun 08, 2002 6:52 pm    Post subject: Reply with quote

My advice on torque:
1.Don't follow any torque specs in a manual; factory, haynes, anything.
2. ...Yes you can do stuff by feel, but sometimes doing stuff by feel without enough experience/knowledge of; the type of metals you are dealing, type of bolts you are dealing with
...isn't the best way either.
3.I try to use a combination of my own gut feeling, the manuals spec, along with experience.
4.Some torque wrenches can be off in the lower torque range...I had one of those click style automatic ones (that let you know once you've reached your requested torque). It was extremely "off" anywhere below 60 foot pounds. I torqued something to 30 foot pounds with the thing, and it would click at an actual 10 pounds instead...I tested it against another more accurate wrench. Try to torque something to 80 foot pounds, and it would click at an actual 80 foot pounds. So it was accurate in the higher ranges, but extremely off in the lower ranges. Can get you into a lot of trouble when you rely on a torque wrench.
5. I use the needle type torque wrench for lower torque settings because I find them more reliable.

I hardly ever use a torque wrench any more though, after finding one bad torque wrench it's scared me. Overall the best method I've found is having experience with certain nuts/bolts, and just doing everything by feel with the experience, except things like head bolts of course. You just have to get used to hollow bolts, aluminum, and anything that is "different", then you'll rarely need the torque wrench.
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carnut280  
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PostPosted: Sun Jun 09, 2002 3:16 am    Post subject: Reply with quote

that click-style torque wrench you speak of will become less acurate over time, IF you do not set it to zero during times of not using it...it stretches an internal spring when not at zero, and unfortunatly, the spring will stay stretched if left for long times...

(note: this is only a theory, but it makes a lot of sense, and I know lots of people who swear by this.)
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Joes924  
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PostPosted: Sun Jun 09, 2002 7:00 am    Post subject: Reply with quote

Thanks for thr info..
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Joes924  
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PostPosted: Sun Jun 09, 2002 7:00 am    Post subject: Reply with quote

Thanks for thr info..Hear that guys the torque wrench Im speken so hughly of could be off..
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baldwin  
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PostPosted: Sun Jun 09, 2002 6:54 pm    Post subject: Reply with quote

My torque wrenches came with a certificate of calibration en you can have it recalibrated every year or 10,000 "torque movements". I have no experience, so the torque specs en wrench are all I have...
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kaffine krazed  
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PostPosted: Mon Jun 10, 2002 4:44 am    Post subject: Reply with quote

Click style torque wrenches are only accurate within a certain range of there scale. Looking at snap-on web site they list there torque wrenches as being acurate from 20% of full scale to full scale. So if you have a torque wrench that highest torque is 200ft lbs you should not use it for anything less than 40ft lbs.

I will only use a torque wrech for the middle 50% of it's scale. But I rarely do work that I need to use a torque wrench on.
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numbers  
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PostPosted: Tue Jun 11, 2002 5:58 am    Post subject: Reply with quote

You should follow the recommended torque settings for all cars, at all times. I have four torque wrenches to cover all ranges.
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kaffine krazed  
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PostPosted: Tue Jun 11, 2002 1:02 pm    Post subject: Reply with quote

numbers, Do you really torque every fastener to the specified torque?
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larso  
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PostPosted: Tue Jun 11, 2002 1:35 pm    Post subject: Reply with quote

The recommended torwue specs for bolts in the haynes ends up making a nice snap sound and an expensive trip to the dealer. Don't follow any specs, unless you ahve experience and know the specs are right. Just my advice/opinion. Porsche bolts are expensive and a rip off, it's not worth breaking one because you read the Haynes manual.
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Joes924  
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PostPosted: Tue Jun 11, 2002 3:01 pm    Post subject: Reply with quote

What Larso, how so what dya mean is that what you canadians do to yuor nuts thats torque abuse I bet its a sick snappen sound
when your nuts are snapped,Joe
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