RE: Torque Wrench

RE: Torque Wrench
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RE: Torque Wrench - 4/2/2007 3:34:44 AM

js3

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English as a Second Language.

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RE: Torque Wrench - 4/2/2007 6:04:15 AM

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Well they use to have spell check in here but now that is gone I guess i could get a dictionary but the dog would prob eat it.

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RE: Torque Wrench - 4/2/2007 6:09:59 AM

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Truth is I have no English blood in me anyway. I,m Irish and American Indain. So I realy could care less if I can speek and spell this forin tonge.

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RE: Torque Wrench - 4/2/2007 10:44:01 PM

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There's also a less expensive alternative on Darrol's website along with info about what torque values he uses.

Torque Tool

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RE: Torque Wrench - 4/2/2007 10:52:08 PM

daven

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Stan,

Yes, but his site uses the term Inch Ounces which is incorrect. It should list them at Inch Pounds.

Dave

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RE: Torque Wrench - 4/3/2007 11:51:48 AM

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I have one of Darrol's torque wrenches. It has inch pounds written on it and on the table that came with it.

After stripping threads in a TT, I use it all the time now.

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RE: Torque Wrench - 4/6/2007 2:16:43 PM

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Dave,
Is it incorrect or just lacking the conversion?
11 inch ounces is = to 0.6875 inch lbs.
33 inch ounces is = to 2.0625 inch lbs.

The wrench comes with a table for conversion.

Stan

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RE: Torque Wrench - 4/6/2007 2:40:01 PM

daven

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The site should list his proper torque setting for head bolts at 11 inch pounds and glow plugs at 33 inch pounds.

Currently, it lists both as inch ounches, which would not be nearly tight enough.

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RE: Torque Wrench - 4/7/2007 12:15:37 PM

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I beleave that is the torqe wrench some of the guys down here have. The add is wrong it is in lbs. So far all the guys have had no prob. with this tw.

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RE: Torque Wrench - 4/7/2007 1:21:18 PM

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While on the subject. Torque settings are based on the head of the screw or bolt bottoming out on a solid flat and/or properly countersunk mating surface.

The Nelson Glo Plug does not have this condition. There is no head or solid surface to bottom out on. The threaded end of the plug has a chamfer which mates and is supposed to seal with a chamfer in the bottom of the threaded hole in the cylinder head. The material thickness below this chamfer and to the top inside of the combustion chamber starts at zero and angles outward and upwards to the diameter of the threaded hole. It is possible with overtightening, to force the thinner part of this chamfer downwards into the combustion chamber. The designed shape of the combustion chamber would then be corrupt. It is very easy to do this when screwing a plug into a hot cylinder head.

33 in-lb torque might be the correct setting for the size of the plug thread if applied to a normal screw or bolt application. It may be damaging to the combustion chamber shape in the Glo plug application.

Be carefull and inspect the head closely.

Ed S

< Message edited by Ed Smith -- 4/7/2007 1:23:18 PM >

(in reply to BUDMAN27)

RE: Torque Wrench - 4/7/2007 1:40:06 PM

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Dave,
I have modified the wording in Darrol's tips to correctly state inch lbs. Thanks.

Ed you evidently haven't read the bit by Darrol about torque on the Nelson plug. For your enjoyment...

quote:

The heads on our racing engines with the Nelson plugs are very critical to not over tighten. If you add a little extra arm to make sure that it does not leak, you may have just ruined the head. What happens is that the seal on the top of the dome of the head is pushed down and it changes the shape of the double bubble head. 33 inch lbs. is tight enough for the plug not to leak or come out. Yet, it does not destroy the heads.

Since I have been using a torque driver to tighten my plugs, I have not distorted a head from putting too much arm on it. I also have not had a plug come loose or leak. At $35.00 per head, it does not take many to pay for your torque driver.

Copied from Darrol Cady. Emphasis on "Yet, it does not destroy the head."

Stan

< Message edited by StanDouglas -- 4/7/2007 1:43:12 PM >

(in reply to Ed Smith)

RE: Torque Wrench - 4/7/2007 2:02:39 PM

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Hi Stan,

No I have not read Darrols web site. With the torque discussion I like to err on the side of caution.

What I find truly frightening is that Darrol and I are pretty much on the same wave length!!

Ed S

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RE: Torque Wrench - 4/7/2007 2:24:20 PM

daven

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Thanks,

The wording there has messed me up twice over the past couple years (both times I was considering buying a torque wrench). I'd like to think I have a pretty good feel for how tight I should go, but I'd like to make sure. Especially with Glow Plugs, I know I sometimes err on the tight side. Not sure if I've ever warped one, but I don't want to take a chance with the new motors.

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