Use a torque wrench in difficult places

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Anton Seelmann
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Use a torque wrench in difficult places

Post by Anton Seelmann » Wed Apr 29, 2020 3:09 pm

When the engine is installed or in other situations, it is a problem to use the torque wrench for example with cylinder head bolts. Here's a little tip:
1. Tighten an easily accessible screw with the desired torque.
2. Use the torque wrench to readjust a ring / open-end wrench with welded-on pick-up on this screw (step by step, starting with a setting that is certainly smaller). Usually it is a few degrees less.
3. Now tighten the screws at the problem point with the same angle.
See the following photos:
1-step-1.JPG
2-selfmade-tool.JPG
3-adjust.JPG
4-use-example.JPG
5-use-example.JPG


Gonenorth
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Re: Use a torque wrench in difficult places

Post by Gonenorth » Thu Apr 30, 2020 9:07 am

I just use a crow's foot to get to the head bolts near the firewall. Same goes for most other tight places


John Codman
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Re: Use a torque wrench in difficult places

Post by John Codman » Thu Apr 30, 2020 10:06 am

I remember from my ASE-certified days that if you are trying to torque a number of capscrews to an even torque, you must use exactly the same torque wrench hookup on all of the fasteners. That means that if you are using a six-inch extension on any capscrew, you must use it on all of the capscrews. If you decide that you need a flex socket and a 12" extention to tighten one difficult to access screw, you need to use the 12" extension and flex socket on all of the fasteners.


jab35
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Re: Use a torque wrench in difficult places

Post by jab35 » Thu Apr 30, 2020 10:41 am

Anton suggests' backing off the setting' to correct for the added length. I'd say this is fine for this application, and you note Anton is keeping the 'extension' in line with the torque wrench handle, doing so simplifies the correction calculation.

With the 'extension' in line with the handle as shown, correct the torque wrench setting by the ratio of original handle length to the extended handle length, original plus length of extension, measured center of bolt to pivot point in wrench handle. If the extension adds 10% length to the handle, back off the setting 10% and proceed. It ain't rocket science and it is a model T, drive careful everyone, jb

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Walter Higgins
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Re: Use a torque wrench in difficult places

Post by Walter Higgins » Thu Apr 30, 2020 11:41 am

Guessing on the setting is not necessary. There is a formula for this and, easier yet, a few online calculators out there:

https://belknaptools.com/extensions-calculator/

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ABoer
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Re: Use a torque wrench in difficult places

Post by ABoer » Thu Apr 30, 2020 11:55 am

I use this , special for the three bolts on the back
Toon
IMGP1072.JPG
IMGP1070.JPG

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Duey_C
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Re: Use a torque wrench in difficult places

Post by Duey_C » Thu Apr 30, 2020 7:28 pm

Thank Anton!
Since I lost my mind mind, I feel more liberated

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Ed Fuller
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Re: Use a torque wrench in difficult places

Post by Ed Fuller » Thu Apr 30, 2020 8:58 pm

When using a crow’ foot or other adapters with a torque wrench, if you turn it 90 degrees from the handle of the wrench like this you don’t need to do any calculations.
666AD1CE-CAC9-4E32-BE42-34CE3FA780A1.jpeg


If it is in this direction in relation to the handle, you need to calculate a lower torque setting since the adapter is adding more leverage.
2DB07551-8198-4293-A1FE-61F2C354F6EC.jpeg


If it is in this direction in relation to the handle, you need to calculate a higher torque setting since this direction is decreasing your leverage.
7C0ACE1D-67F3-4233-911E-F631B366BFE3.jpeg


Altair
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Re: Use a torque wrench in difficult places

Post by Altair » Sat May 02, 2020 3:00 pm

Some torque values are only addressed in the number of turns on a screw, not foot or inch pounds.
I assembled a Ford V6 with all the values in number of turns, no torque wrench was used. I checked the
assembly with a torque wrench and the values were exactly the same as with a torque wrench.

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