Hey does anyone know if this is a electronic version of a torque wrench?
It look cool! http://cgi.ebay.com/ebaymotors/ws/eBayI ... %3AIT&rd=1 Is the torque settings of the heads that sensative? Thx Bill
Has anyone ever seen one of these tools?
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raygreenwood
- Posts: 11912
- Joined: Wed Jan 22, 2003 12:01 am
Yes. I have a manual version of it. Ran me about $25. Yes, the guage is very precise...but the method is not any more precise than a torque wrench in good condition.
Saab uses this mthod only on its cyclinder heads. The object is that a clean...lightly oiled (with the exact amount of proper oil,) head bolt...in un-worn threads...at standard room temperature...should be made to be hand tight...then torqued an exact # of degrees around.
It is a very exacting method....but is only accurate if there is no wear on the bolts, the threads, no extremes in temperature, the exact right lubricant etc. What it is really good for is making sure the crush rate on gaskets is not exceeded. Its used when the amount of torque required past initial lock-up on a bolt....is beyond the accuracy range of a basic torque wrench. Its kinda like when you torque the bolt to a basic 25 ft lbs to bring everything into contact....and then only require like 1/2 ft lb or so to give proper gasket crush. An inch Lb wrench may not have the accuracy either...so at this point, based on the pitch of the threads of the bolt....you can crush a gasket a specific dimension by using this tool. Ray
Saab uses this mthod only on its cyclinder heads. The object is that a clean...lightly oiled (with the exact amount of proper oil,) head bolt...in un-worn threads...at standard room temperature...should be made to be hand tight...then torqued an exact # of degrees around.
It is a very exacting method....but is only accurate if there is no wear on the bolts, the threads, no extremes in temperature, the exact right lubricant etc. What it is really good for is making sure the crush rate on gaskets is not exceeded. Its used when the amount of torque required past initial lock-up on a bolt....is beyond the accuracy range of a basic torque wrench. Its kinda like when you torque the bolt to a basic 25 ft lbs to bring everything into contact....and then only require like 1/2 ft lb or so to give proper gasket crush. An inch Lb wrench may not have the accuracy either...so at this point, based on the pitch of the threads of the bolt....you can crush a gasket a specific dimension by using this tool. Ray