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Torque specs.

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Old Jan 21, 2013 | 05:19 PM
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Default Torque specs.

I am thinking of removing my rear jug to replace the bad gaskets. I am confused on the exact torque specs of the bolts. Is there anything online or any known videos on reassembling the top end?
TIA
Barry In MO.
 
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Old Jan 22, 2013 | 04:16 PM
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You will have several torque then the last one is turn the bolt 90 degrees. I use a gauge for the 90 degrees that Harley sells. You need to get the 90 degrees as close as possible or it will affect your torque.
See if this link works
http://www.harley-davidson.com/gma/g...bmLocale=en_US
 
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Old Jan 27, 2013 | 01:32 AM
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My engine builder, who has world records at Bonneville, gave me his method. Use the torque pattern from Harley, go 10 lbs, 20 lbs, 25, 30, then 35. Let it rest for about a cig or about 5 min, then final torque to 38 lbs. Much more accurate than the 90* thing and easier to do.
 
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Old Jan 27, 2013 | 01:33 AM
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This is for stock style head gaskets. If you are using steel ones, they require a higher torque.
 
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Old Jan 27, 2013 | 08:25 AM
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Originally Posted by kkiley
My engine builder, who has world records at Bonneville, gave me his method. Use the torque pattern from Harley, go 10 lbs, 20 lbs, 25, 30, then 35. Let it rest for about a cig or about 5 min, then final torque to 38 lbs. Much more accurate than the 90* thing and easier to do.
Jame's gaskets with there metal base gaskets use to have about the same thing but after blowing several head gaskets I went to Harley s method and never blew one again. But give it a try and let us know how it works.
 
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Old Jan 27, 2013 | 04:14 PM
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Originally Posted by kkiley
Much more accurate than the 90* thing and easier to do.
Initial torque and then turn to a certain degree is by far the most accurate way to load a fastener. You torque the fastener to a low torque, where there is not a lot of friction. Then torque to a predetermined angle to put the proper load on the fastener.

We use this method on all fasteners that hold jet engine rotors together.
 

Last edited by Dan89FLSTC; Jan 27, 2013 at 04:17 PM.
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Old Jan 27, 2013 | 04:18 PM
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Originally Posted by Dan89FLSTC
Initial torque and then turn to a certain degree is by far the most accurate way to load a fastener. You torque the fastener to a low torque, where there is not a lot of friction. Then torque to a predetermined angle to put the proper load on the fastener.

We use this method on all fasteners that hold jet engine rotors together.
I agree and you need a good way to tell you get them all at the proper angle. This is what I use.
 
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