Heat Exchanger to head nut torque |
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Heat Exchanger to head nut torque |
jmalone |
May 22 2013, 09:53 PM
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#1
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Member Group: Members Posts: 119 Joined: 3-July 09 From: reno,NV Member No.: 10,529 Region Association: Northern California |
Can anyone confirm the torque figures for the heat exchanger to head nuts? I have initial torque at 7.3 ft/lb and final torque at 24.5 ft/lb.
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JeffBowlsby |
May 23 2013, 05:01 AM
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#2
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914 Wiring Harnesses Group: Members Posts: 8,524 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None |
The torque value is not printed anywhere. Use only the minimum torque to get them to seal, its too easy to strip the studs if overtightened. Are your coppper exhaust gaskets annealed...very important to do.
Start low and tighten gradually. I prgressively tighten them, test them, then let them cool before tightening some more. Mine ended up at 14 ft-lbs to get a seal. |
CG-914 |
May 25 2013, 10:45 PM
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#3
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Member Group: Members Posts: 326 Joined: 27-December 10 From: LA/OC CA Member No.: 12,526 Region Association: Southern California |
The torque value is not printed anywhere. Use only the minimum torque to get them to seal, its too easy to strip the studs if overtightened. Are your coppper exhaust gaskets annealed...very important to do. Start low and tighten gradually. I prgressively tighten them, test them, then let them cool before tightening some more. Mine ended up at 14 ft-lbs to get a seal. How do you anneal them? In the stove oven? What temp and how long? |
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