Broken bolt flange on heat exchanger, Can it be welded back on? |
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Broken bolt flange on heat exchanger, Can it be welded back on? |
DC_neun_vierzehn |
Jun 2 2023, 03:58 PM
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#1
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Member Group: Members Posts: 393 Joined: 16-November 20 From: Delaware Shore Member No.: 24,893 Region Association: MidAtlantic Region |
During reinstall of a freshly rebuilt motor we discovered one of bolt flanges (also called dog ears?) on the driver's side heat exchange was cracked at the weld. We decided to proceed with installing knowing that I would need to get it addressed soon. Well ... that flange completely broke off when mounting it.
I have no experience welding nor do I own the welding equipment - my question is can that be welded back on good as new ... or do I have to replace the exchanger? The heat exchanger is in great shape with no signs of rust or leaks anywhere. So it would be great if I can have it welded vs. needing to replace. Thanks in advance. |
rhodyguy |
Jul 17 2023, 11:34 AM
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#2
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,092 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
Refrain from fully torqueing the nuts right off the bat when installing. Increasing the torque value to cure an exhaust leak is a bad idea. Inspect the ear welds BEFORE installing.
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DC_neun_vierzehn |
Jul 17 2023, 05:14 PM
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#3
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Member Group: Members Posts: 393 Joined: 16-November 20 From: Delaware Shore Member No.: 24,893 Region Association: MidAtlantic Region |
Refrain from fully torqueing the nuts right off the bat when installing. Increasing the torque value to cure an exhaust leak is a bad idea. Inspect the ear welds BEFORE installing. Makes sense. Thank you. For the record, the torn HE dog ears were inherited from the PO. The only thing I did (with the help from kind, generous, fellow 914 owner) was drop the motor and trans to send off for rebuilding. We noticed the torn dog ears when the HEs were off the car. I will keep your guidance in mind when I get the HE back. What is the correct torque for the HE flange nuts? |
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