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drlong
Samba Member
Joined: May 11, 2006
Posts: 74
Location: Waterloo, Iowa
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 Posted: Sun Jul 10, 2011 5:58 pm Post subject: Melting heat exchanger? 82 air cooiled |
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Is it possible / has anyone seen the insulating material inside a air cooled heat exchanger melt? I have this terrible plastic/ chemical melting smell. When I looked under the bus it looks like soldier has came out of the weep hole on the left heat exchanger and dripped back on to the exhaust.
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FNGRUVN
Samba Member
Joined: October 27, 2007
Posts: 2237
Location: Fort Collins, CO
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| Posted: Sun Jul 10, 2011 7:49 pm Post subject: |
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Is the blower hooked up to the alternator? If it is, is the air flow blocked or restricted?
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drlong
Samba Member
Joined: May 11, 2006
Posts: 74
Location: Waterloo, Iowa
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| Posted: Mon Jul 11, 2011 3:45 pm Post subject: |
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the air tube from alternator to the left side heat exchanger was off. It is back on now.. It really looks like the heat exchanger was melting... NOT GOOD....
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Mr Brown
Samba Member
Joined: January 30, 2006
Posts: 161
Location: Somewhere In Canada
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| Posted: Mon Jul 11, 2011 8:22 pm Post subject: |
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| Mine were melted by the previous owner, the ducting forward of the heat exchangers was clogged. |
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drlong
Samba Member
Joined: May 11, 2006
Posts: 74
Location: Waterloo, Iowa
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| Posted: Tue Jul 12, 2011 6:19 am Post subject: |
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That's crazy. What is the melting point of Aluminum?
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RCB
Samba Member
Joined: September 05, 2005
Posts: 4143
Location: San Francisco-Bay Area
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| Posted: Tue Jul 12, 2011 6:23 am Post subject: |
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| drlong wrote: |
| That's crazy. What is the melting point of Aluminum? |
Can you post a picture of it. |
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xoo00oox
Samba Member
Joined: February 11, 2010
Posts: 2672
Location: East Nassau, NY
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| Posted: Tue Jul 12, 2011 6:50 am Post subject: |
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| I also have seen them melted to a pudle of aluminum in the bottom of the heat exchanger. |
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drlong
Samba Member
Joined: May 11, 2006
Posts: 74
Location: Waterloo, Iowa
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| Posted: Tue Jul 12, 2011 9:09 am Post subject: |
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Yes it seems as if it has puddled in the bottom and had dripped out the weep hole. It looks like aluminum has a melting point of 1200 f.. I'm afraid I have engine damage now. This must be made of cheaper stuff than the one in say a 1972.. kinda crappy. time to do a leek down test.
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drlong
Samba Member
Joined: May 11, 2006
Posts: 74
Location: Waterloo, Iowa
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| Posted: Tue Jul 12, 2011 9:14 am Post subject: |
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Maybe they are not made of exactly aluminum I can''t see it really getting to 1200F
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