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bhartwell59 Samba Member
Joined: December 28, 2014 Posts: 788 Location: dallas, tx
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Posted: Sun Dec 04, 2016 8:47 am Post subject: German heat exchangers... how to tell? |
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Ideally, without prying the boxes open.
Thnx! _________________ '74 Zambezi green Ghia vert, autostick, 101k
'87 Jeep Wrangler, 4.2, 330k |
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60ragtop Bonneville Belt Bitch
Joined: March 13, 2006 Posts: 7800 Location: Big Wonderful WYO 82401
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Eric&Barb Samba Member
Joined: September 19, 2004 Posts: 24670 Location: Olympia Wash Rinse & Repeat
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Posted: Wed Dec 07, 2016 7:44 pm Post subject: Re: German heat exchangers... how to tell? |
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Guessing this is for a late model VW with 60 mm outlet HEs. You can peer up the exhaust pipe rear end with a flashlight and just see the ribs inside the pipe. Helps to be in a dark room or night to see though. _________________ In Stereo, Where Available! |
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Mellow Yellow 74 Samba Member
Joined: October 14, 2014 Posts: 1615 Location: Sydney, Australia
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Posted: Wed Dec 07, 2016 8:52 pm Post subject: Re: German heat exchangers... how to tell? |
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Eric&Barb wrote: |
You can peer up the exhaust pipe rear end with a flashlight and just see the ribs inside the pipe. Helps to be in a dark room or night to see though. |
Yep, the original ones have fins on the heat exchangers that go across a lot of the area of the box whereas the reproduction ones have small fins that give a lot less heat transfer.
See diagram in this thread: http://www.thesamba.com/vw/forum/viewtopic.php?t=347582 _________________ 1962 Karmann Ghia
1974 Deluxe Microbus
1985 Caravelle (Vanagon) |
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Eric&Barb Samba Member
Joined: September 19, 2004 Posts: 24670 Location: Olympia Wash Rinse & Repeat
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Posted: Wed Dec 07, 2016 9:08 pm Post subject: Re: German heat exchangers... how to tell? |
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Mellow Yellow 74 wrote: |
Yep, the original ones have fins on the heat exchangers that go across a lot of the area of the box whereas the reproduction ones have small fins that give a lot less heat transfer.
See diagram in this thread: http://www.thesamba.com/vw/forum/viewtopic.php?t=347582 |
Yes, but we were referring to the ribs inside the pipes not ones the outside. See above link which shows just a round inside pipe used in the repros. Round = less surface area to extract the heat out of the exhaust and less cooling for the engine. _________________ In Stereo, Where Available! |
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Mellow Yellow 74 Samba Member
Joined: October 14, 2014 Posts: 1615 Location: Sydney, Australia
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Posted: Wed Dec 07, 2016 10:01 pm Post subject: Re: German heat exchangers... how to tell? |
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Whatever, same difference _________________ 1962 Karmann Ghia
1974 Deluxe Microbus
1985 Caravelle (Vanagon) |
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swavananda Samba Member
Joined: February 14, 2009 Posts: 889 Location: Can o' Scruz
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Posted: Wed Dec 07, 2016 10:01 pm Post subject: Re: German heat exchangers... how to tell? |
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I'm not sure all Original German years have this. But only OG Germans ones do. That is ,The aluminum Heat sink casting protrudes a bit from the outer skin, Seen by the exhaust port .Like this.
Original VW Mexico and Brazil may be different from VW Germany. |
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Eric&Barb Samba Member
Joined: September 19, 2004 Posts: 24670 Location: Olympia Wash Rinse & Repeat
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Posted: Wed Dec 07, 2016 10:09 pm Post subject: Re: German heat exchangers... how to tell? |
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Mellow Yellow 74 wrote: |
Whatever, same difference |
Sorta, sorta not. The 50 mm outlet OG ones for 40 HP almost always have a round inside of the pipe. Those do not heat as well as the later ribbed inside and do not cool the engine as well in warm weather. _________________ In Stereo, Where Available! |
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