A Stewart Components tech article says that with modern radiators, you are better off with single pass: Stewart Components | | | | | | | | | | | Stewart ComponentsHOME ONLINE STORE Accessories BMW Water Pump Chevy Bolt Kits Electric Water Pumps Ford 4.6L Pump High Flow Water Pumps Pro Series | | | | View on stewartcomponents.com | Preview by Yahoo | | | | | That is partly based on the pressure drop across the radiator. With the long coolant path is Pantera, seems like it would be even more important to avoid restrictions. Ken From: Jack Donahue <demongusta@gmail.com> To: "detomaso@server.detomasolist.com" <detomaso@server.detomasolist.com> Cc: "detomaso@server.detomasolist.com" <detomaso@server.detomasolist.com> Sent: Tuesday, August 9, 2016 12:23 PM Subject: [DeTomaso] Radiator Dilemma Hey all - I need some good advice on radiators. I currently have a Fluidyne performance unit without a shroud. I've been told that a shroud is a necessity, which I understand. I've had it for about 12 years now - no leaks. The rumblings on The List lean towards a unit by Dennis Quella(?) - don't know the correct spelling or the company, but the last I had read from someone was just to get his radiator and "be done with it". I think it was a double-pass (I guess that's good) - and I assume it's shrouded. Another side of me asks - which is better - copper or aluminum? And Why? I know the copper units are heavier, but I am not concerned about extra weight. I am familiar with the company - Brassworks - they have been at it since the early 1900's. Ken and Lela MacArthur had mentioned Brassworks in July. So - here we go - I know the discussion will generate a fair amount of opinions - which I always welcome, since it will generate more questions too. Looking forward to hearing from all the experts - i know you are out there. jack #4348 _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list DeTomaso@server.detomasolist.com http://server.detomasolist.com/mailman/listinfo/detomaso To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. A Stewart Components tech article says that with modern radiators, you are better off with single pass: [1]Stewart Components [2]image [3]Stewart Components HOME ONLINE STORE Accessories BMW Water Pump Chevy Bolt Kits Electric Water Pumps Ford 4.6L Pump High Flow Water Pumps Pro Series [4]View on stewartcomponents.com Preview by Yahoo That is partly based on the pressure drop across the radiator. With the long coolant path is Pantera, seems like it would be even more important to avoid restrictions. Ken __________________________________________________________________ From: Jack Donahue <demongusta@gmail.com> To: "detomaso@server.detomasolist.com" <detomaso@server.detomasolist.com> Cc: "detomaso@server.detomasolist.com" <detomaso@server.detomasolist.com> Sent: Tuesday, August 9, 2016 12:23 PM Subject: [DeTomaso] Radiator Dilemma Hey all - I need some good advice on radiators. I currently have a Fluidyne performance unit without a shroud. I've been told that a shroud is a necessity, which I understand. I've had it for about 12 years now - no leaks. The rumblings on The List lean towards a unit by Dennis Quella(?) - don't know the correct spelling or the company, but the last I had read from someone was just to get his radiator and "be done with it". I think it was a double-pass (I guess that's good) - and I assume it's shrouded. Another side of me asks - which is better - copper or aluminum? And Why? I know the copper units are heavier, but I am not concerned about extra weight. I am familiar with the company - Brassworks - they have been at it since the early 1900's. Ken and Lela MacArthur had mentioned Brassworks in July. So - here we go - I know the discussion will generate a fair amount of opinions - which I always welcome, since it will generate more questions too. Looking forward to hearing from all the experts - i know you are out there. jack #4348 _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list [5]DeTomaso@server.detomasolist.com [6]http://server.detomasolist.com/mailman/listinfo/detomaso To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. References 1. http://stewartcomponents.com/index.php?route=information/information&information_id=13 2. http://stewartcomponents.com/index.php?route=information/information&information_id=13 3. http://stewartcomponents.com/index.php?route=information/information&information_id=13 4. http://stewartcomponents.com/index.php?route=information/information&information_id=13 5. mailto:DeTomaso@server.detomasolist.com 6. http://server.detomasolist.com/mailman/listinfo/detomaso