Hans, Everything is bolted together with four rods that run the length of the cooler. We had to sacrifice four tubes to achieve this. Because of the tube configuration, the ends have to be clocked perfectly to line up (I have added alignment marks on the ends). I used 70 Buna N, size 250 “O” rings on the ends for sealing, and this is how Jerry does it with the PVC tube also. Last month he switched over to the aluminum tube as well when Mark Miller's engine was on the dyno and the PVC intercooler housing started to melt from the heat.
If you are going to use something like this, don’t forget to add the drain back lines for the water. It can get very cold at night at both Bonneville and Elmo and the water might freeze in the tubes. Tony
Ends have been modified for Wiggins clamps.
“O” ring and machined weld-on for the –12 water lines.