http://forums.bimmerforums.com/forum/showthread.php?t=1759358
As some other thread here discusses, I’ve been using a double-pass radiator that with a few mods can be made to work. But this thread has me thinking that 1) Triple pass is do-able and 2) The radiator cap port doesn’t need to be sealed off.
This year I’ve destroyed 3 radiators, having had a few conflicts with walls of various types. My solution cost around $350 total but the ideas in this thread indicated that maybe it can be done for ~$200.
Subject change, I have a NIB OEM early style radiator looking for a good home. Came with the New #6.