Just the other day My friend decided it was time to yank the engine out of his 92 164s and give it new rings and gaskets as it was acting like quite the air pump when running. We are also working to address the cooling issues that he experienced this summer. In portland we consistently get a month or so worth of 90+ days and It got very warm a few times and was having trouble keeping its cool in the heavy Portland traffic. From what has been found so far it appears this car has had repeat issues since new (multiple dealer service records for fans and relays), during disassembly we found the low speed resistor has just been bypassed by crimping the two wires together so my guess is theres a relay issue. At this point we are looking at options to fit a much beefier all aluminum radiator and a modern large fan with a standalone controller to completely bypass the "lovely" 90s Italian wiring. If anyone has done something similar, or if theres a good cost effective drop in, please speak up. I'm not afraid of fab work and have the equipment to make just about whatever bracketry would be required. I will also be wrapping the headers and fabricating heatshield for the headers and exhuast to attempt to control underhood temps a little bit more. Honestly i'm amazed at how wimpy the radiator in this things is, its significantly smaller than most 4 cyl radiators ive been around and this thing is like trying to contain a nuclear blast with a napkin.