- Jul 25, 2011
- Reaction score
- Mid Michigan
Yes, get a temp gauge. You may not have a problem. That said, there's one thing I didn't see (or just missed) in the advice - ignition advance. I had some overheating problems. But, after checking all the boxes with respect to new radiator, correct thermostat, correct fan and shroud, etc., etc., the one thing that helped the most was advancing the timing just shy of engine knock. To over-simplify why this helps, I got a more complete burn in the cylinder, producing power, and less of a burn wasted as heat. As for the optimal amount of advance, in degrees, a lot of factors affect that, so you may have ten different answers for ten different cars. For me, I wanted to reach that almost-knocking point at the same time as total mechanical advance at WOT was around 34-36 degrees. For both my Dart and Cuda, I ended up with 10 degrees initial, 35 degrees at WOT, and 50 degrees at cruise. For my Dart, with a milder 340 and lower compression, I was able to run 89 octane fuel. For the 340 in my Cuda, with a little more compression I needed 93 octane fuel. Advancing either car another degree or two would cause knock. Lastly, running a little lower concentration of Glycol helps cooling, since water is about 1.5 times better in removing the heat. But the glycol serves other purposes, such as protection from corrosion and freezing. I like to run about 40% glycol with distilled water and mix the two well, before pouring them into the radiator.In my every present quest to tinker with and improve the reliability of my car, I was considering adding a new aluminum radiator. I do feel like my car seems hot. I don’t know how hot cause I haven’t installed a water temp gauge. But after 30 mins or so I get a warm firewall. And after some mild driving the other day, I could hear some pressure coming out of my rad overflow hose stub (my overflow hose is not installed currently). This motor has less than 1,000 miles on it since being rebuilt. Unfortunately, I don’t know who did the work or what components were used. I guess I just have some anxiety about doing damage.
I read about the factory shroud not fitting Champion radiators. I’m just looking for an easy upgrade. Any thoughts on brand suggestions is appreciated.