Colder plugs, blocking the heat to the intake manifold, a 160 high flow thermostat, and limiting total timing. I had a small spark knock issue early on with hard acceleration, but managed to tune it out through several progressive steps. Static compression is 10.1 and dynamic is 7.99. You may have read I've just recently installed a hot slant 6 in my 64 Valiant. I've never run anything but straight water or a mix of water and coolant, like I am now. Nothing personal, that's just how I see it. I consider things like that a gimmick to get your money and a crutch for an otherwise poorly set up cooling system. You'll get no support from me for Evans coolant. I am almost ready to dump $200 worth of coolant and go back to 50/50, but I wanted to see if anyone else has a similar experience. (I also had ping before rebuilding.)Ģ) Higher under-hood temperature causes more fuel to boil off after parking. Retarding timing didn't solve that problem. The water pump is a stock replacement pump.ġ) Compression is about 8.9:1 static, 7.7:1 dynamic, and it pings under load even with 93 octane. The radiator was overhauled by a good shop while the engine was out, but it is the smaller (non-AC) stock slant radiator. I tried replacing the thermostat and it didn't make a difference. Once the engine warms up, the needle is quite steady in that spot regardless of driving conditions. Before the rebuild the needle would be consistently below the midpoint of the gauge, and now it's consistently near the high end. 210 is consistent with what I see on the temp gauge while driving. The radiator reads 200-210 at the top and 160-170 at the bottom. Pointing an infrared thermometer at the thermostat housing, where it used to read 190 it now reads 210. Ever since then it's been running hotter than before. I rebuilt my slant last year and decided to splurge on this non-water coolant while the water was all out of the block. Could Evans waterless coolant cause my engine to run consistently too hot? Has anyone gone back from Evans to 50/50 and found lower running temperature?
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