Quote:
Originally Posted by misterp266
This is important.
You should never have the engine running without the water pump running! Your temperature gauge may show 160* at the crossover but without circulation, it could be 280* or higher at the center exhaust port area.
If you run a thermostat, there has to be a path for coolant to circulate before the thermostat opens. If you eliminate your heater core, the bypass is the only path and it’s quite restrictive. Eliminate that, and there is no path. You can’t run a 55GPM Meziere pump without a path to circulate the coolant.
In a modified engine with a modified coolant system, I would think that a restrictor plate like Gach runs is the way to go. In a daily driven street car, a thermostat would be recommended.
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I fire it off today for first time since winter. Finally got garage addition done. I took your advice and turn pump on. Don’t want center exhaust getting to 280 degrees. and having different plug readings. Not much if any take longer to get to 180 degrees.