coolant reroute without heater
#25
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Let us not forget that the water pump is a centrifugal unit which will flow less water when the flow is restricted. It will not blow open seals or lines and will only flow through the little tiny "jigglered" hole in the OEM thermostat unless a larger hole is drilled.
A 3/16 hole in the thermostat mounted in the rear will allow some critical flow during warm-up to keep the engine from developing hot spots and allow the thermostat to see the actual temperature coming from the engine. No flow through that thermostat will cause too much heat to build in the rear of the engine before it opens.
Blocking the flow completely to the heater(or a clogged heater) in the non-rerouted engine will cause severe heating in the rear of the engine at all times.
A 3/16 hole in the thermostat mounted in the rear will allow some critical flow during warm-up to keep the engine from developing hot spots and allow the thermostat to see the actual temperature coming from the engine. No flow through that thermostat will cause too much heat to build in the rear of the engine before it opens.
Blocking the flow completely to the heater(or a clogged heater) in the non-rerouted engine will cause severe heating in the rear of the engine at all times.
#29
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You can't just dump the thermostat - you have to have some restriction there. The water pump isn't positive displacement - the system relies on temperature differentials to pull water through the motor/radiator.
I have a gutted thermostat installed in the back. No heater core, no heater core lines, no coolant line except the ones for the turbo and the big one to the radiator. The car takes a little while to warm up, and on very cold days it will run ~150*F on track, but otherwise it functions as normal.
I have a gutted thermostat installed in the back. No heater core, no heater core lines, no coolant line except the ones for the turbo and the big one to the radiator. The car takes a little while to warm up, and on very cold days it will run ~150*F on track, but otherwise it functions as normal.
#32
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No idea. E85 should make the engine run cooler. As a rule of thumb, it's more efficient/powerful to run a motor as hot as you can (assuming your ECU doesn't pull timing), but I try and keep the track car as close to 180 as I can to promote motor health.
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