quote:Originally posted by captaintobeys:
Pulled my thermostat. No difference
The trick with running a engine with no thermostat is to actually use a thermostat but remove it's mechanism so what is left is the thermostat "frame".
The "frame" of the thermostat is a calibrated restriction like a carburetor jet.
This slows the coolant flow to the correct speed, without it coolant will flow through the radiators to fast and not allow the coolant to be in the radiators long enough to lose the heat.
Problem is with a Cleveland you need something to deal with the bypass circuit as has been suggested or a large amount of coolant will recirculate inside the engine.
This is a photo of a thermostat that has had the "side skirt" removed allowing flow all the time but retaining the mechanism so when the temperature increases the bypass will still close.
It has the advantage that if it fails you will still have flow to the radiators, it's only the bypass that stops working.
I've found with electric fans the thermostat is not as important as it is with the fan belt driven mechanical fan that cars used to have unless you live somewhere that gets snow in winter.
I don't know if this will be benificial in every application.
To try it will cost the price of a thermostat.