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T-stat orientation seems right in that the spring part is in the bypass path....thats what the manual shows.
I think the T-stat never totally blocks the bypass path and is like a mixer function...I don't see how the construction would allow for totally blocking the bypass path off...I don't even think the system would want that to happen...hammering like that.
Anyone?
Going off into theory now, it would seem most ideal to me for thermostat full open to full close the bypass loop.
Having it be progressive would be most ideal.
Thermostat only being 10% open would still allow 90% of the flow from the bypass loop. Thermostat 100% open should allow 0% hot coolant from the bypass.
Because if the coolant is hot enough to get thermostat full open - you shouldn't want to bypass any hot coolant past the radiator.
I wonder if there would be an effective way to rig this up But that's an entirely different thing. Car should be cool now so we'll see what I can do.