cooling

inertia said

Your overheat problem would likely be cured by reverting back to clutch fan.. Many are,, there are several threads related,, do a search for "overheat" under the " heating/cooling" forum,, there are numerous posts...



The by-pass hose goes to the suction side of the pump, as does the heater hose..
The function of the b/pass hose is to keep water circulating in the block while the t/stat is closed, preventing potential localized hotspots,, this also helps warm and circulate water to the heater sooner, before the t/stat opens, and all the cold stagnant coolant (rad) is warmed..

hope it helps

Click to expand...

200 is not overheat by any means. There will be absolutely zero issue with running the engine at this temp. My car cools much better with the contour fans then it did with any clutch fan. You need to look at the setpoint for when they turn on if you want it to run cooler.

My opinion is that you want the engine to run between 180 and 190, which the 180 thermostat helps with. You'll get complete combustion and not be wearing the bores out with unburnt/unatomized fuel. If the engine pings, you have too low octane gas for your compression.

In a newer car, they pretty much all run at at least 200 all the time...and allow up to 230 in some cases when sitting in traffic.