Originally Posted by ShawnQ
Brian,
Isn't it well known that the fluid is used for both engine and I/C air cooling?
SQ
YUP!
Originally Posted by Steve Hellums
I checked out the heater hose, it comes from the water pump down to a real small pump that's mounted kind of on the bumper above the HE pump. I guess these strange little car's have their own cabin heater pump
. It leaves the pump and goes up on top of the fender well to what I'm guessing are two variable solonoid valves from the duel climate control.
Thanks Steve - I couldn't get a good look but I wanted to be sure that separating the two systems would not require re-routing the cabin heat hoses.
To summarize - I feel that more engine coolant is getting into the overflow tank then just during extreme overheat conditions (radiator belching) and possibly exchanging heat.
I like the idea of isolating the two systems by adding a small radiator tank and then utilizing the stock tank for the IC, but from what you've discovered I would not want to re-route the HE coolant lines to "flow" thru the tank (if the tank has baffles/sections)
Adding a larger, remote mounted tank is the best upgrade for the racers and extreme performance, but for cost effectiveness, adding the small radiator tank will allow me to upgrade in phases.
1. Add small overflow tank for radiator to isolate both systems (under $75)
2. Upgrade to a larger HE ($450)
3. Upgrade to the Johnson Marine Pump ($100)
4. (if needed) replace the stock IC tank with an aftermarket aluminum "flow thru" type tank in the same location or remote.
I wonder if there is a more effective cooling fluid mixture that can be used for the HE that you might not use for a engine coolant?