cooler denser air, more fuel, more power. If you take it easy, better milage.

 

The ecm monitors engine temp (among everything else)...Remember...no choke....cold,the engine has to have more fuel just as your choke did...the engine runs most efficient hot

 

That makes sense. So really if we want to optimize are cooling system we should maybe look at getting abetter, more race inspiredradiator, and electric cooling fans.

 

electric fans help a lot..but i gauran-f'n-tee ya,your dropping mpg by putting cold stats in

 

does anybody make a selectable t-stat? or adjustable? If not then they should.

 

I have a 160 in mine and noticed like 5 miles less to the tank... Made more power, too... I'd say get the 160 and toss it in there... You will love the results... And it WILL kill your grass!!!

 

Then you won't have to worry about cutting the grass, and will have more time for mods.

 

Most vehicle thermostats are a made by expanding metal opening a valve to let colder radiator water into the engine. So, a 180 degree thermostat essentially just opens and closes a little at a time to balance the internal engine temp to 180 degrees. I don't know about newer vehicles or not but the only way you could have a selectable thermostat would be to put a thermometer, computer (or mechanical switch), and a actuating valve.

Much simpler are metal expansion valves

 

Or, hook up to tubes with different thermostats in them, and havetwoselectable switches as to which tube is used.

 

It's like a 2" hose, isn't it? You'd need like a steam valve to do the switching. Still, on the older engines, it's two bolts. For the cost of about an hour of work and two little gaskets every six months, it wouldn't be hard to do it manually. (Not sure about new engines)