No, you're saying that the thermostat controls the radiator. He's saying it regulates engine temperature, which it does. When the engine gets too hot the thermostat dumps water in the engine.

Believe it or not your engine has an optimal operating temperature it was designed to run at. Cooler is not always better. Without the thermostat to keep the engine in this designed range you'll probably experience problems. The thermostat also helps speed up initial warm up of the engine on start by stopping the water flow from the radiator. That reduces wear. The longer the engine runs cold the more wear you will have.

I understand the concept of trying to make it higher flow but unless you team that up with an oversized thermostat you have no way of regulating the engine temp. What happens when you go on a highway cruise in 10 degree weather?

 

This is such a stupid argument I can't believe it... It DOES control water flow IN AND OUT of the radiator. It also controls water flow IN AND OUT of the engine. I'm not going to waste time arguing about this any more. Its a dumb argument.

The block in my car is filled with hardblock up to the bottom of the waterjackets. Cooler is better for my set up.

You guys can do whatever you want with your car. I have had lots of high performance cars and my experience is that cooler is better.

ps. I don't cruise my car in 10 degree weather. The car is stored in the winter months and comes out in spring so its not an issue for me.

 

Your engine bay is extremly clean. I never had an issue on my civic with half radiator. I will be installing half radiator soon.

 

Need to be careful in the heat of summer. I say this because without the thermostat in the cooling system, there is nothing to slow down the coolant in the radiator enough for the fan to cool it down (regulate the water temp). So, if you're sitting (traffic or otherwise) the car will overheat. Why, because you'll be circulating hot water through the system and the radiator and fan can't keep up with it enough to cool it down. Thermostats are used for a reason. Don't believe me, try it on a hot day and check with us.

 

+1!

 

I think the OP knows about the whole always in open loop deal, and thus, I trust that this isn't his DD in the summer months.

For a DD, this is not a mod for you.

The previous owner of my car installed a new thermostat upside down, and it kept the car always in open loop. I don't think cooler is always better. In my case it was always messing with my cold enrichment in the AEM because it would fluctuate, but still maintain very low.

The OP knows why he did this mod and he's satisfied, so lets give him he benefit of the doubt and assume that he did his research and didn't just think it'd be "cool" to delete his thermostat (and housing).

 

The title on this thread is pretty misleading. It should be no thermostat runs cooler. It doesn't have anything to do with the radiator.

 

Now you have a huge space on turbo area, like it!

 

The Ecu goes into closed loop after certain conditions are met from varioius sensors, like the o2, and coolant temp sensor. After the vehicle is 'warmed up' its in closed loop.

 

The point is to show that the car is cooled to an appropriate level with a half radiator.

 

You be sure to check back to this thread in a few months after I prove you wrong, OK? This isn't my first rodeo and its not my first car that I've street driven with no thermostat in the housing. The last one was a turbocharged, mod-motor, Foxbody Mustang that went 8.70@155. I drove it on the street all the time to cruises, car shows, etc...and it never overheated. The second one I've owned was a twin turbo (twin Precision 76s) Foxbody Mustang that went 7.30@186mph. I took the car to cruises on hot summer days and it NEVER overheated in traffic.

If the radiator has enough CAPACITY and you have enough fan on it, the engine will stay cool enough.

 

I allways thought the engine wanted at least a certain temp? By running such a low temp I would think it would be bad for the engine. Isn't that why we let are engines get up to temp before we beat on it? Would the oil get up to a good enough temp to protect the engine?

 

That's cute that you've driven fast cars. I have driven and owned some fast mustangs also and I know for a fact that you won't be driving them in stop and go traffic. That's what I was refering to. Street driven open road doesn't count. You get back to us after you've driven that Evo in stop and go traffic. Ok?

 

wow the e-Muscles really have come out in this thread...

This will pretty much come down to the quality of the fan for stop-and-go traffic.
There are some good fans, and more terrible fans.
If you're using a stock quality fan (high speed, shrouded and large chunky blades) i dont think you'll have a problem.
It'll certainly overheat on the track though (race track, not drags).

But if it's a daily car, i dont think you'll have a problem.

 

Are you running e85? engine only needs half of a cooling system with that anyways. Usually the temperature is controlled by thermostat/ecu, so long as it's not thermally challenged