Bom's Evo

iTrader: (14)

I was wondering what are some ways of keeping the engine bay cooler?

I've noticed the 4b11 motor engine bay is a lot hotter than the 4G63.
Even though I haven't scientifically measured this, I believe it would be true because of how the turbo is now in the back by the firewall.

I know that the coolant temps are normal, but the summer is here and its going to be REAL HOT!

Also, I've notice that my IC pipes are extreme hot as well. On my EVO 8 I could touch the upper pipe without getting burned. Whereas the 4b11 I can't even touch anything. I have the stock evo x fmic and ic pipes.

How about larger cooling fan?

07outty

iTrader: (5)

larger fan may help some with engine compartment heat ...but................

.............you would need to figure out how to make the fan run

off of a signal NOT related to the engine coolant temperature.

tre

iTrader: (1)

fan has nothing to do with what heat a engine runs. thats the thermostats job.

with that said though a thermostat ain't worth much without a good working fan either

07outty

iTrader: (5)

........but the fan is cycled on and off ...

...from a signal produced by a temperature sensor.....then through the ecu...

....which decides to open or close a switch , sending power to the fan.

yes......the thermostat "contrlos"the temperature ......

.........of the coolant running through the cooling system.

jkennedy293

The thermostat controls the temperature of the engine. The fan controls the temperature of the coolant.

DatRAzn

iTrader: (2)

I, too, noticed how hot the 4B11 gets; especially during summer weather. I don't think we need to worry about the engine bay being too hot while in motion. Coming to a stop and having the engine sitting in the ambient heat after a drive is what concerns me.

After a drive in 80~85F+ the fan will kick on after I shut the motor down and I usually pop open the hood to get more ventilation going. Buying a huge window fan and setting it blowing in to the engine bay would help I think, .

I believe on the EVO 8/9 the upper pipe is the cold pipe, whereas on the X/RA our upper pipes are the hotpipes. I think that would explain the upper pipe being much hotter than on your 8? Although, I'm sure ambient engine bay temps don't help it any bit either.

stfuad

you could make and install cooling blocks with quick connectors... not sure how that would work but it would... somehow.

Why not just thermal wrap/ceramic coat the hot parts in the engine bay?

suprPHREAK

The aluminum block 4B11 would also radiate more heat than the cast iron 4G63...

laksman91

iTrader: (4)

i wouldn't reccommend random things, personally i would want my intercooler pipes to radiate heat so that "cooler" air goes through the intercooler

NFSLancerRA

iTrader: (8)

LOL @ ceramic wrapping Aluminum parts.

Geereg

I don't really understand the concern here. The car was obviously designed to work in a certain way. Wrapping things, extra fans, and wiring fans to stay on seems a little silly to me. The most I would do is pop the hood after a 20 min track session to let it cool down (if I tracked it).

All in my opinion of course.

403evo

iTrader: (2)

i know you can buy turbo wraps, or covers. basically keeps all the heat in your turbo and blows it out your exhaust. saw them the other day, package even said it added horsepower lmao, but i highly doubt it does anything performance.

Bom's Evo

iTrader: (14)

I'm looking into the heat issue as a long term effect 5 years later. I know as I increase power I will increase heat also decreasing the longevity and reliability of various parts of the car. If I can limit it now it should help the powertrain last longer and stronger.

tre

iTrader: (1)

i just wouldn't recommend messing with the actually engine temp with custom tuning.

I don't know about these cars. but my previous one would use engine temps to adjust fuel trims.

one thing i did on my previous car since i didn't drive it in the rain anyways was remove the weather stripping at the back of the hood to allow it to vent better.

NFSLancerRA

iTrader: (8)

Then buy a new transmission cooler. There is nothing wrong with the heat coming from your engine bay. I'm sure that your engine is within normal operating temperatures and will be fine.