Engine bay hot, but NOT over heating

[articzap]

So I was driving around yesterday. When we got back I popped the hood. A wave of heat comes flying out from under the sheet metal. Temperature gauge never goes past middle to slightly below the middle. I have a Mishimoto radiator and electric fan which is always on. The amount of heat that comes out from under my engine bay is quite astounding.

Is it normal to have a lot of heat come out from under the engine like that? Like I said its not overheating.

[MeanGreenS13]

i use to run everything under my hood unwrapped, now even my intercooler pipes are going to be insulated. It cuts down on heat and heatsoaking.

[Liquid_Neon]

well turbos get pretty hot.

Combustion creates a buncha heat, doncha know

[articzap]

well turbos get pretty hot.

Combustion creates a buncha heat, doncha know

I'm not a car idiot!!!! My buddy has a rotated 35r STi and his engine bay doesn't throw near the heat that mine does. The underhood heat is greater then any other car I've been around.

[Liquid_Neon]

I'm not a car idiot!!!! My buddy has a rotated 35r STi and his engine bay doesn't throw near the heat that mine does. The underhood heat is greater then any other car I've been around.

never assumed you were an idiot.Does his sti have any of the heat shielding in place? does yours? I know after I turboed the pulsar the hood temps went up like whoa.

Whats the turbo and manifold your running? what A/F you get usually? just something to mull around the ol' noggin.

[RS12Turbo]

I'm betting on the electric fan running non stop....plus the fact that a fan shroud probably isn't being used either.....both of those will cause heat to soar under the hood. Get a fan shroud(if one isn't being used) and get a fan controller so the fan isn't running all of the time....it doesn't need to be on while the car is moving

[articzap]

I'm betting on the electric fan running non stop....plus the fact that a fan shroud probably isn't being used either.....both of those will cause heat to soar under the hood. Get a fan shroud(if one isn't being used) and get a fan controller so the fan isn't running all of the time....it doesn't need to be on while the car is moving

The fan is on all the time and I have no shroud. I'll have to work on figuring those things out.

Thanks!!!

[bruinbear714]

So I was driving around yesterday. When we got back I popped the hood. A wave of heat comes flying out from under the sheet metal. Temperature gauge never goes past middle to slightly below the middle. I have a Mishimoto radiator and electric fan which is always on. The amount of heat that comes out from under my engine bay is quite astounding.

Is it normal to have a lot of heat come out from under the engine like that? Like I said its not overheating.

Having fans on all the time is like burning 400 watts while your car is on. If you don't know how much heat that generates, just put your hands next to a light bulb. That's about 40W. Imagine 10 of em under the hood.

Get the DIF variable speed controller to help out the fans and your alternator.

[RS12Turbo]

Damn.......thats kinda spendy.... Here's the one I use......about 6 years now. Had it on my ca-et, and now on my ca-det....works perfect, and cheap.

http://www.centechwire.com/cat...shtml

Pics of it installed on my ca-et.......http://www.cardomain.com/ride/675796/4

[dash]

Hayden/Imperial makes an adjustable fan controller ~$35 at parts store or summit.Sensor inserts in the radiator fins. Fan cuts in only when necessary (u set it).AC compressor wire can trigger 2nd fan relayRelays and fuses inclded & prewired.Works exactly like its supposed to. Done 'em on a few daily driven cars for years

[Rin5]

I'm betting on the electric fan running non stop....plus the fact that a fan shroud probably isn't being used either.....both of those will cause heat to soar under the hood. Get a fan shroud(if one isn't being used) and get a fan controller so the fan isn't running all of the time....it doesn't need to be on while the car is moving

well not necessarily...one time i left my fans on by accident for idk say 1-1.5 hours? and there was no heat generated...well cept at the switch and wires but not the fan itself...the heat wasnt enough to melt the wires but hot enough to melt the plastic clicky mechanism of the cheap 1.97$ walmart switch...and for the fan shroud...i dont have one either but the flow of the fan while at idle is strong enough to blow heat away...normal idle i leave 1 fan on...idle after the turbo has been worked out then i leave 2 fans on

oh umm i think my fan is the stock altima? found it sitting at junkyard near a 240...

but yeah fan shouldnt be left on at all times....i only cut it on when im driving under 45mph or when turbos hot