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Old 05-30-2015, 03:17 AM
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Heat Problems

Hey guys, I'm currently running 6 psi off a small turbo and I'm really concerned with underhood heat. The log manifold gets Bella hot really fast, and the turbo itself just emenates heat like a freaking red dwarf.

I have heat wrap and a turbo blanket coming. What are my other options and what have you guys done to try to keep everything cooler down there?

I was thinking about maybe adding some extra radiator fans to the front side of the radiator, and since I already have a hood scoop doing a small 5" computer fan and wiring it to ignition, to constantly pull cold ATM air and push directly towards the turbo. I don't want to melt the hood scoop or damage my vinyl wrap on the hood.
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Old 05-30-2015, 08:23 AM
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Re: Heat Problems

Is it normal for it to get that hot?
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Old 05-30-2015, 12:42 PM
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Re: Heat Problems

Yeah its normal. Its spinning through exhaust gases right out of the engine so yeah.
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Old 05-30-2015, 02:58 PM
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Re: Heat Problems

Figured it gets hot based on that and all those rpms, but wasn't sure about if all that external heat was normal.

When I get back to work I'll investigate how all those giant turbo'd tonka toys (front end loaders, cranes and backhoes etc) keep from melting everything around the turbos... modern earth moving equipment in itself is very low powered these days regarding the standard operation but when under load turbos make it possible for that little ole ant to move that giant rubber tree plant.

How would you get around the 125 ac computer fan working in a 12 volt dc system?
Maybe you can get your geek on and study up how those characters go about applying some sort of silver product that allows those mega fast processors disipate heat more efficiently. As in is that a viable idea?
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Originally Posted by ogsmakdade View Post
welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
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Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
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Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead

Last edited by bykfixer; 05-30-2015 at 03:02 PM.
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Old 05-31-2015, 11:13 PM
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Re: Heat Problems

http://www.diesel.asia/pdf/Tech.%20T...yths_Facts.pdf

Water and oil cooled for diesels




If u add an oil cooler, that would be tha sh\it.. but an extra fan would be good..


i wonder time..........
- Would adding an extra cooler bump up tha overall volume of oil?
- extra strain on pump/sump
- varying pressures on outlet and return pressure due to added volume to be pushed around
- leading to more cavitation?

if that turbo is heating up like a mofo / and is oil cooled, keep an extra eye on your oil viscosity (dont want it breaking down too soon)
but if your gauges are showing everything is ok then its just superficial i guess.

Wonder if turning a fans polarity around could work to suck air away from turbo, or if that would just heat the sh|t out of the rad, just thinking out loud.. Scary !

maybe even a good sized coolerr of a wrecked pick up or something, if that could work...?
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Last edited by static420; 05-31-2015 at 11:26 PM.
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Old 06-01-2015, 04:44 AM
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Re: Heat Problems

Yeah, I'm starting to think along the same lines. Most modern turbo's for cars are oil AND water cooled, and ball bearing turbo's are better for cooling too I believe. This all helps to keep the system cooler. I would have thought a decent blanket would have helped a lot, but I've also seen aftermarket heat shields available. What sort of condition is your cooling system in? Do you have an aluminium radiator or is it still stock? Do you have an aftermarket water temp gauge (the stock one is rubbish) and/or an oil temp gauge? Any chance you can get a thermometer under the hood (a meat thermometer would do) to see just exactly what you're dealing with? The insulation on wiring is usually rated to 75C (170F) so it'll have to be pretty darn hot before you start damaging that, the paint will probably start peeling off the inside of your hood before this point. An oil cooler is definitely a good idea but be careful not to oversize it or you could increase the oil pressure too much.

I wouldn't have thought a 12v computer fan would make that much of a difference to under hood temps, kinda like peeing on a forest fire. Have you considered spacing the back of the hood up? It's all about cross-flow ventilation, you already have a massive opening at the front of the engine bay but stock the air has nowhere to go but down and under the car.

Just thinking out loud too, but is it possible the turbo is too small? i.e. is it creating too much back pressure and thus creating the extra heat?
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Old 06-01-2015, 11:07 AM
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Re: Heat Problems

Common heat-combating options of turbo'd cars;

-Ceramic/thermal-coated manifold/turbine housing/downpipe
-heat wrapping manifold/downpipe
-turbo blanket turbine
-heat shield turbine
-gold heat reflective tape
-mad-tyte JDM hood tilt


Adding more rad fans to make a combo pusher/puller setup aint a bad idea, but if you need to do this after doing all the above options and STILL have ridiculously high underhood temps, something's not right.
Speaking of rad fans, what's your radiator/fan setup? Are the fans shrouded? Pulling enough cfm's?

Hell, what's your ENTIRE setup? Turbo/engine/FMIC.....
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But you need that scoop on the hood. Is it true that they're big enough to fit your lunch box and all your camera gear in it?
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Old 06-01-2015, 01:35 PM
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Re: Heat Problems

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Originally Posted by Garurumon View Post
I already have a hood scoop doing a small 5" computer fan and wiring it to ignition, to constantly pull cold ATM air and push directly towards the turbo.
Those computer fans have pretty low CFM... Even the high CFM ones... The air flow under the hood has more force than one of those. I would look into a small radiator type fan that has some major CFM's... Like a motorcycle.ATV sized one. I bought a couple on Amazon a while back to replace my hamster wheel setup on my rear A/C unit in my Suburban. I got them for a decent price. I can look up the size and P/N if you need.

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Originally Posted by bykfixer View Post
How would you get around the 125 ac computer fan working in a 12 volt dc system?
Mike, Most fans for computers run off 12VDC, aside from the one inside the Power Supply, those are usually 110/220VAC units. ;wink:

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Originally Posted by tassievteclude View Post
I wouldn't have thought a 12v computer fan would make that much of a difference to under hood temps
Yeah, even the high end computer fans wouldn't help.
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Old 06-01-2015, 01:38 PM
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Re: Heat Problems

Quote:
Originally Posted by tassievteclude View Post
...kinda like peeing on a forest fire...
THAT is a very bad idea too... Especially if asparagus was recently eaten...
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Old 06-01-2015, 02:06 PM
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Re: Heat Problems

Quote:
Originally Posted by twokexlv6coupe View Post
Common heat-combating options of turbo'd cars;

-Ceramic/thermal-coated manifold/turbine housing/downpipe
-heat wrapping manifold/downpipe
-turbo blanket turbine
-heat shield turbine
-gold heat reflective tape
-mad-tyte JDM hood tilt


Adding more rad fans to make a combo pusher/puller setup aint a bad idea, but if you need to do this after doing all the above options and STILL have ridiculously high underhood temps, something's not right.
Speaking of rad fans, what's your radiator/fan setup? Are the fans shrouded? Pulling enough cfm's?

Hell, what's your ENTIRE setup? Turbo/engine/FMIC.....
There is a difference in your typical gold and silver tapes, vs the higher end that is onlh sold by the roll unless someone is willing to cut.

And the hood tilt doesn't do anythig worth the time on preludes, I tested that one with intake and coolant temp readings before/after.

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