Overheating

veecee wrote:

hello!!!

now it all makes perfect sense! 🙄

Didn't think of the intercooler causing a problem until now... Well it had crossed my mind but so many people do this mod and I haven't read of anyone having over heating problems because of it.

plus you live in one of the hottest cities in the country?

veecee wrote:

plus you live in one of the hottest cities in the country?

Yeah, that doesn't help. Also, thats the reason that I ned my aircon working... 😉

@window - right on, I was just about to post the same thing. That's why I said the shroud is all-encompassing, as in, it covers the whole radiator, so that the air flow is through the entire surface area of the radiator, whereas electric fans flush against the radiator only cools that little spot they are covering and with strong enough wind and turbulence a lot of hot air will actually circulate in the engine bay. The shroud prevents all this and directs the hot air nicely away from the radiator. As I said, don't under estimate the importance of the shroud.

Toby wrote:

and with strong enough wind and turbulence a lot of hot air will actually circulate in the engine bay. The shroud prevents all this and directs the hot air nicely away from the radiator.

the shroud also directs all that hot air straight onto engine, which is in the engine bay.

a lot of hot air circulates in the engine bay regardless of wind and turbulence.

i agree that a shroud is the best option, but its not an option available in south africa if you are looking to go with electric fans.

so in order to help prevent overheating problems you need to mount the electric fans in the most effective manner possible. flush against the radiator!

Ok, I bought a new fan and fitted it this afternoon. (it turned out to be a fan that blows instead of sucks (:roll: that sounds a bit odd) but that isn't my biggest problem)

When I took it for a test drive its goes ok until it heats up. Once its hot I start getting a bad misfire if I try rev above 4800 rpm 🙁

There is a little bit of white smoke coming out of the exhaust and a small ring of white stuff appears in the radiator if I rev the engine... so I'm pretty sure my head gasket is bad... 🙁 Would this cause my sx to misfire above 4800rpm or could that be summing else?

I'l do a compression test 2moro and see what it shows.

Also, I got a terrible grating sounds when I tried to start my car for the test drive the first few times... it almost sounds like its coming from the throttle body... but it may just be reverberating from the head. What could the possible culprits be? cam bearings? It went away completely after about the 3rd start.

Also think one of the big end bearings is going... *sigh* seems a rebuild may be in order. I really hope I can still make the Breakfast run to Ballito...

hey mayoman, unless the fan has electronic goodies in it, you can just swap the wires, then the blower becomes a sucker

widowmaker wrote:

hey mayoman, unless the fan has electronic goodies in it, you can just swap the wires, then the blower becomes a sucker

Thanks, widow. I though that may be the case, but decided to do some research first before I try. Didn't want to blow summing. Thanks, for clearing that up.

cant see a real reason why they'd put electronic stuff in there, so i think yer safe to tune them wires - but maybe wait until the grownups arrive on the forum to give their experteeism

veecee wrote:

a lot of hot air circulates in the engine bay

and on the forum 😂

Well the head gasket and engine problems are :!: serious. I learned with my na ca18de. picked up a slight cooling problem and i was on a long drive. this was my first experience of "heat soak" 😕

This happens when the motor starts running hot, the engine bay too begins to heat up and with that the air temp starts to go up. what happens next is the fuel does not atomize properly and leans the mixture out. when this happens your motor starts to run hotter and the problem compounds!

This left me with a costly rebuild that i may have avoided by just pulling over for 15min or so. Given my baby time to recover and then solved the "minor" issue promptly.

This is also why i dont believe in cone filters.( they suck hot air unless set up in a cold "housing")

Plus this may only count for na engines, the turbo version may be able to handle more heat.

i dont quote this as the absolute truth. Just hope it can help others not to pay the same price.

very true!

if only i could make us some fitting that pulls cold air from the left hand little grill in the bumper instead... oh wait i have...

im so glad you posted last. people dont read threads when they see i've posted last... oh wait... now ive just posted this... SOMEBODY SAY SOMETHING!!!

anyhoo, i had a point to start typing... some people here lift the back end of the bonnet a little so the HOT AIR goes out there.

widowmaker wrote:

some people here lift the back end of the bonnet a little so the HOT AIR goes out there.

Since we're all picking on ChemCool 😀

So they lift the bonnet, which lets out some HOT air. They turn on the fan and the HOT air goes into the cabin from the intake vents under the windscreen. Jislaak, now it's getting hot in the cabin, so they turn on the aircon to cool down the HOT air that once originated from the engine bay. This makes the aircon hot and bothered, so more heat needs to get extracted from the aircon via the aircon radiator. Wow, what do you know, the heat somehow made it's way back into the engine bay 😂

Hehe just kidding. Obviously not *all* the heat goes into the cabin 😂

a hot cabin doth not a friendly driver maketh 😂 ole kazakstani say

oh oh oh i almost forgot!
ole plick saying : chrome mags reflect the sun's hot rays into the black wheel wells, adding heat to the bay!

ooooh im in a good mood today! (and im late)

But that doesnt look cool man... (the bonnet lift thingy)

anyway - its fine to swap polarity, but i think you also have to turn the blade around too. cant remember exactly, but i did either one or both of those things to get my fan to suck.

i hope you didnt use hte fan as a blower type on the wrong side of your radiator? cos that would've worsened the situation.

also the white stuff in your water points straight at a blown headgasket. sorry broo.

the noise coming from the top of your engine could've been the ballbearing in the Pressure Control Valve. its at the back of the plenum and points towards the middle of the engine bay, and has a breather hose connected to it. although this makes more of a fast loud tapping sound, more than a grating sound.

grating sounds on startup is usually the starter motor teeth that dont engage properly with the flywheel.

maybe the starter gear is rusted since you have water in the sump where the oil should be and oil in the radiator where the water should be 😂 and your in durban

you now have a well lubed water pump though!

antifreeze contains water-based lubricating agents!!!

you should know about that widow.

aaaaarrrrggg go away!
(and your moms quite nice)

you watch too much TV dude!

go fix your car rather!

I had a traffic experiance yesterday where I saw coolant tempretures as high as 105 degrees, this was purely because of heat soak.

Does anyone know what electric fans fit the radiator nicely, I hate the electric fan look but I need it now. Also does anyone know how I can suck air in the left hand side of the engine bay, I think I need some cool air for my cone filter.