me too although mines on a 56 mm radiator i also have no problems with air con on and hard driving it dosnt even reach 90 deg in hot weather , it usually sits around the 80 deg mark as cool as a cucumber. now that the amb temp is cooler such as last night i noticed the thermo hardly even came on at all. .
I tried looking for one of those Seemed rather hard to get, even went to an alternator place to see if they could source a new one and the pricing and even they had issues. They are going to look at doing up a custom one when I bring in my old alternator to size it up, either go custom or find another one from another car which is more powerful and will fit.
I had a thermo When the car was running without any issues. Well I lie I did have issues but it was my own fault. the fan blades needed to be swapped around on the davies craig fan to suit pulling instead of pushing. after that it never had an issue. I was running higher boost and a PWR 40mm twin pass with no shroud. Worked a treat, in the end it ran cooler than the stock rad with thermo fan, even on hot days with aircon (god I love my aircon).
Dunno why my car is so hot then It really needs a lot of cooling, Jspec 89 TT. I run a tuned SAFC so maybe a bit leaner and hotter than most. I generally found running the AC was not possible on warm days. It ran at 90C cruising at 100kmph without aircon from parramatta to penrith (flat highway) 30C day thats when I said "this setup aint working". My trans cooler was behind the radiator. You guys realize the actual coolant temp is usually about 10C higher than your gauges read?
Z air path I think the tight engine bay behind the fan poses a problem, once thru the fan there is nowhere for the air to go, just hits against the engine and goes turbulent. I reckon the radiator isn't the only thing that benefits from more cooling air flow, all those plastic connectors, rubbers, alternator, turbos all could do with strong surface air flow.
If you're overheating on the highway you have other issues. The engine fan serves practically no purpose when at cruising speeds.
i do believe that is incorrect. I used to think that way but I ran tests by turning off the thermo fan etc whilst cruising and the car did invariably get hotter. Also the clutch fan runs the car cooler when at highway speeds than the thermo fan did (on or off). So it must be doing something. Whilst the extra wind definetly does help. The fan still served a purpose at cruising speeds.
I said practically no purpose, the air being slammed into the front of the car is doing 90% of the cooling. I've driven 300km in my Z with no engine fan at all and it didn't over heat, sure it was a Z31 but the same principle still applies. The radiator is still in an awkward position and I have a big mofo front mount intercooler blocking it almost completely. Infact I've driven a Z that had cooling issues when in stop and go traffic, and when I hit the highway you could watch the temp gauge go back down to normal. If you overheat at highway speeds, something else is up and has nothing to do with the fan trust me.
I really cant be bothered getting into this, it's simple thermodynamics. Here's a book about it, read "cooling fans" http://books.google.com.au/books?id...URlQRtp&sig=U7PwV2L7fRfwil3EgwboV_a1hKE&hl=en The fan clutch on a stock engine fan wont even engage fully at highway speeds on a car cooling adequately, it freewheels or more acurately the clutch "slips"
No one was saying that clutch fan is going to need to fully engage on the highway. Even when slipping it still helps by sucking some air through the radiator rather than under the car etc. We all know that the fans main job is to cool the car at low speeds. However it is clear that even at highway speeds the fan still does need to operate to keep the car within a preset temperature (sure it mightnt overheat without a fan - but its unlikely to be as cool as with a fan!). Ever wonder why lots of cars overheat on long highway trips? - its not just when they blow a radiator hose - sometimes their fans fail too. Even falcons and commodores with elec fans still operate when at high speeds, although not as high as stationary of course; just the same as a Z. I don't know about you but i think most people would consider this a PRACTICAL purpose. I'm not writing this to argue. Its just so other readers will know that radiator fans are not just for start stop and slow driving.
Oh i'm sorry.... next time i'll just bow and say you know it all about fans. Actually come to think of it...... you seem to know everything. Because you feel the need to be right in any topic you are involved in. Doesn't even matter what the topic is about. I'm sure there are many on the forum that would agree. There is a 200% chance that you would have done something better in your z31 than anyone in a z32. Never once have I seen that you've been wrong. Well its physically impossible because you could always come up with some "evidence" you found on the net or google. Geez you must be a legend. :rolleyes2: :vomit:
What the hell are you on about? Right is right, wrong is wrong. It's not a matter of opinion. So what if I provide evidence from an Automotive Technology book confirming exactly what I said because someone like you doesn't believe in science. It's still right, you should of just said nothing instead.
Well you've just proved my statement about you always being right. Every car manufacturer in the world must just be wrong with keeping those fan things on when the car is moving. Cheers
This is so stupid. Electric fans wired into a correctly adjusted thermostat will NOT run at highway speeds if the cars cooling system is well maintained. You know why? Because the ram air is sufficient to keep temps low enough that the thermo switch isn't even triggered. It's the same reason that fan clutches slip when below a certain temperature, because it's not needed at cruising speeds. If car manufacturers went by your theory, the fan would just spin constantly and there would be no need for thermostats or fan clutches in the first place. *yawn*
I don't particularily want to join in this bitch slapping contest but, meh, works boring. Either it's due to heavy traffic and low airflow on hot days with aircon, or the car is overloaded due to going on holidays with the extended family. 300zxtt is correct in saying if at highway speeds and cruising, if you overheat, then there is something else wrong with the cooling system that contributed to the overheat. Highway speeds push enough air through an open radiator to satisfy the cooling needs, except for a frontmount, it will slow it all down significantly. You still want a fan in there though My thermo swtiches itself off on the highway due to the temp dropping below 80 degrees, but then I have a cooling system in near perfect condition and no frontmount. 300zxtt is trying to make the point that the fan contributes very little at speeds above 80km/h, while the motor is cruising, he never said it served no function. F(*king keyboard warriors...now go back to class.
with elec hot without ok Just stating my logic here; With an electric fan, with aircon, << 100C I aborted that test. With stock clutch fan, with aircon, 88 to 95C. Its a huge difference, it kinda annoys me how others are like yeah sweet I use an electric fan and sweet when on my car theres no effing way it works, regardless of this-and-that like ram air, fan setup, ambient, etc. I could drive with the electric fan, but only lightly cruise and no air-con. Only thing i can think of is my cars an auto so adds a trans cooler into the equation. Ever notice how much difference lifting the bonnet makes? Its why I think theres nowhere good for the hot air to escape. when my car is stationary I can feel it rebreathes its own hot air, and the ambient temp sensor reads high like 50C.
