VR4 Radiator size..

[naughtika]

hey fellas.. does anyone know if what size radiators we have?

I'm after overall size and core size..

and are there any slimline fans out there that can directly fit into ours without any dramas?

some might ask why.. just got some impractical ideas at the moment..

 

[VR4Rocket]

With who's radiator........he he he

 

[naughtika]

nah, just seeing other options.. i still got yours at the frontyard..

 

[Dr_Josh001]

Hehe... you wanna put TD04L's on don't ya!!

 

[bradc]

the fans are quite thick, you can change to much slimmer fans if you want.

 

[SiliconAngel]

I'd want to see airflow characteristics before I'd do that - the deeper blades give greater airflow at a given RPM - you CAN move the same amount of air with a more efficient, slimmer design but it would have to be well engineered, and what they say on the box rarely bears out in the real world.

Having said that, you'd need to determine what the cooling coefficient was for your given application to evaluate suitability - that is, for the radiator (or aircon heat exchanger) you're using (or intend to use) what temperature drop is possible using the different fans? You may find the higher CFM of one fan is unnecessary as it has no real-world impact on cooling effectiveness, or you may find one fan simply can't move enough air to effectively cool the radiator at all.

Find people who have tested this thoroughly, or do some tests yourself. Don't just strap a new fan on expecting it to work unless you have evidence to show that it does.

 

[Guest]

well if they flow the same or close to id be interested in these aswell.

 

[naughtika]

Hehe... you wanna put TD04L's on don't ya!!

nah.. 2 TD04's are for sissies.. j/k

I wanna get a thicker radiator, but if i raplace it with a thicker one I know the fans will hit the front turbo, oil filter and other stuff..

I'd want to see airflow characteristics before I'd do that - the deeper blades give greater airflow at a given RPM - you CAN move the same amount of air with a more efficient, slimmer design but it would have to be well engineered, and what they say on the box rarely bears out in the real world.

Having said that, you'd need to determine what the cooling coefficient was for your given application to evaluate suitability - that is, for the radiator (or aircon heat exchanger) you're using (or intend to use) what temperature drop is possible using the different fans? You may find the higher CFM of one fan is unnecessary as it has no real-world impact on cooling effectiveness, or you may find one fan simply can't move enough air to effectively cool the radiator at all.

Find people who have tested this thoroughly, or do some tests yourself. Don't just strap a new fan on expecting it to work unless you have evidence to show that it does.

in my opinion if i get a bigger radiator (twice the thickness of the core) and replace the fan with a push type instead of a pull type.. as well as the fan pushing out about x1.5 more cfm than the factory one.. it should be efficient and nothing overkill..

what do you think?! it's not a thorough investigation, just a 'quick look' at how things are..

 

[SiliconAngel]

Chris 'quick looks' are fine for determining if an idea is worth pursuing. But remember this isn't about the few hundred dollars the upgrade will cost - its about the 'health' of your engine.

If you can't find documentation showing results of the particular products you're interested in, see if a specialist at somewhere like ARE cooling can give you some pointers. Failing that, if you're really keen on this idea and don't mind spending the cash, before you stick them in your car you can run some 'offline tests' - pump some pre-heated coolant into the radiator at a known temperature (say 95°C) and controlled flow rate and measure the temperature drop on the other side. Perform the same test for both stock and aftermarket radiators, and try the same thing for different fan configurations. If you get better cooling out of the aftermarket one in these tests then I suggest it will keep your engine cooler in the vehicle, too (just ensure ambient temperature and humidity are very similar when performing your tests or your results will be inaccurate and highly misleading).

I suggest you put the fan in 'pull' configuration though - remember when the car is moving fast it will get substantially better airflow than the fan can deliver, and being behind the radiator it won't disrupt much needed airflow

 

[Dr_Josh001]

Another thing is Aluminium has better efficiency at cooling and I believe there are aftermarket Al radiators that drop straight in. Might be worth checking out.

& if you're not going TD04's then... you must be going TD05's!!

 

[naughtika]

how about GT... something.. not anytime soon.. just acquiring informations.. so when the day comes.. i'm ready..

 

[Guest]

for sure its a GT35/40, christian if you do that im coming to QLD to have a ride in your car..

 

[naughtika]

that turbo upgrade will only be in my dreams unless my financer says ok..