Fan Flow

[bimeur]

Hi guyz,

I'm looking for the flow about OEM fan on a ca18det engine.

I want to go to an electric one (twin or single fan) and i need this information.

THX

[sjbsuperman1425]

I've been running a single 14" Fan from CXRacing for the past two years with no cooling problems. In my opinion it does pull a lot of amps though. I was looking at this one awhile ago but decided to wait on it since I blew my turbo last fall.

http://www.summitracing.com/parts/PRO-67014/

[blownhemi]

I've been digging into this quite a lot in the past weeks. I remember to have read somewhere, that it's 4200cfm @ 3000rpm, but take that with a grain of salt. According to the poster, it's a nissan spec, but no actual source was referenced or linked.

On the more practical side, what I've found about cooling and fans boils down to this:
Basically, road racers almost exclusively say, stick with the stock fan and SHROUD (very important!), unless you are seriously challenged for room under the hood. And even if you do switch to electric fans, add some ducting, because that's where it's all at. You can have all the advertised e-fan cfm of the world, if the airflow is not directed nicely into AND out of the rad/fans, even sky-high fan cfm's won't mean a thing.

Unless you won't use the car for anything, that has demands towards cooling, like drifting, or timeattack/hotlapping... in that case, attaching them to the radiator with zipties probably does the trick, like most people seem to do it.

[bimeur]

I'm looking to put one or two (if necessary) instead of the viscous OEM.

But if go to a single one,I'll keep the fan shroud.

I logged water temperature with and w/o the shroud,I saw a difference of 10 to 20°C (depends of the conditions of course) so I know the importance of the shroud

[r34 gtr]

I run a single 14" 2950CFM e-fan with the stock fan shroud. I have never once had a cooling problem, even driving the heck out of it in Alabama summers. Just keep the shroud on there for the love of all that is good and decent.

[sjbsuperman1425]

I run a single 14" 2950CFM e-fan with the stock fan shroud. I have never once had a cooling problem, even driving the heck out of it in Alabama summers. Just keep the shroud on there for the love of all that is good and decent.

I dont run a should and I get plenty enough air flow with my cooling..other than when I was low or was blowing coolant lines all last summer haha