Have a performance Toyo rad. and was thinking... The standard fan on the engine, dont that create a loss of power in getting it to go round?

 

And is there any reason I couldnt remove it and add a electric fan instead?

Have a performance Toyo rad. and was thinking... The standard fan on the engine, dont that create a loss of power in getting it to go round?

 

And is there any reason I couldnt remove it and add a electric fan instead?

 

i was toying with the idea of a flexi fan like i usda have on my trans-am,the blades a flat and as they gather speed they twist out to pick up more air, allso you can get them in anodised colours for the bling factor

brian93tt

to quote a man who knows, "you're robbing peter to pay paul" you save some BHP at the crank by removing the big heavy mechanical fan but then the load on the alternator will be that much higher to run a stonking great electric fan or two that will be needed to keep evertyhing cool.

The viscous-coupling fan takes power from the engine to turn round.

 

The electric fan takes power from the battery which got it from the alternator which got it from the engine.

 

So they take the same power but the electric one goes through more conversion stages (rotational > generator > electrical > battery > chemical > sulphuric acid / lead > Battery > electrical > motor > rotational) which loses % energy at every step.

 

Tanstaafl!

Try this fella, was only a couple weeks ago

 

http://www.300zx.co.uk/forums/showthread.php?t=43211&referrerid=119

 

smithy

The whole point of an electric fan is that it uses stored energy from the engine when its needed, rather than all the time. You could gain max power gain by fitting a full throttle alternator cut-out relay. This way you get all the extra power when you need it most, then top up the battery when cruising :)

Looks like its a electric fan then.

LOL more money whoo hoo

Looks like its a electric fan then.

LOL more money whoo hoo

 

The cheapest way is to slightly overlap 2 x JDM TT electric fans within the engine bay just behind the rad. This way you can splice into the original wiring harness and have the fans switch on automaticly at the same time as the original front one.Not to sure if the std loom could cope with the extra current so would be a good idea to run in new feeds. You could even run a seperate circuit and have them switch on at a different pre-set tem's as smithy has said.

 

Anything is poss without going into great expense

Anything is poss without going into great expense

 

Ok Dell Boy :rofl: :rofl: :rofl:

Electric fans, not worth the agro for minimal gain and maybe overheating problems as well!

If yer go this route mate, do NOT wire it into the front sub fan, this fans 2 main uses are when the engine detects a fault it cuts in to keep temps down, also it will cut in just before things get too hot, but certainly above normal operating temps. An extra sensor and loom with a pre set temp is both cheap and reliable, leave the front sub fan to do what it's meant to on it's own fella.

smithy

Electric fans, not worth the agro for minimal gain and maybe overheating problems as well!

agreed , the guys in the US have been using electric fans for a while and there have been stories of over heating and then returning to the original viscous set up, you would have to move a massive amount of air in an electric fan to get even close to the amount of air drawn in by the viscous fan

I fitted 2 x bonnet vents as my first mod to car (as close to under wiper areas) as my car had head gaskets gone (before i got it) and the heat that pulls out the vents is alot! (mainly summer) surely this is a good mod to go with electric fan. Only mention as i'm planning to go electric aswell, and i'm no mechanic but no room under bonnet and the air going right over the engine must be good, for cooling and connectors.

It wouldn't be as good as the stock fan that moves 6000 cfm of air!

Bit of duct work, re-route to the intake, thats one mahoosive supercharger :D Enough air flow for a couple of thousand horsepower NIIIICE :D

6,000cfm! electric fan i got is half that 3,100cfm, so i'll have to watch my temps then!

Bit of duct work, re-route to the intake, thats one mahoosive supercharger :D Enough air flow for a couple of thousand horsepower NIIIICE :D

 

 

??? :confused:

okay here's my thoughts on the viscous/electric fan ideas.

Uptil the mid 90's the vast majority of all makes of cars ran a viscous fan with an electric safety fan, years went on and they turned to no viscous fan, just an electric safety fan that cut in when things got too hot and relied on the cars intake of cold air etc to keep things cool and thats how most cars are today.

 

In doing this electric fan upgrade it is the excat same principal...

 

I know of no one here who runs this set up with after market temp gauge to give accurate feedback, though Stuart (smw1)) has the set up, dunno if he's runing yet. I have the set up, though not fully installed.

Numerous tuners worldwide ditch the viscous fan in favour of an electric one which ONLY cuts in when temps are getting up BUT before the safety fan cuts in, it is not designed to flow all the time like a viscous, so the fact it's flow rate is lower is not really relevant.

I've done this very upgrade on 2 previous nissans with kits supplied by SE nissan, all worked well and the new electric fan only came on a few times in a year.

So providing the new electric fan has a temp sensor to activate it at say around 85 and you run an aftermarket temp gauge, YOU will know how it compares to the stock. Ideally someone using an aftermarket temp gauge now is best to give before and after readings. As for the guys in US, like anything anywhere, for every one who says something ain't good, theres more saying it is.

Oh as ever am happy to be corrected by those in the know or have experience :bow:

cheers

smithy

I don't know 100% if an electric setup works or doesn't and I had the same thinking as yourself on this smithy, and particularly since I live in london the leccy fans would work when stationary, which is a large proportion of the cars existence here :headvswal

 

But to be honest the leccy fan will only release a minute amount of bhp, and for considerable expense and effort, combined with the evidence that some USguys have had trouble with cooling afterwards leads me to conclude if it ain't broke don't fix it!

 

It's gonna cost a minimum of 200 notes and probably more to install one, and there are many other mods out there that are worth buying for that dough!

I don't know 100% if an electric setup works or doesn't and I had the same thinking as yourself on this smithy, and particularly since I live in london the leccy fans would work when stationary, which is a large proportion of the cars existence here :headvswal

 

But to be honest the leccy fan will only release a minute amount of bhp, and for considerable expense and effort, combined with the evidence that some USguys have had trouble with cooling afterwards leads me to conclude if it ain't broke don't fix it!

 

It's gonna cost a minimum of 200 notes and probably more to install one, and there are many other mods out there that are worth buying for that dough!

 

 

Some interesting points