How much of a HP gain will I get going from a clutch fan (OE) to an electric fan?

 

On our 12A's, maybe 3 or 4 HP....just a guess, Car Craft ran an article on a souped up boinger that showed a 25 HP increase with an electric fan and 10 HP increase with a mounted flex-fan...do the search engine for "Car Craft" and you'll find the thread....

 

hehehee, what about an electric water pump

 

If you've got one rated for continuous street duty like the Meziere (use the search button LZA), that should be good for 3 or 4, I'd guess...

 

Three to four horsepower - that's it? Why bother then.

 

It cleans up the engine bay and makes things look nicer, pluss if you get a pusher fan (mounted on the outside of the radiator ((meaning the side open to air and not in the engine bay)) you can cool the engine alot more efficiently... and we all know that a cool rotary engine is a nice thing to have.

cheers'

 

I did say I was guessing. I'd love to a dyno run, but the Meziere is a $280 piece. If I can bring down some other bills, I might go for it and run a thread later on the gains with just that mod alone. I just got a scoop from a buddy that we can get in 3 dyno pulls for $40, so I am going to be visiting there quite often...

 

You can also run the electric water pump with the engine off to cool it between track runs or should you have a coolant leak in the middle of nowhere and must get somewhere.

 

Ok, I think I'll just stay with the stock fan.

 

What if your clutch is frosen and your fan spins at engine speed. What kind of power could you expect.
10+?

 

Probably about that. Your fan clutch is stuck too??? Sounds like a friggin jet engine doesn't it? I can't wait till I get an electric fan for my rex. Extra HP, more contol, better sound, and a cleaner engine compartment. Worthwhile investment if you ask me.

 

Hey 85rx7gs: in a car that has maybe 100 hp you'd be giving a 4% increase in power by adding a e-fan. That's pretty good in my book.

 

My fan spins so fast at cruising (3-4000 depending on mph) that the corners of the hood raise up to vent the air. Plus its loud as hell and its killing horsepower and engine response.