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Author Topic:   Electric fan, alternator, electric water pump ???'s
HRT187
Member
posted November 02, 2002 01:05 AM
OK, I've been reading this thread on electric fans and I like what I hear. Especially since I run a 331 and any free HP is good.

So I want to run an electric fan, I've also read that I want to pull one from a junkyard FWD GM car. Cool.

I've never run an alternator, so I need to rig one. What is the preferred route to take on this? I see the "racing alternators" and big money is all I see. Should I find a small one in a junkyard and take it to the local shop for the 1-wire conversion? It's not like I need a ton of amperage here. Also what is the best mounting method? Power steering is the only other accessory that I have.

Now, I've also heard from my NASCAR mod buddies that the serpentine belts have less drag to the tune of 5hp at 7400rpm. But I can't think of how I could route the belt without a tensioner. which leads to my next question...

Has anyone ran an electric water pump? Are they reliable? I'm thinking of swapping to an electric water pump, alternator, electric fan setup. Then the only belt driven accessories would be the alternator and the power steering.

Also, I think I already know the answer to this, but... has anyone noticed a power increase when installing an alternator? I know I can feel a dead battery's effect on power, so I assume the extra 2v from the alternator would gain a few ponies from the MSD.

thanks in advance fellas. Already learned a lot from you guys and I appreciate it.



Racer14K
Member
posted November 02, 2002 12:54 PM
Everything that I have read on electric waterpumps is drag racing only. I would think the electric waterpump would require alot of amperage to flow the coolent. Plus, if you are not running an alternator thats more voltage drain on the battery.
Alternator, I have and always will use one. I have been using the same battery since 1996, optima red top, and have never needed to charge it, except when the car would not start and we drained the battery.
Electric fan, I have never used one so I can't comment on that.

Alternator:
Carquest #71-1127-1W12N $92.06
Summit #PWM-8003 $68.95 plus shipping
Speedway #910-68100 $89.95 plus shipping

Bracket:
Speedway #916-60791 $29.95


HRT187
Member
posted November 02, 2002 04:29 PM
Thanks Racer14k,

I had always shared your opinions on electric water pumps, but in the catalogs there is one that says it meets the demands of oval racing, off road racing, and pulling... I dunno if that's supposed to mean flow wise or durability wise. They also say that they draw between 6-9 amps depending on the model. I like the idea of being able to circulate water and air without the car running though.

I plan on running an alternator for the first time next year.


66jj
Member
posted November 02, 2002 09:01 PM
I HAVE ALLWAYS RUN A STOCK GM ALTERNATOR, JUST RUN THE BIG WIRE TO THE BATTERY AND TIE THE OTHER 2 WIRES THAT HAVE THE PLUG, TOGETHER AND RUN THEM TO A TOGGLE SO THE YCAN BE TURNED ON AND OFF, THESE ARE THE ARMATURE ACTUATORS.

AS FAR AS POWER, IVE ALLWAYS RAN A 30% REDUCTION, AND A HIGH FLOW STAT, BUT THIS YEAR I WENT TO A ALUM WP NAD IT MESSED ME ALL UP, SO I HAD TO GO TO NO REDUCTION, AT A IDLE WHEN I TURN ON THE ALTERNATOR IT DROPS SOME RPM,

I ALSO ALLWAYS RUN A MOROSO LARGE ALT PULLEY SUMMIT SELLS THEM FOR 22 BUCKS.

AS FAR AS BRACKETS, I MODIFY MY OWN AND ALLWAYS RUN A LONG WP, SO I CAN USE STOCK BRACKESTS ALL THE WAY AROUND. ALL I DO IS BEEF UP THE LOWER BRACKET SO I DONT NEED THE BOLT IN THE HEAD...

I HAVE TIMED MY CAR, WITH ALT ON AND OFF AND LOST NO TIME, I THINK MOST OF US HAVE MORE HP THAN WE NEED ANYWAYS......

I AM THE ONE WHO POSTED ABOUT THE FWD FANS, THEY ARE 6 BUCKS HERE AND THE ONLY WAY TO GO!!

ELECT WATER PUMPS ARENT FOR ME, I STILL NEED TO RUN ALT AND PWR STEERING. AND IM A WORRY WART, I RUN A 10" ELECT FAN ON FRONT FOR A BACK UP IF THE PRIMARY DIES, AND ITS HAPPENED RIGHT ON THE WAY OUT TO A HEAT RACE, SO I USED IT INSTEAD AND WAS ABLE TO CHANGE PRIMARY FAN BEFORE MAIN, ALLWAYS HAVE A SPARE READY TO GO IN, THEY DO DIE AND RUN A FUSE IN LINE RIGHT AT THE FAN, I USE A 20-25...

old racer
Member
posted November 02, 2002 10:33 PM
My car is light anyhow and I have a large chunk of lead that can move back if I need the %

I don't think the electric fan is much heavier than the steel fan that is on the water pump. I figure the less mass dragging on my pulleys the better. Or at least adding the alternator and losing the paddle fan will offset.

66jj
Member
posted November 03, 2002 10:14 AM
stock gm alt with all the brackets weighs 13.2 lbs, thats about the same as the battery charger and ext cord, and lighter than the generator id need without a alt...


HRT187
Member
posted November 03, 2002 03:03 PM
Fergit stock. I'll go with a mini job from Denso or something.


Pickel
Member
posted November 04, 2002 08:55 AM
I run a street stock with a 355 11 to 1 ..with a alt and electric fans....alt is on the rear end and it stock ...I was thinking a electric water pump but have not had the chance to try it yet ..


go4win
Member
posted November 10, 2002 01:49 AM
I've made both my alt. brackets for my 10 bolt and my 9 inch. I think speedway sells a bracket or it might be Afco for a power steerring pump that will work for an alt. bracket. If you like I will send you pics of mine and they work quite well. They also sell a yoke with a pulley on it just for that but I made mine.


mike10az
Member
posted November 12, 2002 06:02 PM
pickel i need your email address the one on your profile isn't working or something