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Author Topic:   Electric fan
Pickles
Dirt Maniac

Total posts: 144
posted October 21, 2002 11:32 AM
Just finished going through 17 pages of the engine tech talk and found no referance to using an electric fan. Anybody use one? Any problems? Tips on using one?

Monster
Dirt Maniac

Total posts: 135
posted October 21, 2002 07:29 PM
When we ran on dirt, we never used one, and had our fair share of overheating problems, cause with the constant bumping and grinding, we could not keep a decent shroud on the car,and airflow thru the radiator suffered. Now we run asphalt, with the same motors and radiators, but with a sophisticated shroud and an electric fan that goes on at 200 degrees. No mechanical fan. The only time the fan ever comes on is when the car is shut off in the pits after a hard run on a warm day. IMHO, a dirt car could make one work, but it would be a lot of recurring trouble to deal with the mud plugging and crashing tearing up the shroud, cause with an electric fan, the shroud needs to be in front of the radiator.

Eljojo
Dirt Freak

Total posts: 273
posted October 21, 2002 09:44 PM
Stewart water pumps has an excellent website which will answer many of your cooling system questions.You'll have to do a search for the site, but it's worth it.

Pickel
Dirt Forum Champ
Total posts: 564
posted October 22, 2002 08:39 AM UIN: 25419780
I run electric fans for years... I run a street stock on dirt with a 355 11 to 1 comp 202 heads 64 cc .. 200 to 210 one most nites .

Pickles
Dirt Maniac

Total posts: 144
posted October 22, 2002 11:10 AM
Thanks for the help. I found Stewart at www.stewartcomponents.com Good stuff in Q&A Forum and Tech Support(FAQ) Ans. #10 "Electric fans now out perform mechanical fans in nearly every application"
Also, good info regarding water/distilled water vs water antifreeze mix. Thanks again!

[This message has been edited by Pickles (edited October 22, 2002).]

rico 08
Dirt Freak

Total posts: 372
posted October 22, 2002 04:36 PM
just keep in mind you must run an alternator or a trunk load of batteries.

Pickles
Dirt Maniac

Total posts: 144
posted October 24, 2002 10:20 AM
My track is dry/slick most of the time. (blue groove) So,I expect I will not have mud problems. I am going to mount the fan on brackets rather than on the rad. I do run alternator. Again, Thanks.

Just the Dad
Dirt Newbie

Total posts: 1
posted October 28, 2002 08:49 PM
quote:
Originally posted by Pickles:
My track is dry/slick most of the time. (blue groove) So,I expect I will not have mud problems. I am going to mount the fan on brackets rather than on the rad. I do run alternator. Again, Thanks.

We started running a electric fan this year and the cor does not get hot at all. I would recomend using one.

Pickel
Dirt Forum Champ
Total posts: 564
posted October 29, 2002 09:49 AM UIN: 25419780
hey Pickles..

it is wise that you run a alt. but you do not have to.. I run twin electric fans and lost the belt off my alt. and ran the car all nite..(5 hot laps ,10 heat 20 feature)..car still started after all that runing time. I run my alt off the rearend...

UFnARacing
Dirt Full Roller

Total posts: 68
posted October 30, 2002 11:42 AM
Can someone post some brand names and/or part numbers. I'd like to look into going this direction.

Thanks,
Randy

Scoot
Dirt Freak

Total posts: 330
posted October 30, 2002 12:07 PM
I would like some info on these too. I do plan on running an electric fan next season too.

------------------
Scoot
Smith Racing Team
870-365-5989

UFnARacing
Dirt Full Roller

Total posts: 68
posted November 03, 2002 04:15 PM
Maybe everyone just quit reading this post. We'll try again. Any info on what fans people are running, brand names, part numbers etc.......

Randy

Monster
Dirt Maniac

Total posts: 135
posted November 03, 2002 05:26 PM
We get ours from Lefthander Chassis. 16", costs about $80. Don't know brand for sure, may be Flex-a-lite. We use a Painless Wiring temp switch and relay, and also put in a manual override for the driver to play with.

eborcim
Dirt Full Roller

Total posts: 46
posted November 04, 2002 09:50 PM
I'm thinking about trying an electric fan this year with an alternator too. Perma-Cool makes a high flow (~2500 cfm) low amp fan that works good. Not cheap, but it's not a plastic fan either. Some people are putting on electric and mechanical fans. If you have room, I guess that would be cool. I run a good tight shroud on my mechanical fan and never got above 210 last year with water wetter and an overflow tank. Plus, I use synthetic oil which can stand a little more heat than mineral oil.

Pickel
Dirt Forum Champ
Total posts: 564
posted November 06, 2002 08:35 AM UIN: 25419780
I get my fans off a ford tarus 3.8 motor...

[This message has been edited by Pickel (edited November 09, 2002).]

66jj
Dirt Freak

Total posts: 352
posted November 08, 2002 02:02 PM
i have bought fans from 200- 6 dollars. the 200 was a dual black magic set up. it didnt pull near as much air as a oem fan of a front wheel drive gm products car, at pull and save for 6 bucks...

they have a built in shroud thats 16 inches so i run a 16 inch alum radiator now also, no sence having the extra 3 inches below the fan....

speeronline
Dirt Full Roller

Total posts: 37
posted November 10, 2002 10:52 PM
I got a used sprint car rear tire and cut the treat off to use for a wind dam(very durable and sturdy) and run a 16" elec. fan.... Last race the water pump locked up and snapped the belt after 3 laps on a 15 lap feature race and the Temp never got over 220. I was also running scheaffer oil... BTW still finished 5th!

hs
Dirt Full Roller

Total posts: 37
posted November 13, 2002 07:25 PM
i run a 4cyl 2300 on a 3/8mi clay track, been think maybe goin to a elec fan next yr. would like info on its benfits of it compared to a stock fan. run no alt, but if i put a bigger battery in will it be enough

Pickles
Dirt Maniac

Total posts: 144
posted November 17, 2002 10:17 PM
Pickel, I took your advice and got a Taurus 3.8 fan. Since I had already mounted a 2,000cfm fan from Summit that didn't do the job, I mounted the 3.8 in front of the Summit fan (both are in front of the rad since there is no room between the engine and rad) and built a shroud for them both.
At 2500 rpm (50 degrees today) the temp still climbs past 200. I turned it off at 200. Much better but still no cigar. Thanks for your input!

HRT187
Dirt Maniac

Total posts: 173
posted November 17, 2002 10:42 PM
Did you take a puller fan and make it a pusher?

I confused. You may have to open up your grill or something, or open the back of the rad a little. leaving a place for the air to go can be just as important as a place to pull it from.

Pickel
Dirt Forum Champ
Total posts: 564
posted November 18, 2002 09:09 AM UIN: 25419780
Pickles..
the tarus needs to be monted between rad and motor for less wind restrition and it was made for pulling air..if need be move rad forward a few inchs so you can get it in place.....the newer fans are also thinner then the old ones..92 and up are the thin ones

[This message has been edited by Pickel (edited November 18, 2002).]

eborcim
Dirt Full Roller

Total posts: 46
posted November 18, 2002 12:40 PM
In a dirt track situation, you have to put the electric fan behind the radiator. You don't want to close off any airflow coming through the radiator. make sure you have a good shroud, a rubber skirt at the bottom of the radiator, and some ducting to pick up air from beneath the nose.

speeronline
Dirt Full Roller

Total posts: 37
posted November 18, 2002 10:07 PM
Ran my 83 celica on some practice laps yesterday (25-30 @3500-5000 rpms) and forgot to turn on the Elec fan... Motor ran at 190 until I slowed down... I have a air dam that is about 3in from the ground made of used sprint car tire tread... you have got to try this!
Pickel... How do you run the Alt on the rearend??

UFnARacing
Dirt Full Roller

Total posts: 68
posted November 20, 2002 09:01 AM
Hey Pickels, I just read your profile to see what car your running, and I noticed your from Reno. So am I. Where did you run last year. I ran at Carson in Hobby, but I believe they're changing the rules this year, so I may go somewhere else. To the ones that have SUCCESSFULLY ran electric fans, what kind of cars and what kind of track. It's my belief that you need less cooling for a small car and a bigger track. Just want to know what's worked for who.

Randy

Pickles
Dirt Maniac

Total posts: 144
posted November 20, 2002 12:21 PM
Randy, I left Carson several years ago (ran Maverick class) when I felt the promoter was changing the rules too often. (Loved the track) Besides Moto-Cross, I raced off road buggys for awhile. After breaking my back twice; I decided to come back to the oval when the Fernley facility was built. I've spent the last two years building a Mod and expect it to be ready next season.

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