Electric fans

Discussion of technical issues and ideas (engine, chassis)

Moderators: P3g4sus, Daniel, rat, Draco, Riekert

User avatar
widowmaker
200SX Maniac
Posts: 3051
Joined: Wed Aug 02, 2006 9:50 am
Car: S13
Real Name: Walter
Location: im from another planet?
Contact:

Post by widowmaker »

RADIATOR!

mmm, quite clever, never thought of it that way, thanks china!

very clever
User avatar
widowmaker
200SX Maniac
Posts: 3051
Joined: Wed Aug 02, 2006 9:50 am
Car: S13
Real Name: Walter
Location: im from another planet?
Contact:

Post by widowmaker »

hehehehe, hes got ho's

HO HO HO!
User avatar
ChemCool
SX Forumholic
Posts: 2195
Joined: Tue Aug 01, 2006 11:59 am
Car: S13
Location: Centurion
Contact:

Post by ChemCool »

i dunno for sure - its a deduction watson!!!
Ok, I follow that.
COOLER, FASTER, LIGHTER
www.wappage.mobi AGENTS NEEDED URGENTLY!

Image
The Calibrator
0.4 Bar Boost
Posts: 498
Joined: Wed Nov 22, 2006 6:36 am
Car: S13

Post by The Calibrator »

1 The whole advantage of electric fans is that they dont have to run all the time reducing the load on the electrical system and not stealing engine power to drive a fan. Personally I hate fans that run all the time.

2: As long as the car has a thermostat you can run a windtunnel into the radiator and the engine temp will not drop below the thermostat opening point.

3: The viscous coupling is designed to slip over a certain load so at hway speeds the viscous fan is not turning at all. As a test rev the engine up slowly, at about 3000 rpm the fan should start slowing down and come almost to stop if you hold it there long enough.
User avatar
Toby
Club Founder
Posts: 1874
Joined: Tue Aug 01, 2006 10:44 am
Car: S13
Real Name: Toby Kurien
Location: Midrand
Contact:

Post by Toby »

In my view, the viscous fan offers VERY LITTLE resistance when it's cold. I mean just try turning the fan with your hand when your car is cool. So how much horsepower is this robbing from the engine? Have you tried turning the a single cam gear with your hand (nevermind both)?? MUCH MUCH harder.

As for fixing the viscous clutch - it's not possible. It is a sealed unit. The part that breaks is actually the bearings - it develops play on it and then the whole fan starts wobbling - this is amplified by the fact that all the weight of the fan and clutch is hanging off a leveraged surface on one side of the water pump, which causes intense vibrations, which causes further bearing wear. What's worse, is that it this will introduce play in the water pump bearing.
Red 200SX S13, 1992, stock. <a href="/phpBB3/viewtopic.php?t=332">Engine rebuilt (click)</a>.
User avatar
widowmaker
200SX Maniac
Posts: 3051
Joined: Wed Aug 02, 2006 9:50 am
Car: S13
Real Name: Walter
Location: im from another planet?
Contact:

Post by widowmaker »

yeah, mine wobbles more than the http://WWW wobbleweb

what is even worse is that (with all this weight and drag) the original stupid water pump has PLASTIC BEARINGS!

funny japanese these
Hennie Marais
0.3 Bar Boost
Posts: 386
Joined: Wed Nov 29, 2006 11:23 am
Car: S13
Location: Rustenburg

Post by Hennie Marais »

Electric fans is the best way to go, engine runs quieter with them. Just remember to make the fans come on when you switch the aircon on. Some guys forget about that.
Post Reply