Re: [Chevelle-List] Operating temperature- Electric vs Manual : While where on this topic..

[Rodney.]

Title: Message

Woops!  :)  Ya, you're right, I got the fc3.   http://www.centechwire.com/catalog/cooling/fc3.shtml   It's working fine, I'm just wondering if I went with the right "temp on" for my setup.  I won't know until summer though.  The other one would be nice just so you could play with it to see what temp works best for kicking the fans on.    Rodney. 71 Chevelle El Mirage, AZ     ----- Original Message ----- From: Dale McIntosh To: [EMAIL PROTECTED] Sent: Sunday, December 15, 2002 9:17 PM Subject: RE: [Chevelle-List] Operating temperature- Electric vs Manual : While where on this topic.. Rodney,   I've seen the Centec unit advertised somewhere before.  Looks like a simple and elegant solution if you have a place to mount the box.  Your two links (wish you'd splurged and what you did get) are the same unit.  I assume you meant that you got the relay kit http://www.centechwire.com/catalog/cooling/fc3.shtml?  Still looks like it'd work alright if you have a place for a temp sender. Dale McIntosh -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Rodney. Sent: Sunday, December 15, 2002 9:36 PM To: [EMAIL PROTECTED] Subject: Re: [Chevelle-List] Operating temperature- Electric vs Manual : While where on this topic.. I was looking at this one when I bought my fans... wish I would have splurged... http://www.centechwire.com/catalog/cooling/fc2p.shtml     I ended up with this one:  http://www.centechwire.com/catalog/cooling/fc2p.shtml   This one looks nice too:  http://www.geocities.com/diels12000/FanWiringII.jpg It's a PermaCool p/n: 18905       Rodney. 71 Chevelle El Mirage, AZ     ----- Original Message ----- From: Larry Brown To: [EMAIL PROTECTED] Sent: Sunday, December 15, 2002 7:53 PM Subject: Re: [Chevelle-List] Operating temperature- Electric vs Manual : While where on this topic.. I have an electric fan that I bought from ebay... just not sure how to hook it up.. Does anyone know of a kit for the electronic stuff...   Larry 65 Chevelle Sled... ----- Original Message ----- From: Michael Pell To: [EMAIL PROTECTED] Sent: Sunday, December 15, 2002 8:40 PM Subject: Re: [Chevelle-List] Operating temperature- Electric vs Manual I think the reason is simply that the 7 blade clutch fan, shrouded appropriately, pulls a LOT of air. Believe it or not, my 468ci COOLS DOWN when sitting in traffic.  Go figure.  It dropped about 10 degrees over about an hour while waiting on an accident to get cleaned up.  Std 4 core radiator, '73 HD 7 blade clutch fan, properly shrouded. At about 2000rpm, if I stand in front of the grill with a loose fitting, untucked T-shirt on, it'll get sucked up to the grill.    Works like a champ. It certainly is the cheaper route to go, and it's been working for 30+ years. Now, an electric fan and/or elec water pump is especially nice when you shut the engine off and want to cool down sooner. Don wrote: I'm with you on this one Steve, I plan on replacing my radiator & fan next year but I'm really not sure how to go. I was originally planning on an aluminum radiator with two high efficiency electric fans & maybe even an electric water pump. But having heard so many swear by a standard 4 core radiator & a clutch fan set up I'm not sure what to do.It seems to me that the electric would work better especially at slow speeds/in traffic, but that's not what everyone seems to be saying is the case.Don  I have read & heard several places now where manual fans work better than electric. I have even heard of guys dumping a several hundred dollar electric fan setup to go back to a manual fan. I am just having trouble understanding why .....when you consider that in MOST cases temperature will go up only when sitting in traffic or otherwise going too slow for air to be forced through the radiator.Now, when you are sitting in traffic...or going slow ..you are mostly relying on the fan to pull air through the radiator to keep your engine cool. A manual fan is turning at a rate that is relative to the engine RPM's. This is when your engine RPM's are at their lowest .....and theoretically the fan would be pulling the least amount of air through at the lower RPM's. With electric fans....when the temp went up high enough to kick the thermal switch on,  the fans would be turning at a high rate of speed and, in my mind at least, be pulling much more air through the radiator than a manual fan could at a low idle.I must be dense. I mean I know this is one situation where the cheaper way is best .....but I am having troubles understanding why!  --   Check out my webpage at http://www.ProStreetCar.com   and my For Sale page at http://www.ProStreetCar.com/classifieds.html   TREMEC Distributor at http://www.5speedTransmissions.com   Team Chevelle member #1778 (Gold),  ACES member #1377