I've always wondered at what point either a pusher or puller fights/blocks normal air flow myself. Any reputable fan mfg will tell you that a pusher is about 70% as efficient as the same fan in a puller configuration so that's something to consider when choosing a size. I don't think you'd have a problem with one fan pushing more than another pulling as the pusher would only need to be working at lower engine RPMs anyway to compensate for lack of air moving across the cooling fins. If you set it up to come on at 210 or 220 and go off at 180 (or even a manual override switch), it should only be working at low engine speed anyway such as when you're in traffic and the temp climbs.
Dale McIntosh TC Gold #92/ACES #1709/NECOA #41 GR8PMKN FOR SALE DalesPlace My 67 SS and 67 El Camino ChevelleStuff Decoding info on 64-72 Chevelles MidwestChevelles Midwest Chevelle Show Information I've stopped 13,500 spam messages. You can too! One month FREE spam protection at http://www.cloudmark.com/spamnetsig/ > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Bob Holtzman > Sent: Saturday, June 26, 2004 1:51 PM > To: [EMAIL PROTECTED] > Subject: [Chevelle-list] electric fan mounting question > > I want to put an electric fan on my '65 Malibu. The question > is whether to mount it as a pusher or puller. I've been > advised to mount it in front of the radiator (pusher) and > leave the present 7 blade clutch mounted fan in place. It > seems to me that the two fans could fight. In other words, it > seems that there would be some engine speed level below which > the electric fan is trying to move more air than the engine > mounted fan can pass. At that point the engine fan would > partially block the flow of the electric. This would be bad > news as low engine speed is where extra air flow is needed, > especially in Phoenix at this time of year. > > Does this sound as if it has the ring of truth or am I > needlessly worried? > Is anyone running a setup like this? Any advice appreciated. > > -- > Bob Holtzman > "If you think you're getting free lunch, ......check the > price of the beer!" > > >
