nissan720 Posted July 3, 2017 Report Share Posted July 3, 2017 currently doing my engine swap,wanted to use an electric fan instead of going back with clutch fan.seen several at summit racing,any recommendations .my truck has a/c. 1 Quote Link to comment
datzenmike Posted July 3, 2017 Report Share Posted July 3, 2017 Well go as big as possible. . AC adds an extra load to the cooling system. If room, use a front mount pusher fan. If not, use a draw through mounted behind the rad. Likely a fan will have two wires that can be reversed to change fan direction 1 Quote Link to comment
nissan720 Posted July 3, 2017 Author Report Share Posted July 3, 2017 ok thanks,by the way i do have an aluminum radiator that i an installing as well.its larger than the stock radiator 1 Quote Link to comment
datzenmike Posted July 3, 2017 Report Share Posted July 3, 2017 The AC condenser will block flow somewhat. 1 Quote Link to comment
_chiefjt Posted July 3, 2017 Report Share Posted July 3, 2017 What kind of engine swap are you doing? 1 Quote Link to comment
nissan720 Posted July 3, 2017 Author Report Share Posted July 3, 2017 doing a carb ka24e 1 Quote Link to comment
dhp123166 Posted July 3, 2017 Report Share Posted July 3, 2017 I have a Flex-A-Lite Trimline puller fan. The puller and pusher fans that Flex-A-Lite sells are the same except the fan blades are slightly different. There is not enough room in the front of my 720 for a pusher fan and there is barely enough room in the engine bay for a puller fan. Having stated that, the stock fan cooled better than this electric fan, but then my diesel engine does not mind heat. It is wired to a manual switch on the dash, as the automatic on/off seemed needlessly complex to me and I did not like the idea of the fan running while the vehicle was off. Good luck! 1 Quote Link to comment
_chiefjt Posted July 4, 2017 Report Share Posted July 4, 2017 Oh ok, well I've ran dual fans before on my z24. And I did have a/c as well. I'm not sure how much the ka alternator amp output is but mine drawed a noticable power difference out of the motor with it being low output alternator. I was running 2 10 inch Spal fans but after a while I did end up taking the a/c system out for more performance. And then once the summer hit I took the fans out because I just drawed too much and was running a tad hotter. I was running the original radiator but currently running the stock fan clutch with an aluminum radiator now. Runs way cooler but do plan on switching back but to a single electric fan setup along with upgrading the alternator. Be sure to run a fan shroud as that helps draw the cooling better. I made my own out of a sheet of aluminum 1 Quote Link to comment
datzenmike Posted July 4, 2017 Report Share Posted July 4, 2017 Wire the fans to a sensor so that it eliminates forgetting or not noticing the temp gauge. Eliminate the human error factor. It also helps cool a heat soaked engine when you walk away from it. 2 Quote Link to comment
Charlie69 Posted July 4, 2017 Report Share Posted July 4, 2017 Also run relays so the fan amp draw is not through the switch. 2 Quote Link to comment
datzenmike Posted July 4, 2017 Report Share Posted July 4, 2017 That's what I did plus a 30 amp fuse. 1 Quote Link to comment
_chiefjt Posted July 4, 2017 Report Share Posted July 4, 2017 Same here. Forgot to mention that 1 Quote Link to comment
dhp123166 Posted July 4, 2017 Report Share Posted July 4, 2017 Also run relays so the fan amp draw is not through the switch. Yep, no relay is a good way to fry your switch..maybe when you need it most! 1 Quote Link to comment
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