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What electric fan to use?? Running hot #1034869 07/18/11 11:42 AM 07/18/11 11:42 AM
Joined: Jun 2010 Posts: 80 South Shore MA 6 67GTMIKE OP member
67GTMIKE OP member 6 Joined: Jun 2010 Posts: 80 South Shore MA	Big block stroker with 4core champion aluminum radiator. Have a shroud duel 12" electric fan setup pulling 2800 cfm's. Still running hot, hear I need more powerful fans? Anyone know what I should try?

Re: What electric fan to use?? Running hot [Re: 67GTMIKE] #1034870 07/18/11 11:45 AM 07/18/11 11:45 AM
Joined: Jan 2003 Posts: 28,068 Irving, TX feets Senior Management
feets Senior Management Joined: Jan 2003 Posts: 28,068 Irving, TX	What size is the core? If it's the same size as a stock 26" fan, there's only one high performance solution. https://board.moparts.org/ubbthreads/show...part=1&vc=1 We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon

Re: What electric fan to use?? Running hot [Re: feets] #1034871 07/18/11 02:38 PM 07/18/11 02:38 PM
Joined: Jan 2007 Posts: 780 Woodinville, WA Viol8r super stock
Viol8r super stock Joined: Jan 2007 Posts: 780 Woodinville, WA	I doubt that is your issue. Do you know what your initial timing is?

Re: What electric fan to use?? Running hot [Re: feets] #1034872 07/18/11 03:01 PM 07/18/11 03:01 PM
Joined: Jun 2010 Posts: 80 South Shore MA 6 67GTMIKE OP member
67GTMIKE OP member 6 Joined: Jun 2010 Posts: 80 South Shore MA	Radiator is 24x16 tanks on top / bottom Fans are 12" 1400 cfm each. It is moving good air but, I think I need more powerful fans. I will look into the benz you have but, I don't think I will have clearence to engine because it is a single fan, motor in middle and like I said I have a 3" think 4 core rad. May be tight fit. Thanks-

Re: What electric fan to use?? Running hot [Re: 67GTMIKE] #1034873 07/18/11 03:13 PM 07/18/11 03:13 PM
Joined: Mar 2008 Posts: 571 Western NC 68Bullit mopar
68Bullit mopar Joined: Mar 2008 Posts: 571 Western NC	Quote: It is moving good air but, I think I need more powerful fans. You should consider that if it's already "moving good air" that it's probably moving the air good enough, or maybe even more than enough. I'd look elsewhere to solve the problem. OR..... if it is NOT moving enough with an electric fan setup, I'd move away from electric fans and go thermal clutch fan with a shroud after I checked the timing

Re: What electric fan to use?? Running hot [Re: 68Bullit] #1034874 07/18/11 03:23 PM 07/18/11 03:23 PM
Joined: Jul 2008 Posts: 30,443 Florida STAYcation dOoC The village idiot's idiot
dOoC The village idiot's idiot Joined: Jul 2008 Posts: 30,443 Florida STAYcation	R U sure it is air-flow ? .... try driving it 30mph or faster. If your running-hot issue goes-away ..THEN it is a flow-prob. But with a 2800 cfm fan .. it should NOT be.

Re: What electric fan to use?? Running hot [Re: 67GTMIKE] #1034875 07/18/11 05:17 PM 07/18/11 05:17 PM
Joined: Jan 2007 Posts: 780 Woodinville, WA Viol8r super stock
Viol8r super stock Joined: Jan 2007 Posts: 780 Woodinville, WA	Quote: Radiator is 24x16 tanks on top / bottom Fans are 12" 1400 cfm each. It is moving good air but, I think I need more powerful fans. I will look into the benz you have but, I don't think I will have clearence to engine because it is a single fan, motor in middle and like I said I have a 3" think 4 core rad. May be tight fit. Thanks- Really!!! Benz fans!? Ok. You have not even checked the basic things yet. 1968 Pro-Touring Dodge Charger *2011 Optima Ultimate Street Car Challenge Invitee http://www.popularhotrodding.com/features/1203phr_1968_dodge_charger/index.html

Re: What electric fan to use?? Running hot [Re: 67GTMIKE] #1034876 07/18/11 08:01 PM 07/18/11 08:01 PM
Joined: Jan 2003 Posts: 25,849 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,849 Rio Linda, CA	How "hot" is it running and under what conditions? The INTERNET, the MISinformation superhighway

Re: What electric fan to use?? Running hot [Re: 67GTMIKE] #1034877 07/18/11 08:52 PM 07/18/11 08:52 PM
Joined: Jan 2003 Posts: 27,728 places 7 79powerwagon Too Many Posts
79powerwagon Too Many Posts 7 Joined: Jan 2003 Posts: 27,728 places	You also didn't say what your definition of "hot" is, and at what type of operation it becomes "hot".

Re: What electric fan to use?? Running hot [Re: 79powerwagon] #1034878 07/18/11 10:23 PM 07/18/11 10:23 PM
Joined: Aug 2003 Posts: 12,291 Kent, Wa 340SHORTY Truck Nut
340SHORTY Truck Nut Joined: Aug 2003 Posts: 12,291 Kent, Wa	what water pump and houseing are you running?? I am truckless..

Re: What electric fan to use?? Running hot [Re: 68Bullit] #1034879 07/19/11 09:45 AM 07/19/11 09:45 AM
Joined: Dec 2004 Posts: 5,278 San Jose, California D DennisH Vacation
DennisH Vacation D Joined: Dec 2004 Posts: 5,278 San Jose, California	Quote: Quote: It is moving good air but, I think I need more powerful fans. You should consider that if it's already "moving good air" that it's probably moving the air good enough, or maybe even more than enough. I'd look elsewhere to solve the problem. OR..... if it is NOT moving enough with an electric fan setup, I'd move away from electric fans and go thermal clutch fan with a shroud after I checked the timing Agreed. Thermal. Copper. Green coolant. 180 Superstat. Shroud.

Re: What electric fan to use?? Running hot [Re: 68Bullit] #1034880 07/19/11 10:39 AM 07/19/11 10:39 AM
Joined: Jun 2010 Posts: 80 South Shore MA 6 67GTMIKE OP member
67GTMIKE OP member 6 Joined: Jun 2010 Posts: 80 South Shore MA	Ok, here is some more detail: It is new stroker 72 400 block 30 over to 499 stuffed in an A body 68 Dart. Built for street / strip. The timming is not advanced. I am running 93 octane with the NOS octane booster. 11 to 1 compression. Hi Flow mech water pump. Using water and the wet water additive that says it helps reduce temp. I started out with a 22x16 champinon 4 core rad along with a 16" Zirgo electric fan that stated it pushes 3000 cfm. It would not fit as a puller, so I mounted it in grill as pusher. I did have enough room for a mech fan with no shroud so I ran that as well. No thermostat. Let her run at idel, took around 18 minutes before it climmed to 205 then I shut it down. I took her for a ride and it stayed around 195 till I slow down or stop at a light then she quickly starts to rise and I am forced to shut her down again. I then put in a 160 thermostat and it did not help. So I assumed I needed a stronger cfm fan. Problem can't find nor fit a bigger fan on that 16x22 rad, so I eneded up gettng a new 16x24 4 core rad with the (2) 12" fans along with shroud. They fit in as a puller but, no room for mech fan anymore. This fan setup is rated at 1400 each = 2800 cfm but, it appears to be a much better setup and the fans do seem better than the one Zirgo. Yet I am still having the same issues, made little to no difference. Looking online reading up on rad and fan setups I notice for the bigger apps / trucks , most of the setups are putting out over 4000 cfm using big 13" to 15" duel fans. So again I am wondering if I need to stuff an even bigger radiator in my Dart so I can mount bigger stronger fans?

Re: What electric fan to use?? Running hot [Re: Viol8r] #1034881 07/19/11 11:28 AM 07/19/11 11:28 AM
Joined: Jan 2007 Posts: 780 Woodinville, WA Viol8r super stock
Viol8r super stock Joined: Jan 2007 Posts: 780 Woodinville, WA	Quote: I doubt that is your issue. Do you know what your initial timing is? You are really hung up on the fans and thermostats! I can almost bet you are way off on your timing. That is a lot of motor for someone to make comments like "the timing is not advanced". I PM'ed you with some questions. I think you will get a lot more information if you start with the basics. 1968 Pro-Touring Dodge Charger *2011 Optima Ultimate Street Car Challenge Invitee http://www.popularhotrodding.com/features/1203phr_1968_dodge_charger/index.html

Re: What electric fan to use?? Running hot [Re: 67GTMIKE] #1034882 07/19/11 12:13 PM 07/19/11 12:13 PM
Joined: Dec 2006 Posts: 3,533 Indiana F Fury Fan master
Fury Fan master F Joined: Dec 2006 Posts: 3,533 Indiana	Quote: Ok, here is some more detail: It is new stroker 72 400 block 30 over to 499 stuffed in an A body 68 Dart. Built for street / strip. Problem might be aggravated if the engine's not broken in yet? Quote: Hi Flow mech water pump. Using water and the wet water additive that says it helps reduce temp. There was a batch of aftermarket alum waterpump housings that reportedly had small passages in them. I don't know anything more than that nugget, you'll have to research that one. Quote: Let her run at idel, took around 18 minutes before it climmed to 205 then I shut it down. 205� isn't quite dangerous at idle/no-load, it's just higher than we gearheads want. How much higher would it go? If it's 95� ambient, settling in at say, 208� at idle might be 'normal'. Quote: I took her for a ride and it stayed around 195 till I slow down or stop at a light then she quickly starts to rise and I am forced to shut her down again. I then put in a 160 thermostat and it did not help. A 160 T-stat will not make an engine run cooler if there is something under-performing in the cooling system. It will simply make it take a little longer to get to that first T-stat opening point and maybe a few after that. Meaning - it buys you a little time, but doesn't change the equilibrium temperature of the system.

Re: What electric fan to use?? Running hot [Re: Fury Fan] #1034883 07/19/11 05:23 PM 07/19/11 05:23 PM
Joined: Jan 2003 Posts: 1,883 Northern OH R rapom top fuel
rapom top fuel R Joined: Jan 2003 Posts: 1,883 Northern OH	If you are running a 440source waterpump housing, those have been known to cause overheating because they are restrictive. Also make sure you got a good engine to chassis ground.

Re: What electric fan to use?? Running hot [Re: 67GTMIKE] #1034884 07/19/11 06:50 PM 07/19/11 06:50 PM
Joined: Jan 2003 Posts: 25,849 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,849 Rio Linda, CA	Quote: Let her run at idel, took around 18 minutes before it climmed to 205 then I shut it down. I took her for a ride and it stayed around 195 till I slow down or stop at a light then she quickly starts to rise and I am forced to shut her down again. I then put in a 160 thermostat and it did not help. That's not really too hot depending on your cap, a 16 psi cap is good to over 230. The INTERNET, the MISinformation superhighway

Re: What electric fan to use?? Running hot [Re: John_Kunkel] #1034885 07/19/11 07:59 PM 07/19/11 07:59 PM
Joined: Jan 2007 Posts: 7,664 IN A ahy master
ahy master A Joined: Jan 2007 Posts: 7,664 IN	205 idle/195 running is a bit warm but not dangerous. Running down the road with a good stream of air and 160 degree stat, you should really see temps below 195. I'm not so sure the fan is the problem. On paper you have a strong system - 4 core rad, high flow WP, big electric fan - but you are not quite where you want to be. A pic of the radiator/fan/shroud setup might help diagnose. Here are some suggestions to help get temps down... some repeated from previous posts. - Check timing and idle mixture. Adequate timing at idle helps the engine run more efficiently and reduces heat. With a warm cam you probably need 15-20 degrees advance at idle. - Check pulley ratios. I've had great results with a slightly overdriven fan/waterpump running about 107% of crank speed. If you have a small crank pulley and large fan pulley, the pump may be running too slow. - Let us know which pump you have. I'll dig out and post a pump comparison from a previous thread. Some/most of the aftermarket "high flow" pumps flow less at idle than the stock pump. The pump is a lot more important than the housing. - Consider a 26" radiator. I believe you posted you are running a 22". The factory used 26" on higher power setups for good reason. Frontal area is a lot more effective than added rows to increase cooling capacity.

Re: What electric fan to use?? Running hot [Re: ahy] #1034886 07/19/11 08:02 PM 07/19/11 08:02 PM
Joined: Jan 2007 Posts: 7,664 IN A ahy master
ahy master A Joined: Jan 2007 Posts: 7,664 IN	Link to thread with waterpump comparison link. https://board.moparts.org/ubbthreads/show...rue#Post6678505

Re: What electric fan to use?? Running hot [Re: 67GTMIKE] #1034887 07/20/11 02:57 AM 07/20/11 02:57 AM
Joined: Feb 2003 Posts: 8,679 A Andrewh master
Andrewh master A Joined: Feb 2003 Posts: 8,679	Quote: Ok, here is some more detail: I took her for a ride and it stayed around 195 till I slow down or stop at a light then she quickly starts to rise and I am forced to shut her down again. I then put in a 160 thermostat and it did not help. So I assumed I needed a stronger cfm fan. what thermostate were you running during the part in yellow? now that you put a 160 in it, what does it run when you are moving? it sounds like an air flow issue, if it maintains temp at speed, but not at idle. not saying there aren't other things to do to help bring temps down, but I don't think a timing change will solve it all either.

Re: What electric fan to use?? Running hot [Re: 67GTMIKE] #1034888 07/20/11 03:21 AM 07/20/11 03:21 AM
Joined: Jul 2008 Posts: 30,443 Florida STAYcation dOoC The village idiot's idiot
dOoC The village idiot's idiot Joined: Jul 2008 Posts: 30,443 Florida STAYcation	Quote: I started out with a 22x16 champinon 4 core rad along with a 16" Zirgo electric fan that stated it pushes 3000 cfm. It would not fit as a puller, so I mounted it in grill as pusher. I did have enough room for a mech fan with no shroud so I ran that as well. No thermostat. Let her run at idel, took around 18 minutes before it climmed to 205 then I shut it down. I took her for a ride and it stayed around 195 till I slow down or stop at a light then she quickly starts to rise and I am forced to shut her down again. I then put in a 160 thermostat and it did not help. A pusher fan .. mounted on the grille ? ... IMO .... WHAT will it take to get a puller in there ?

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