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Re: Opinions on an addition of a helper electric fan [Re: RapidRobert] #1416823 04/08/13 05:51 PM 04/08/13 05:51 PM
Joined: Apr 2007 Posts: 4,233 petaluma,ca. u.s.a. west master
west master Joined: Apr 2007 Posts: 4,233 petaluma,ca. u.s.a.	I would go to a larger rad. as suggested. It is the easiest and prob. least expensive route. The high volume pump probably isn't helping either. It can actually push the water through the rad. too quickly not giving it time to cool.

Re: Opinions on an addition of a helper electric fan [Re: MidPenMopar] #1416824 04/08/13 05:57 PM 04/08/13 05:57 PM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	First thing I would do is jet it up 1 or 2 steps and make sure it has enough timing at idle. Cost nothing!! All stock cooling here Stu And I have been in some really hot places with no overheating at idle. I'm starting to see a glimpse of your tune up from here Stu? Burning off the coating on your headers said something to me also?

Re: Opinions on an addition of a helper electric fan [Re: MidPenMopar] #1416825 04/08/13 06:00 PM 04/08/13 06:00 PM
Joined: Jan 2003 Posts: 27,453 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,453 So Cal	Quote: Quote: Quote: I believe you want the fan to be ~2/3 of the way into the shroud. Can someone clarify 50/50. Half in and half out. So is that the definate answer for fan placement as i have always wondered what was the best. I thought as close to the radiator as possible, but it seems not. Yes, half in and half out of the opening edge of the fan shroud opening. That came from an engineer at a radiator manufacturer. Also the diameter of the opening should be 10% the diameter of the fan.

Re: Opinions on an addition of a helper electric fan [Re: therocks] #1416826 04/08/13 06:04 PM 04/08/13 06:04 PM
Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi... MidPenMopar OP Looking for fun? Keep looking
MidPenMopar OP Looking for fun? Keep looking Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi...	Quote: My 65 440 that built large runs a stock never touched rad.Its a C body 22 with factory shroud. I am sure i have some other issue as i have had this problem since i got the car 12 years ago, but i was hoping to get a sort of cheap quick fix untill i rebuild the engine in the winter. So that was why i was thinking of an external fan. I saw how well it worked with one of my friends did that with a $150 pusher fan on her 350 V-8 camaro and it did the trick for her when she was up ar Hot August Nights on a 100 degree day in a parade.

Re: Opinions on an addition of a helper electric fan [Re: Challenger 1] #1416827 04/08/13 06:07 PM 04/08/13 06:07 PM
Joined: Jan 2003 Posts: 27,453 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,453 So Cal	Quote: First thing I would do is jet it up 1 or 2 steps and make sure it has enough timing at idle. Cost nothing!! All stock cooling here Stu And I have been in some really hot places with no overheating at idle. I'm starting to see a glimpse of your tune up from here Stu? Burning off the coating on your headers said something to me also? I'm thinking Stu might me getting hot in heavy gridlocked San Francisco metropolitan traffic. So that's like driving for 1/2 hour plus then coming to a complete stop and for over 3 minutes moving at a walking pace at best in gear with an automatic.

Re: Opinions on an addition of a helper electric fan [Re: Challenger 1] #1416828 04/08/13 06:10 PM 04/08/13 06:10 PM
Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi... MidPenMopar OP Looking for fun? Keep looking
MidPenMopar OP Looking for fun? Keep looking Joined: Dec 2003 Posts: 36,840 South San Francisco, Californi...	Quote: I'm starting to see a glimpse of your tune up from here Stu? Burning off the coating on your headers said something to me also? Yep i am going to do that and richen up the fuel mixture this week to see what that does if anything. The problem is around here it never gets hot enough to test if that helps at all. So i have to wait untill i go somewhere warmer in the summer to see any results and i did not want to find out when i get stuck.

Re: Opinions on an addition of a helper electric fan [Re: autoxcuda] #1416829 04/08/13 06:17 PM 04/08/13 06:17 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	Quote: Also the diameter of the opening should be 10% the diameter of the fan. Do you mean if it's a 12" dia fan then the fan tip(s) to shroud clearance should be 1.2"? live every 24 hour block of time like it's your last day on earth

Re: Opinions on an addition of a helper electric fan [Re: RapidRobert] #1416830 04/08/13 06:20 PM 04/08/13 06:20 PM
Joined: Jan 2003 Posts: 27,453 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,453 So Cal	Quote: Quote: Also the diameter of the opening should be 10% the diameter of the fan. Do you mean if it's a 12" dia fan then the fan tip(s) to shroud clearance should be 1.2"? 1/2 of that number to get the difference in radius. Clearance would be .6" on each side from tip to opening edge in that case.

Re: Opinions on an addition of a helper electric fan [Re: autoxcuda] #1416831 04/08/13 06:23 PM 04/08/13 06:23 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	Forgot about the dia/radius difference . Got it & thank you & for the 50/50 info also live every 24 hour block of time like it's your last day on earth

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