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How far should radiator fan extend into shroud? #677290 04/22/10 01:31 PM 04/22/10 01:31 PM
Joined: Mar 2007 Posts: 447 Knoxville, TN Y YGBSM OP mopar
YGBSM OP mopar Y Joined: Mar 2007 Posts: 447 Knoxville, TN	I am in the midst of an engine swap- 440. Old set up is being replaced by Mopar aluminum water pump and housing and Bouchillion single groove water pump pulley. The fan only extends a little into the shroud, whereas before it seemed like it was further in. So how far should the radiator fan extend into the shroud? Could I have put the fan on backward? Could the swap to a different water pump/housing and pulley changed the distance? Thanks! 1968 Charger R/T 2015 Charger R/T Scat Pack 2017 Durango Citadel

Re: How far should radiator fan extend into shroud? [Re: YGBSM] #677291 04/22/10 01:36 PM 04/22/10 01:36 PM
Joined: Nov 2006 Posts: 6,005 Reno, Nevada NV69B7RR master
NV69B7RR master Joined: Nov 2006 Posts: 6,005 Reno, Nevada	The rule of thumb I've always heard was to have an inch between the fan and radiator for otpimum cooling, so you could use that to determine if your fan is far enough into the shroud. 72 Demon 340 71 Duster 340 Resto https://board.moparts.org/ubbthreads/show...part=1&vc=1

Re: How far should radiator fan extend into shroud? [Re: YGBSM] #677292 04/22/10 01:42 PM 04/22/10 01:42 PM
Joined: Jan 2003 Posts: 104,346 Garden Grove, CA OzHemi Penguin-hating Ginger
OzHemi Penguin-hating Ginger Joined: Jan 2003 Posts: 104,346 Garden Grove, CA	I thought the optimum distance was to have the fan about half way into the shroud.. With it all the way in, there was more turbulance or such...

Re: How far should radiator fan extend into shroud? [Re: YGBSM] #677293 04/22/10 01:42 PM 04/22/10 01:42 PM
Joined: Dec 2007 Posts: 7,759 So Cal HealthServices Why would you even post that?
HealthServices Why would you even post that? Joined: Dec 2007 Posts: 7,759 So Cal	From what I understand the fan blade should be half way into the shroud. Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.

Re: How far should radiator fan extend into shroud? [Re: HealthServices] #677294 04/22/10 01:47 PM 04/22/10 01:47 PM
Joined: Jan 2003 Posts: 24,562 Brookeville, Md Mr.Yuck Not enough dumb comments...yet
Mr.Yuck Not enough dumb comments...yet Joined: Jan 2003 Posts: 24,562 Brookeville, Md	Quote: From what I understand the fan blade should be half way into the shroud. yeah but I don't think a 1/4" either way is going to kill you [IMG]http://i66.tinypic.com/pui5j.jpg[/IMG] Coming soon!!!!

Re: How far should radiator fan extend into shroud? [Re: YGBSM] #677295 04/22/10 02:07 PM 04/22/10 02:07 PM
Joined: Sep 2005 Posts: 6,516 Santa Cruz, California L Lefty master
Lefty master L Joined: Sep 2005 Posts: 6,516 Santa Cruz, California	Quote: So how far should the radiator fan extend into the shroud? 1/2" to 3/4" Is what was listed in the instructions for the after-market fans I've installed over the years.

Re: How far should radiator fan extend into shroud? [Re: Lefty] #677296 04/22/10 08:25 PM 04/22/10 08:25 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: 1/2" to 3/4" I'd prefer a bit closer to 3/4 of it inside the shroud Last edited by RapidRobert; 04/22/10 08:29 PM. live every 24 hour block of time like it's your last day on earth

Re: How far should radiator fan extend into shroud? [Re: YGBSM] #677297 04/22/10 09:01 PM 04/22/10 09:01 PM
Joined: Mar 2005 Posts: 2,060 Pendleton NY T terzmo top fuel
terzmo top fuel T Joined: Mar 2005 Posts: 2,060 Pendleton NY	Blade should be half in...half out

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