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MP Viscous Fan Clutch #1490726 08/25/13 09:31 PM 08/25/13 09:31 PM
Joined: Dec 2007 Posts: 232 Alberta Canada PossessedDuster OP enthusiast
PossessedDuster OP enthusiast Joined: Dec 2007 Posts: 232 Alberta Canada	Is it possible to get the clutch only from anyone? I have a Jag clutch behind my Wizard rad but it's not in the shroud enough and a Hayden replacement one is too long. Car cools great while moving but the temps creeps up while idleing for an extended period. Think moving the fan in a bit will help. I played this game on my Duster a few years ago and found the MP clutch that comes with the fan was perfect length.

Re: MP Viscous Fan Clutch [Re: PossessedDuster] #1490727 08/25/13 09:54 PM 08/25/13 09:54 PM
Joined: Jan 2007 Posts: 7,664 IN A ahy master
ahy master A Joined: Jan 2007 Posts: 7,664 IN	I believe the MP fan clutch was selected from a standard late 60's/early 70's slant six offering. Hopefully somebody knows the interchange. Your other choice is a spacer... preferably the piloted type.

Re: MP Viscous Fan Clutch [Re: ahy] #1490728 08/25/13 09:56 PM 08/25/13 09:56 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	Quote: Your other choice is a spacer... preferably the piloted type. X2 live every 24 hour block of time like it's your last day on earth

Re: MP Viscous Fan Clutch [Re: RapidRobert] #1490729 08/25/13 10:38 PM 08/25/13 10:38 PM
Joined: Feb 2009 Posts: 1,274 Ontario.Canada C can.al pro stock
can.al pro stock C Joined: Feb 2009 Posts: 1,274 Ontario.Canada	..i read somewhere that clutch fans only operate at about 80% of crank speed.You are probably not moving enough air when idling. ..a solid fan with more pitch may help,or a hi quality flex fan.

Re: MP Viscous Fan Clutch [Re: PossessedDuster] #1490730 08/25/13 10:54 PM 08/25/13 10:54 PM
Joined: Dec 2007 Posts: 232 Alberta Canada PossessedDuster OP enthusiast
PossessedDuster OP enthusiast Joined: Dec 2007 Posts: 232 Alberta Canada	So many guys running clutch fans that I should be able to make this work. It's a mild built 440 in a 67 Belvedere with a new Wizard cooling 22" aluminum rad with 1.25" tubes. I have from a rough measurement 3/4" from the rad to the current Jag fan clutch which only puts the fan blades in about 1/4 of the way into the shroud. Really dont want to listen to a solid fan all the time. Figure a clutch with 3" total height should fit the bill

Re: MP Viscous Fan Clutch [Re: PossessedDuster] #1490731 08/26/13 12:02 AM 08/26/13 12:02 AM
Joined: Dec 2012 Posts: 17 oklahoma 6 69suprbee member
69suprbee member 6 Joined: Dec 2012 Posts: 17 oklahoma	Go to Hayden's web site and take a look at their fan clutch specs to find what you need and you can cross reference to most auto parts stores.i had to try a few before I got the right one to fit my bee. Last edited by 69suprbee; 08/26/13 12:04 AM.

Re: MP Viscous Fan Clutch [Re: 69suprbee] #1490732 08/26/13 01:03 AM 08/26/13 01:03 AM
Joined: Mar 2005 Posts: 493 Arizona A az426john mopar
az426john mopar A Joined: Mar 2005 Posts: 493 Arizona	The October 2013 issue of Mopar Collectors Guide on page 18 - 19 shows a new reproduction fan clutch assembly replacement for 2806070 being reproduced by Tony's Parts. (302) 398-0821 or www.tonysparts.com. If you go that route let us know how it goes.

Re: MP Viscous Fan Clutch [Re: PossessedDuster] #1490733 08/26/13 10:18 AM 08/26/13 10:18 AM
Joined: Feb 2009 Posts: 1,274 Ontario.Canada C can.al pro stock
can.al pro stock C Joined: Feb 2009 Posts: 1,274 Ontario.Canada	..an old timers' rule of thumb is to keep the fan an inch from the rad. ..are you sure you want to go closer..there can be some movement?

Re: MP Viscous Fan Clutch [Re: can.al] #1490734 08/26/13 03:54 PM 08/26/13 03:54 PM
Joined: Jul 2003 Posts: 6,167 Maryland GO_Fish master
GO_Fish master Joined: Jul 2003 Posts: 6,167 Maryland	I have read in the past that for best performance, the blade should not be more than 1/2 way into/ under the shroud. Scott B. "I'm a self-made man... I started with nothing, and I still have most of it!" 68 360 rusty B'cuda 'vert (GO Fish)13.59@ 98.72 mph 69 340 GTS stock 14.18@ 95.60 mph 01 5.9L Ram 1500 Quad Cab 4x4 01 3.5L 300M 16.23@ 86.97 mph

Re: MP Viscous Fan Clutch [Re: GO_Fish] #1490735 08/27/13 12:50 AM 08/27/13 12:50 AM
Joined: Dec 2007 Posts: 232 Alberta Canada PossessedDuster OP enthusiast
PossessedDuster OP enthusiast Joined: Dec 2007 Posts: 232 Alberta Canada	Not getting enough cooling at idle the car was up to 210 after coming off the highway. I need to try somthing so moving the fan closer to the rad is my first thought. Not sure what else to try.

Re: MP Viscous Fan Clutch [Re: PossessedDuster] #1490736 08/28/13 12:15 AM 08/28/13 12:15 AM
Joined: Dec 2007 Posts: 232 Alberta Canada PossessedDuster OP enthusiast
PossessedDuster OP enthusiast Joined: Dec 2007 Posts: 232 Alberta Canada	The clutch has 3/4" of room from the face to the rad. I am looking at clutches 2711 and 2705 but they offer only standard or severe duty. The problem is my fan says for standard clutches only. It looks like the one that Flex-alite and Bouchillon also sell right down to the sticker on it. What adverse effects would occur if I ran it on a severe duty clutch?

Re: MP Viscous Fan Clutch [Re: PossessedDuster] #1490737 08/28/13 01:10 AM 08/28/13 01:10 AM
Joined: Jan 2007 Posts: 7,664 IN A ahy master
ahy master A Joined: Jan 2007 Posts: 7,664 IN	The severe duty clutch may not release when appropriate with a "standard" fan. You may hear the fan spinning when not needed... making noise and burning gas while cruising, for example.

Re: MP Viscous Fan Clutch [Re: PossessedDuster] #1490738 08/28/13 03:07 AM 08/28/13 03:07 AM
Joined: Mar 2011 Posts: 1,655 Cut and Shoot, TX kentj340 top fuel
kentj340 top fuel Joined: Mar 2011 Posts: 1,655 Cut and Shoot, TX	"Why does my car run hot?" is an often asked question of muscle car magazine mechanics. These links are worth a read: http://www.hemmings.com/mus/stories/2013/01/01/hmn_tips2.html http://mydigimag.rrd.com/display_article.php?id=639876&_width= If you don't see two dolphins, you need a vacation.

Re: MP Viscous Fan Clutch [Re: PossessedDuster] #1490739 08/28/13 10:21 AM 08/28/13 10:21 AM
Joined: Jan 2003 Posts: 17,853 S.E. Michigan ZIPPY I Live Here
ZIPPY I Live Here Joined: Jan 2003 Posts: 17,853 S.E. Michigan	Quote: Is it possible to get the clutch only from anyone? Yes, it is possible, part number 4095704. There are a few of them on the locator. Have to mention, though, that it doesn't make sense to buy it because the price is considerably higher than the whole P4120758AB package. Rich H. Esse Quam Videri

Re: MP Viscous Fan Clutch [Re: PossessedDuster] #1490740 08/28/13 09:04 PM 08/28/13 09:04 PM
Joined: Jan 2007 Posts: 7,664 IN A ahy master
ahy master A Joined: Jan 2007 Posts: 7,664 IN	Quote: Not getting enough cooling at idle the car was up to 210 after coming off the highway. I need to try somthing so moving the fan closer to the rad is my first thought. Not sure what else to try. If it doesn't get much hotter than 210 I think its probably fine. Even 220 wouldn't be too bad hot idling as long as it cools down when rolling.

Re: MP Viscous Fan Clutch [Re: ahy] #1490741 08/29/13 01:24 AM 08/29/13 01:24 AM
Joined: Dec 2007 Posts: 232 Alberta Canada PossessedDuster OP enthusiast
PossessedDuster OP enthusiast Joined: Dec 2007 Posts: 232 Alberta Canada	Looking around locally for a 7 blade factory fan right now. With 3/4" clearance running the jag clutch I can afford anything much longer. Does anyone know the pitch of the viscous 5 blade and the stock 7 blade? Not sure how to measure my hayden fan.

Re: MP Viscous Fan Clutch [Re: PossessedDuster] #1490742 08/29/13 08:55 PM 08/29/13 08:55 PM
Joined: Nov 2004 Posts: 892 USA K krw71ragtop super stock
krw71ragtop super stock K Joined: Nov 2004 Posts: 892 USA	Quote: Is it possible to get the clutch only from anyone? I have a Jag clutch behind my Wizard rad but it's not in the shroud enough and a Hayden replacement one is too long. Car cools great while moving but the temps creeps up while idleing for an extended period. Think moving the fan in a bit will help. I played this game on my Duster a few years ago and found the MP clutch that comes with the fan was perfect length. Possessed, You have a personal message I sent last night. Check your in box !

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