I had a mechanic save me some junk fan-clutches for guinea pigs in an experiment.

One of them is much thicker and heavier duty; still good as new, by the way.

This heavier unit is a 2nd Gen. fan-clutch.

It will fit the threads on the 1st Gen. engine.

The 1st Gen. fan will bolt on.

I see no reason why these superior units could not be used as an up-grade on the 1st Gen. engines.

Has this been tried before ??

Will it work ??

Will it work better ??

Thanks.

 

Sounds like you're the guinnea pig Bear!

 

The part numbers for it are in the early part of the sticky above, but heres the link anyways

https://www.dieseltruckresource.com/...n&onlynewfaq=1


Go to the bottom of the page, and there is quick explanation of it.............................. there is two problem here.
First the part number for fan 52026653 module- 52028760 are not right.

both part number are suppose to have "26" or "28" in then, I can't remember.

The 2nt problem is if you have a 89-91.0. Fan shroud. It is to small for the 2nt gen fan blade(I tryed it)

Will it work ??.... 91.5-93 Yes

Will it work better ??..... Yes ,stronger fan blade, better fan pitch and a tighter fan clutch?

I Have hered of first gen tossing a fan blade before(I thing it was mostly the non intercooled) so puting the "small" first gen blade on a 2nt get hub or module..........Well i chicken out.

Im not trying to stop you form being the "guinnea pig" Just adding some info to the pot.


Flash.

 

BK, I'm confused. I thought according to you the only good solution to the fan clutch issue was pinning it?

 

My old '92 tossed a fan, one blade broke right off! Replaced both pieces(fan and clutch) with a 2nd gen unit. Did not notice any increased cooling nor did I have any problems.

 

YES, pinning is thus far my favorite fix.

A solid direct-drive hub would be my preference.

The junk clutch-hubs are for experimenting with improving my pinning techniques.

I just wondered if using the 2nd Gen. hub would be a workable option for those that were hesitant to pin the clutch, but were having issues with the stock version.

The 1st. Gen. blades will bolt to the 2nd Gen. hub.

 

How does the 2nd Gen. blade differ from the 1st ??


Does the 2nd Gen. clutch make any improvement in A/C at idle speeds ??


One of the most common complaints I hear against fan-clutches in general is many fail to draw enough air through the A/C condensor at slow ground speeds and when idling, thus causing poor A/C performance.

 

I now that they lock.......or slip less at top rpm and the change of the fan blade pitch, tend to direct the air out and around the motor instead of at it.
I never notised.....or payed any attention to idle flow, as this is not my problem.

Just some simple evaluation that i have noticed with a early 2nt gen and our first gens.


Flash.

 

Please explain "pinning" to me. I may be slow, I just don't know what you are talking about. Thanks.

 

Back in the good old days, all fans were direct-drive, having no troublesome clutch mechanism.

In the absence of a direct-drive fan hub, a failing fan-clutch can be mechanically locked, thus making it turn at engine speed at all times, just like direct-drive.

To "pin" a Dodge/Cummins fan-clutch, I drill/tap 5/16x18 holes through the open-sided hole/pockets that are molded in the forward side of the aluminum housing.

I thread bolts of appropriate length into these holes, pressing the internal clutches against the aft wall of the housing, thus locking the mechanism.

Some claim that a constantly turning fan robs power, and I will not argue the hair-splitting scientific side to that.

The way I see it, anything that can take fifteen big Charolais cows up Russell Creek Hill in road gear, is not going to notice a little old fan going along for the ride.

Also, when you are calling on the engine's power the most, the last thing it needs is to overheat due to a slipping fan-clutch.

 

Gotcha. I am having the problem of a locked up fan clutch. My truck wasn't getting over 145* unless I was lucky, so I pulled the thermostat and the rubber seal was keeping it stuck open. I pulled the seal and now it heats up like it's supposed to. Now just to get a new fan clutch, fun fun. Sorry to get off the topic.

 

Has anyone ever seen or tried this dodge p/n 52028440, its a 9 blade fan from a B3500 van with heavy duty cooling. Pricing is from chrysler parts direct. It looks like it might work. I just don't know on the diameter.

Applications are:
FAN BLADE, Full Size Vans, w/Max Cooling - 3.9L 1996 - 2003
FAN BLADE, Full Size Vans, w/Max Cooling - 5.2L, 5.9L 1996 - 2003
Cooling - Cooling fan - Fan blade - W/heavy duty W/heavy duty 1994 - 2003
52028440 $58.75 $0.00 $47.59