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-   -   Ditching the clutch fan (http://www.peachparts.com/shopforum/diesel-discussion/301328-ditching-clutch-fan.html)

aaa 07-02-2011 06:10 PM

Yes. Maybe I'll remember to post pics a week or so from now.

You know I've forgotten what the original shroud looked like, so I'm not sure if the gap is any different from the clutchfan. The 240d fan comes with a big spacer on the pulley so my hunch is they're not terribly different in terms of gap between the fan and radiator.

1980sd 07-02-2011 07:10 PM

Would I still need an AC fan if I had a big CFM puller?

compu_85 07-02-2011 07:15 PM

I'm planning on ditching the fan clutch and dual pusher fans on my SDL and going with the large electric puller fan from an W210 E320. I'll do some tests to see if it helps with AC around town. The way the late W126 is set up all the air for the radiator has to flow through the two small pusher fans: a shroud blocks the rest of the condenser.

The clutch fan does ok, but there is a lot of air leak around the shroud (required because the engine moves around). I'll install a temp switch into the rad to kick the fan onto the 1st speed and use the stock 2nd speed switch on the thermostat housing. Having the compressor clutch on will turn the fan onto the 1st speed, and the high pressure switch will kick it onto 2nd.

-J

Stretch 07-03-2011 02:30 AM

Quote:

Originally Posted by leathermang (Post 2745584)
" IF I KEPT MOVING " certainly... but counting on not being in any traffic situations all the way home.... suspiciously optoMYSTIC....

Hee hee - you've never seen me drive have you?

Besides I can sit in traffic for most of the year without a fan where I live no problemo - only for the trip to the South of France did I consider buying an electric replacement.

Marvelicious 07-03-2011 03:04 AM

Quote:

Originally Posted by leathermang (Post 2745388)
I think that is way short sighted..

You remember a member getting home from many states away after an electrical failure in his system.... he was only able to do that because he had the mechanical fan in place.... he would leave the car idling at night... while at motel....and drive all day with no problems not having electricity..... having only electrical fans takes away that option.... as unusual as big electrical failure is.... it is like not carrying a spare tire just because tires are so good these days...

I've got a buddy who made it home 350 miles in a gasser with a dead alt by buying a couple spare batteries. Seriously, if you're at the point where letting the car run all night is your solution, you are ready to adapt to any possibility!

At some point, the low-tech is more reliable excuse becomes a little unrealistic to me. For example; if the guy had an old school hand crank instead of a starter, he wouldn't have needed to run all night... :rolleyes:

Stretch 07-03-2011 06:06 AM

Quote:

Originally Posted by Marvelicious (Post 2745851)
...
At some point, the low-tech is more reliable excuse becomes a little unrealistic to me. For example; if the guy had an old school hand crank instead of a starter, he wouldn't have needed to run all night... :rolleyes:

True true!

Or a manual gearbox and a hill or a manual gear box and a big old strong ox of a wife!

leathermang 07-03-2011 08:08 AM

Quote:

Originally Posted by Army (Post 2745859)
Or a manual gearbox and a hill...

JimSmith tells of doing that as a regular starting method during college...

leathermang 07-03-2011 08:13 AM

Quote:

Originally Posted by Marvelicious (Post 2745851)
.... Seriously, if you're at the point where letting the car run all night is your solution, you are ready to adapt to any possibility! ...At some point, the low-tech is more reliable excuse becomes a little unrealistic to me.

Because Diesels use only 1 / 80th the fuel a gasser does to idle... in many places with cold weather ...like ski resorts and motels ...you see pictures where the snow is melted under the cars due to them being left on overnight...
A hand crank on a Diesel is not realistic... but a ' prewarmed' Diesel .... PRICELESS.

GregMN 07-03-2011 09:53 AM

My 190E has not had a any fan since I installed the 2.2 about 4 years and 40,000 miles ago.

I have driven it in stop and go traffic and the temp gauge does not move beyond it's normal driving range (80C - 90C).

The radiator in the chassis is for a 2.6 gasser.
There is no A/C running.
I cannot recall driving it when the air temp was in the 90's.
MN does not have many mountains.


Quote:

Originally Posted by 1980sd (Post 2745610)
One of the things I like about diesels is the ability to run without anything but fuel...

Fuel..... and crankcase oil, and coolant, and air.

kerry 07-03-2011 09:59 AM

My 409d with a 617NA had an aftermarket electric fan when I bought it and no engine fan. Air flow was inadequate for climbing western mountains in the summer. Engine fan fixed the problem.

ah-kay 07-03-2011 12:16 PM

I do not understand.
 
Quote:

Originally Posted by leathermang (Post 2745388)
I think that is way short sighted..

You remember a member getting home from many states away after an electrical failure in his system.... he was only able to do that because he had the mechanical fan in place.... he would leave the car idling at night... while at motel....and drive all day with no problems not having electricity..... having only electrical fans takes away that option.... as unusual as big electrical failure is.... it is like not carrying a spare tire just because tires are so good these days...

Why he would leave it running all night without turning off the car? Either he is a prophetwho knew the car would not start once it was off or it was started with help of others and he was too chicken/would not like to do it again. It does not make sense to me.

My 190D has an electric clutch fan and I rarely, if at all, see it turning on. Removing the clutch fan would not pose a problem if it was done right. The last resort is to turn on the heater fan and turn the heat on full blast. I did it once from PHX to SAN when the radiator crapped out and the temp was 100F. There are many means to get home if you improvise.

kerry 07-03-2011 12:20 PM

Quote:

Originally Posted by ah-kay (Post 2745986)
Why he would leave it running all night without turning off the car? .

Because the battery was dead??????

1980sd 07-03-2011 12:51 PM

Quote:

Originally Posted by compu_85 (Post 2745657)
I'm planning on ditching the fan clutch and dual pusher fans on my SDL and going with the large electric puller fan from an W210 E320. I'll do some tests to see if it helps with AC around town. The way the late W126 is set up all the air for the radiator has to flow through the two small pusher fans: a shroud blocks the rest of the condenser.

The clutch fan does ok, but there is a lot of air leak around the shroud (required because the engine moves around). I'll install a temp switch into the rad to kick the fan onto the 1st speed and use the stock 2nd speed switch on the thermostat housing. Having the compressor clutch on will turn the fan onto the 1st speed, and the high pressure switch will kick it onto 2nd.

-J

That's pretty much my plan. I have a 116 so a cross-flow radiator would also be an improvement. My rad. is in really good shape but if it gave me an excuse... Oil cooler would have to be addressed...

Custom aluminum cross flow rad.

http://www.streetrodstuff.com/Products/157/

About $450 with shipping...

leathermang 07-03-2011 03:02 PM

Quote:

Originally Posted by ah-kay (Post 2745986)
....Why he would leave it running all night without turning off the car?.....

He had a total electrical failure... but since a diesel does not need electricity once it is running... only fuel..and air.... he was able to make it across multiple states to his home. I am pretty sure it was a 5 cylinder....thus had automatic transmission.... thus could not just park on a hillside for start the next morning...

okto 07-03-2011 03:58 PM

Quote:

Originally Posted by GregMN (Post 2745914)
Fuel...and crankcase oil, and coolant, and air.

Well, air's free, and in a pinch, so is coolant. :P


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