I am replacing the fan clutch on my 1984 300d my fans are plastic, i dont feel as if the fan is blowing hard at all and car is overheating, i have picked up out of another w123 turbo a metal fan, the clutch looks different, is it better to use a metal fan or should i swap into the plastic fan the clutch from the metal fan even they look different?
thanking you guys in advance everytime

My vote (and what I use) is for the plastic fan...FWIW

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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

I would vote for that as well, with the appropriate clutch.

Can you provide the part number for the plastic fan clutch?????

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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

Here are the two different clutches, do they both fit either fan?
plastic nine blade with no good clutch was the stock on my 84 300d, the metal fan with larger looking clutch came out of car from the yard i believe it was an 82-83.
have to look up part numbers see if they are visible, i do see the metal one has a part number not sure on plastic.

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Just to be clear, the fan clutch is not plastic; it's a metal clutch intended for use with the plastic fan. Part #000-200-19-22.

I wanted the part number for the lightweight plastic clutch....

__________________
Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

Thanks,

Man you don't miss a thing!!!!!!!!

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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

I dont see any part number on the plastic one, guys have any idea if i can use the clutch on the metal fan inside the plastic, both have 4 bolts.

Can you? Yes.

Should you? No.

A metal fan with the correct clutch is a far better choice than a lightweight fan with a heavy clutch. Lightweight fans don't work so well when they overspeed and suffer blade separation.

Many thanks for that input Querty!!

The plastic blade and clutch are superior.


.

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ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
1984 190D
2003 Volvo V70
2002 Honda Civic

https://www.boldegoist.com/

Having experienced several of these metal blades fracturing, plastic is better.

The plastic blade typically moves more air for better cooling.

.

__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
1984 190D
2003 Volvo V70
2002 Honda Civic

https://www.boldegoist.com/

You are a little confused.

Kindly note that I had already recommended the plastic fan.

What I recommended against is mismatched fans and clutches.

My early 220d had an eight bladed metal fan and (failed) clutch, which were original to the car. I replaced them recently with a plastic 6 bladed fan and no clutch (similar to what is done on many 240Ds). At highway speeds (50 mph+), the cooling is actually better with a six bladed plastic fan fixed to the engine than with a free spinning metal fan. So it is a little off topic, but I guess I am saying that fans still play a role in cooling our engines, even at reasonably high speeds.

I also wanted to point out that the plastic fans on 240s are designed to always spin at the same speed as the engine, so they are clearly able to spin fast without coming apart.

Has anyone tried getting rid of their fan clutch on a 300D, 300SD? The max rpm on those engines isn't much different than on the 220d, 240d engines, so it isn't clear to me why a fan fixed to the engine wouldn't work. The clutch on my 220D fan is $180, so abandoning it saved me a lot of money. And i now have a more reliable system.

Perhaps there is an increase in fan noise without a clutch, but my car is so noisy on the highway that I cannot tell a difference.

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1968 220D, w115, /8, OM615, Automatic transmission.
My 1987 300TD wagon was sold and my 2003 W210 E320 wagon was totaled (sheds tear).