what fan can I use to replace my viscous fan clutch? I prefer to have a standard mechanical fan that will bolt on directly.

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1990 190E 3.0L

How about factory parts? Only problem with them is they're expensive...

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

refill the fan if you are in a pinch and the bearing is good (no wobble or screech) dont skimp on the fan as you require it.

You can also install an electric fan and separate controller to run it variably. But its cost is quite high for the full setup

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

no fan,and running electric can save up to 12 hp,on some motors.changing all of mine to electric

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

I intend to change mine for electric... for the $300 it costs to replace the 603 fan I think I can get something nice going.

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

I just want a good mechanical fan, don't really care about hp or electric, just don't want viscous fan

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1990 190E 3.0L

OK use a flex fan from JEGS Performance Auto Parts - Holley - Billet Specialties - Edelbrock - MSD - Moroso - Mr Gasket

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

Ha! The cost of upgrading to an electric fan, plus the work in mounting it and running the wiring, the visco fan isn't looking so bad after all. I'll just tighten it up tomorrow so it runs as a regular mechanical fan. Cheers everyone!

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1990 190E 3.0L

I tried replacing the visco clutch with a bolted on fan on my '71 220 (115 chassis). The fan noise was ridiculous so I swapped it back.

All mechanical fans have the viscous clutch. You could probably fabricate a piece if you just want to hard-couple it to the engine, but I've never seen any pre-made items. I recommend just getting a Meyle replacement and moving on.

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Prost!

the fan blade wheel is not designed to spin up to high rpm, the visco clutch is there for 2 jobs,

one to freewheel when the clutch is cold and then to freewheel at high rpm even when the clutch is hot. You do not want it blowing apart at high rpm and take out the radiator etc.

So do not lock it. If you are on a budget proceed to a hobby store and get some RC diff fluid about 8000 wt and fill about 5 or 8 cc and test again.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

^^Agreed.

Worst case, the blades can break and fly off..

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http://farm8.staticflickr.com/7271/7...144c3fc1dc.jpg

I have read somewhere that fans are balanced? I.e. you have to mark them before you remove it like you would a driveshaft?

Just wondering, because the above conversation makes me think these are not balanced. I.e. you can buy a new fan blade and pop it on.

Food for thought. If you replace the viscous fan with an electric fan, you won't gain HP or MPG. If the fan is off, there is little load on the engine. If the electric fan is on, the alternator has to supply the power to run it. Believe me, for the same air flow and cooling the viscous fan puts less load on the engine than the electric fan. If the electric fan used less power for the same output then you are getting something for nothing. Ain't going to happen.

Paul

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84 500 SEL (307,xxx miles)

Yes, but an electric fan can be shut off completely whereas the visco fan is always taking some power. Plus you can get better control of it and only run it when it needs to run.

-J

__________________
1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.