Jim- glad you finally came to the same "puller" fan conclusion :D

This whole bimetallic is so bothersome, I'm glad I just did a 16-inch SPAL puller-fan on it's own thermostat.

Too bad I couldn't get the dual 11-inch puller fan to fit, I would have had 2800 CFM+ . . .

:-) neil
1988 360TE AMG
1993 500E

Now wait a minute,
 

I'm not going to add a fan just use what's there. It works, tnx to Ritter, quite nicely. I'll leave the fancy stuff to you.

Seriously, the puller vs the pusher is obvious once you start looking at the specs. Same fan as a pusher is about 70% as efficient as a puller. The reason is then obvious.

Better late than never . . .

Here are pics of the SPAL 16-inch puller fan on the 500E. Pictures are with and without shroud, and the Derale thermostat relay.

Yes, the puller fan is NOT centered to the shroud, because it will INTERFERE with the waterpump pulley.

More pics to come.

Enjoy,
:-) neil
1988 360TE AMG
1993 500E

http://www.silcom.com/~neilv/sportli...19-puller1.jpg
http://www.silcom.com/~neilv/sportli...er2-shroud.jpg
http://www.silcom.com/~neilv/sportli...thermostat.jpg

Looks great!
 

Nice clean installation. Where's the temp sensor mounted?

We forget how big the stock fan blades are. Even with the 16" SPAL mounted, there's still some extra room.

Your car is now updated to 1999(?) and later, where the fan has been permanently removed. When I saw one, I told Pat (Exclusive Motors), " . . . they forgot the fan"! Funny to look and not see one.

The temp-sensor is an independent element that is "pushed" into the radiator core with heatsink compound.

I've been contemplating replacing the stock water sensor with the dual pole sensor used in the 1995+ W202 M104 engine, and if the values match up using this to provide the temp to the relay . . .

I'll post more pics later.

:-) neil
1988 360TE AMG
1993 500E

More pics:

1) better view of mounting;
2) wiring harness ends utilizing factory connectors;
3) closeup of the waterpump pulley & puller-fan motor & why they had to be off-centered;
4) closeup of the temp probe with heatsink grease;
5) closeup of the AMG M104 waterpump and puller fan (very tight clearances- could have kept shroud but not needed)
6) picture of the AMG M104 with puller fan;

:-) neil
1988 360TE AMG
1993 500E

http://www.silcom.com/~neilv/sportli...3-mounting.jpg
http://www.silcom.com/~neilv/sportli...-connector.jpg
http://www.silcom.com/~neilv/sportli...-waterpump.jpg
http://www.silcom.com/~neilv/sportli...ler2-probe.jpg
http://www.silcom.com/~neilv/sportli...04-puller1.jpg
http://www.silcom.com/~neilv/sportli...-enginetop.jpg

Nice pics!
 

#4: I think that's the right place to mount the temp sensor: off to the side to measure the 'flowing' coolant temp, not the coolant temp near or close to the fan. That position gives a truer profile of the coolant temp.

#5 & #6: That's tight clearance!

Pro workmanship!

Excellent
 

Neil , It looks great. Total cost to do this set up. I am close to putting mine back on the road and at this would be a good time to make the change.
Alan

BeCool Fan: $190
Derale Adjustable Thermostat: $40
MB Connector & Pins: $2.00
Labor & Wiring: 2-3 HRS

BTW: I'm looking at using a MB double temp. sensor that has the SAME resistance curve as the stock water-temp sensor, plus it will replace the Derale's external (in-the-radiator-fins) temp sensor.

More to come. . .

:-) neil
1988 360TE AMG
1993 500E

How many of you are interested in a new BMS?
 

Need to get a head count of how many would be interested if it we do this?

It appears as though it can be done! But I don't know what the costs will be. My thinking is to purchase 100 pieces or more depending apon interest.

Believe it or not there's at least two (2) companies interested. Still in the 'getting parameters' stage, but it appears encouraging!

Any takers???

I would purchase 10 of them off the bat if the price is reasonable.

I worked on a 2003 SL 500. Customer complaint was fan to loud,sounds like its going to take off like an airplane. When changing this fan. Its cool. The whole fanshroud,motor and motor control are all in one. Its was a cool set up. If was a huge like 16-18 inches. This would be exactly what we need.


I will try to find in in the warr return parts and take a pic of it. I bet it would almost bolt to our 500's. Most of MB radiator mounting and set ups are pretty similiar in design.

See ya Guido

BMS
 

JIMF- Count me in for one BMS. At what temperature would it be set to engage the fan clutch? I'v

BMS
 

At what temperature would your new BMS disengage the fan clutch?

I would do the modification to my existing BMS with the double nutted screw, but my concern is that the fan clutch should not be engaged at freeway speeds, unless radiator temperatures really called for it. There would be some horsepower loss in driving the fan. Engagement over about 2000 RPM should not be necessary when car speed is over say 45 MPH. Air flow thru the radiator at these speeds should be enough for most "pedestrian" driving in San Diego weather, without the need for the fan clutch to be engaged. Do you agree?

I've put together a . . .
 

web page describing the VFC mod showing the mods to the bms.
Click the "www house" icon below and check out menu #19. There's a section describing what would be the a more 'perfect' bms temperature.

Also check out Menu #20 for test of the newer Sachs vfc.

Re vfc engaged at freeway speeds: There's no harm in engaging the vfc at any speed other than the loss of some horsepower (not sure about that but is reasonable) and some additional air noise due to the turning fan blades.

Re vfc engaged over 2000rpm and 45mph: I would tend to agree with you but the cutout rpm is not able to be changed. It's fixed around 3200 rpm. Nor is the vehicle speed a factor. That also would be nice.

I went to LA last weekend with a full car of people, A/C on, and it was up to the high 80s. Went at freeway speeds and then into stop/go traffic. That mod along with my Cool Harness, kept the car at 90 or below. Other than some fan noise (apparent outside the car) it was great.

PS: haven't heard from the companies interested in making the new bms. Will advise when I do.