That's odd as I have seen rust buckets BUT no rust under the battery tray in the junk yard ... lol So, excluding under the tray, a rust free / wreck free survivor ...

Indeed odd, I don't remember a time when I didn't see any rust. And I pulled a lot of solid trays for the taking.

__________________
1983 123.133 California
- GreaseCar Veg System

I braved the heat today, but only lasted maybe 1 1/2 to 2 hours max. Soaking wet, even in the AM in my garage.

Decided to install the Electric Water Pump as this engine is most likely going into my fuel sipper project.

Pretty straight forward swap over.

Many thanks to a S T D dot com forum member who did another fantastic job welding for me. He takes on my looney projects, never complains, does excellent work and for cheaps. This was NOT an easy weld job with weirdo angles, et cet all done to mimic the original set up. And, about perfect. I am thinking the housing 2.0 will have that plate welded on since that will get rid of another gasket and possible fail point.

Hopefully tomorrow I will be motivated to hit the garage around 6 AM to install the electric water pump and then figure out an elegant manner to run the wires, et cet.

Here is the modified goosneck

Attached Thumbnails

       

Here's the modified water pump housing.

Attached Thumbnails

     

Cleaned up block area and parts going back on ...

Attached Thumbnails

         

Finished the mechanical parts install. EWP tomorrow I hope.

When the mechanical water pump is removed as well as the mechanical vacuum pump, there's tons of room up front for other goodies, e.g., all aluminum radiator with electric fans and shroud, inter-cooler, et cet. The same goes for the turbo 5 cylinder engine, OM617.9XX.

Attached Thumbnails

   

Thank you for the accolades, Mark! Glad to see that everything fits properly and as intended. Yes, there were a few challenges..lol. But, I like the challenges.
Im on BW and the 500e Board as well...7 delta.

Here's the actual EWP from Davies-Craig.

It's mounted (temporarily). The passenger side trans line will need to be replaced. Too tight quarters plus its about dry-rotten so cannot move it much. Other wise, its in place and all is well so far. And, installing my Getrag 717.400 five speed manual shortly so those lines will be gone anyway ...

Next step is wiring it up. Before doing that, plan is a 2-3 day coolant flush. After that, it's maiden voyage .... plus finding a much smaller alternator belt ...

Attached Thumbnails

         

Seems to me you're going backward in terms of efficiency. Converting mechanical energy to electricity and then back to mechanical energy to run a water pump? If the electric pump runs all the time like the mechanical pump, especially when driving around, then you are going to use a little more fuel, not less, because of the inefficiencies and losses going from mechanical to electric and then back. In addition, now you've got more wiring (more weight) and more complications? What am I missing?

__________________
Respectfully,
/s/
M. Dillon
'87 124.193 (300TD) "White Whale", ~392k miles, 3.5l IP fitted
'95 124.131 (E300) "Sapphire", 380k miles
'73 Balboa 20 "Sanctification"
Charleston SC

Looking at max of around 170 watts however, once you're driving over 35 MPH, probably down to around 60 watts as compared against spinning a fan and spinning a mechanical water pump. There really isn't any comparision, not even close. Plus, you're spinning a fan and mechanical water pump and it increases as you increase the RPM whereas the EWP actually works less hard the faster you go. So, I think you have it backwards. Plus, talking about weight, again not even close when weighing just the mechanical water pump against perhaps maybe a pound. The mechanical force to spin that fan I understand is around 5 HP and I am guessing that pump has to be a few HP as well. I am already spinning an alternator so I cannot see how the extra wattage is conceivably close. And, the "conversion" of mechanical spinning to stored electricity and its usage is what again?

Below is a very general rule of thumb although I doubt it is directly on point. I know the idle was high post conversion which tells me there is less parasitic drain on the engine.

https://www.google.com/search?q=how+many+horse+power+is+100+watts&oq=how+many+horse+power+is+100+watts&aqs=chrome..69i57j0. 7060j0j8&sourceid=chrome&ie=UTF-8

Don't get me wrong, I think the EWP is an innovative way to look at heat transfer but I don't understand why you went that route.

I removed the clutch fans on both my 280C and my 250C and am using electrical fans for cooling. Any additional "draw" by the increased power need is limited to the actual time the fans are engaged.

I don't think the original water pump has as much of a parasitic drain as you are calculating but I've been wrong before.

Keep us in the loop. Nice to see innovations.

__________________
“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now

A typical alternator is about 55% efficient at converting the mechanical energy of the motor to electrical power. A typical DC electric motor is less than 90% efficient, and that is only when it is operating at 75% load (motor efficiency goes down as the load is reduced).

__________________
Respectfully,
/s/
M. Dillon
'87 124.193 (300TD) "White Whale", ~392k miles, 3.5l IP fitted
'95 124.131 (E300) "Sapphire", 380k miles
'73 Balboa 20 "Sanctification"
Charleston SC

It has been a while since I posted, but clearing out stuff (again), getting organized (again), and focused (again).

Got this engine from NGARover back in February I believe.

Last Saturday was our first day below 90F and below 90% humidity, so I pressure washed it, painted it, and now doing just the R&R / Maintenance.

Found around 1" or slightly more heavy tar / goo in the sump of the oil pan but everything else looks really clean. So, you got me. NGARover said this was a great running engine and he had a video on YouTube.

Sending off the turbo today or tomorrow for a rebuild and some tweeking. Otherwise, I found everything stashed in my garage to finish the engine and all R&R. This engine is being mated to a 5 speed manual Getrag 717.400 I have under my bench.

Attached Thumbnails

       

Some of the delicious black gooey goodness ... My hopes are to re-use the oil pan. It didn't seem banged up or distorted.

And, the rubber pickup was totally shot. Did not form any seal around the aluminum housing as it just barely caught the lip but would fall off it you touched it. So, fortunately I had a few spares ...

Pan operations are in play tonight if it goes below 90F by 10pm

Attached Thumbnails

   

Mmmmmmm.......sludge. My SDL did the same thing from sitting 10 years. It was nasty. Before I got the car going, I took the side pan off and cleaned all that goop out. I'll never forget the smell! Yuck!

__________________
Current stable:
1995 E320 157K (Nancy)
1983 500SL 125K (SLoL)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

Gone and wanting to forget:
1985 524TD 167K (TotalDumpster™) [Definitely NOT a Benz]