Wouldn't some heavy duty duct-tape along the crack seal it up? Just adding some red-green style ideas....

Personally I'd probably use JBweld....it seems to work on anything from our experiences here.....smear a layer of it across the crack, then spray paint it chrome or something (once it has long-dried)

__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

Try www.car-part.com
You might even find a place near you that will have it and save shipping charges.

__________________
Sam

84 300SD 350K+ miles ( Blue Belle )

Mine is too!!! Same crack. Must be a weakness of design. Mine's not leaking oil though. I didn't do anything to it.

John in San Antonio

__________________
John Hughes, was in Landstuhl, Germany but currently in San Antonio, TX


1978 280CE Astral Silver now 59,xxx miles and counting "Silber-Kugel"
1986 300E Black Pearl Metallic 143,xxx miles 5-spd daily driver w/ blk leather "Schwarz-Schönheit"
1989 190E 2.6 (euro) 5-spd Desert Taupe 112,xxx kms Had to leave behind in Germany!!! "Helga"
1983 300D Pastel Beige now 312,xxx + miles SOLD

OBK#24

I think MBz specifications call for torqueing the bolts on the valve cover relatively lightly, like 11 ft-lbs. Overtightening or tightening unevenly could cause distortion leading to a crack, especially in a piece of old aluminum.

They are not too hard to find in junk yards or on Ebay.

__________________
Der Panzermann und Fraulein Fahrvergnuegen

1991 420SEL 201K "The Big Blue One"
1985 300DT 205K chassis/285K engine nee California emissions "Goldbug"
1983 300TDT 255K "The Womble"
1983 300 DT 214K "Sea Sprite"-Rear-ended a truck
1983 300SD 285K "The Donor" Gave his life so that others can live
1980 500SL Euro 105K "Der Panzer"

Ahhh.. car-part was the site I remember.

My valve cover crack seemed only to be seeping a tiny bit of oil. I JB Welded it last night, and found another crack after cleaning the rest of the valve cover. Argh.

What years/models can interchange with the '84 300D?

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==========================
Aaron
'84 300D 267,000 - Running WVO - Rice Bran Oil - Mmmmmm, fishy...
==========================

I'm pretty sure the valve cover from all the 617's will fit, excluding one from a wagon engine with the leveling pump, not sure on that, maybe it would. Anyways, probably almost all 617 valve covers. At the very least any cover from an engine in a 1980-85 300SD, 300D, 300CD or 300GD

__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

So then what's up with my buddy's '84 300SD having this weird black box on top of his valve cover? I think it has those transmission/vacuum related doodads in it. Is mine supposed to have that?

__________________
==========================
Aaron
'84 300D 267,000 - Running WVO - Rice Bran Oil - Mmmmmm, fishy...
==========================

It's easy to replace those parts with those off of your own engine. As far as I know, all the valve covers from turbos (and I think the 617 non-turbos), including those from the 300TD with level control, should be interchangable. I KNOW FOR CERTAIN that the one from a 1985 300D is interchangable with that from a 1983 300SD.

__________________
Der Panzermann und Fraulein Fahrvergnuegen

1991 420SEL 201K "The Big Blue One"
1985 300DT 205K chassis/285K engine nee California emissions "Goldbug"
1983 300TDT 255K "The Womble"
1983 300 DT 214K "Sea Sprite"-Rear-ended a truck
1983 300SD 285K "The Donor" Gave his life so that others can live
1980 500SL Euro 105K "Der Panzer"