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#1
08-19-2007, 08:43 PM
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What motor is this in my 1991 350SD
According to the board, the 350SD never came with a diesel with a black valve cover. Can't figure this out. The car has 91k miles and seems perfect.. Any ideas? What motor is this..... It burns clean, uses NO OIL!!!!
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#2
08-19-2007, 08:47 PM
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Looks like a 603 with a painted or coated valve cover. Is the finish smooth?
__________________
Andrew 1989 Volvo 745- 202K
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#4
08-19-2007, 09:18 PM
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Weird- they are usually pretty smooth. I bet if you take it off the underside will be the typical aluminum color. I do like the look, though- the black is different.
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Andrew 1989 Volvo 745- 202K
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#5
08-19-2007, 09:32 PM
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Probably the 3.5 liter with a dark valve cover. Can't tell what the engine is without looking up the block #. The color of the valve cover doesn't matter.
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1987 300SDL (324000) 1986 Porsche 951 (944 Turbo) (166000) 1978 Porsche 924 (99000) 1996 Nissan Pathfinder R50 (201000)
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#6
08-20-2007, 07:04 PM
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The engine number will be stamped in the top of the block, roughly near where the fuel filter bracket bolts to the block and/or head. Probably something like 603970-12-123456. Looks like the original engine to me. If it uses zero oil, I'd take it apart and replace the rods with the updated type, before it starts ovaling out the cylinder bores...!
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#7
08-20-2007, 08:14 PM
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Yikes!
Tom W
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.  [SIGPIC]..I also have a 427 Cobra replica with an aluminum chassis.
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#8
08-20-2007, 08:32 PM
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Looks like someone did a horrible job of painting the valve cover.
Mines currantly polished, but I want to get it powdercoated eventualy. Looks like they replaced the bolts with black allen heads too, I did the same thing. Looks much cleaner than the old 10mm hex heads.
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1999 SL500 1969 280SE 2023 Ram 1500 2007 Tiara 3200
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#9
08-21-2007, 11:31 AM
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WOW, that car looks like it's been converted to 134a freon... sad.
Hatt, how can you tell from that pic the BOLTS were changed? not enough detail for me, but they look like hex bolts to me. a better pic would be needed to tell what else was done when they painted the cover. probably used the crinkle coat paint from auto parts store or wally world...
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!!  1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#10
08-21-2007, 12:42 PM
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Quote:
__________________
1999 SL500 1969 280SE 2023 Ram 1500 2007 Tiara 3200
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