1992 W140 300SD Rebuild
08-20-2019, 02:04 PM
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2014 GL450, 1992 W140 300SD, 1993 W140 300SE, 1987 E30 Convertible
1992 W140 300SD Rebuild
Some time ago i purchased W140 300SD off eBay. In spite of seller promises car came in not so good mechanical conditions so as a MB fan i decided to did complete rebuild on. Just want to show you progress done on it
08-20-2019, 02:09 PM
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2014 GL450, 1992 W140 300SD, 1993 W140 300SE, 1987 E30 Convertible
Cylinder head overall ok. Carbon buildup. A dent in 6th cylinder sealing surface - from someone working on engine before.
08-20-2019, 02:14 PM
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2014 GL450, 1992 W140 300SD, 1993 W140 300SE, 1987 E30 Convertible
Cleaning aluminum components. I used Simple Green Extreme Aircraft and Precision Cleaner. Soaking in 1:1 diluted for couple days. No etching or aluminum damage.
08-20-2019, 02:17 PM
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2014 GL450, 1992 W140 300SD, 1993 W140 300SE, 1987 E30 Convertible
Cylinder head resurfaced in machine shop. Didn't like conditions of valves, replaced with fresh set of new ones.
08-20-2019, 02:21 PM
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2014 GL450, 1992 W140 300SD, 1993 W140 300SE, 1987 E30 Convertible
Engine block had minimum wear. Ended up honing cylinder surface with Flex Hone and painting block in yellow.
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08-20-2019, 02:25 PM
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2014 GL450, 1992 W140 300SD, 1993 W140 300SE, 1987 E30 Convertible
Grinded crankshaft to first repair oversize +0.25. Overall grind work clearance within factory specs.
08-20-2019, 02:33 PM
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2014 GL450, 1992 W140 300SD, 1993 W140 300SE, 1987 E30 Convertible
Replaced connecting rods with newer version and purchased new set of pistons. Had to do some machining on pistons to fit newer thicker connecting rods.
Last edited by arsupisemnet; 08-20-2019 at 02:36 PM.
08-20-2019, 02:47 PM
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2014 GL450, 1992 W140 300SD, 1993 W140 300SE, 1987 E30 Convertible
Complete rebuild of transmission. Installed transmission valve kit for diesels. Not noticeable shift between 1 and 2. Put new brake bands. Replaced brake band piston with automatic adjuster from newer model.
08-20-2019, 02:56 PM
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2014 GL450, 1992 W140 300SD, 1993 W140 300SE, 1987 E30 Convertible
Engine running. Next step planned as follow:
1) Install electric fuel lift pump.
2) Install larger turbo (i have stock one, which i rebuilded as well)
3) Install larger plungers into inline fuel pump.
1) Install electric fuel lift pump.
2) Install larger turbo (i have stock one, which i rebuilded as well)
3) Install larger plungers into inline fuel pump.
