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#1
11-27-2006, 03:32 PM
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1984 SEC question.
I just purchased an 84 SEC euro with about 130K miles, with maintence records from day 1, The PO told me the engine is finished.
Are there any tests I can do to determine if the engine is good, (compression test) etc. If worst case scenario the engine timing chain jumped what parts can be saved. (whats worth keeping) No water in oil, haven't had a chance to try to start the car yet.
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1984 Euro 300SDC, (4spd standard) 1986 Toyota Landcruiser Diesel HJ60 5spd X2 Gone but not forgotten (some sold, some stripped) 1983 300 SD, 1985 300 SD, 1983 240D, 1986 300 SDL, 1985 300 SDL, 1983 300 D, 1984 300 D, 1985 300SD, 1987 300 SDL, 1983 300 SD, 1985 300 TD Euro, 1983 380SEC, 1990 300 D, 1987 300D, 1982 300D, 1982 300D, 1994 E420, 1987 300 TD, 1987 300 D, 1984 300 D 
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#2
11-27-2006, 03:41 PM
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make sure the chain isnt broken first then, verify correct timing. only then can you do your compression and leakdown tests. If the chain jumped and bent valves are the only problem, they're not that bad to do. If the car was overheated badly on the other hand.... find another engine.
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 1980 500SE/AMG Euro 1981 500SEL Euro 1982 380SEL 1983 300TD 1983 500SEC/AMG Euro 1984 500SEC 1984 300TD Euro 1986 190E 2.3-16 1986 190E 2.3 1987 300D 1997 C36 AMG 2003 C320T 4matic past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350
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#3
11-27-2006, 04:05 PM
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Pull the valve covers to see if the chain is intact. If so, slowly turn the engine by hand to see if all alignment marks are in sync. It will be easier to turn the engine by hand if you remove the spark plugs. If you encounter any resistance (other than compression if the plugs are installed), don't turn the engine further. Don't turn the engine CCW under any circumstance.
Sixto 93 300SD
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#4
11-27-2006, 04:46 PM
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Thanks Guys, Im not keeping the engine in the car, I just want to check if its salvagable. I need to recoupe some costs on this project, (see Diesel SEC swap) in diesel discussion
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1984 Euro 300SDC, (4spd standard) 1986 Toyota Landcruiser Diesel HJ60 5spd X2 Gone but not forgotten (some sold, some stripped) 1983 300 SD, 1985 300 SD, 1983 240D, 1986 300 SDL, 1985 300 SDL, 1983 300 D, 1984 300 D, 1985 300SD, 1987 300 SDL, 1983 300 SD, 1985 300 TD Euro, 1983 380SEC, 1990 300 D, 1987 300D, 1982 300D, 1982 300D, 1994 E420, 1987 300 TD, 1987 300 D, 1984 300 D
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