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#1
06-15-2004, 12:04 PM
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2.5 Turbo's Early Demise
I have a gorgeous (and very well taken care of) 91 300D 2.5 Turbo w/ 185k mi sitting in my yard w/ a seized engine that has oil and water in it.
Anyone have any ideas as to what happened to her? The oil doesn't even smell burnt, plenty of coolant, boost system was recently tested (9psi max @ 4500rpm), timing chain is still on... I am at a loss for what the heck to point the finger at.... Damn shame too... -M-
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Currently: 1972 350SL Euro 4spd 1973 BMW R75/5 1981 BMW R80GS 1995 FZJ80 with OM606 Conversion In Progress 
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#2
06-15-2004, 12:54 PM
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The engine overheated somehow, and the aluminum head cracked, now the head is toast...
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#3
06-15-2004, 01:24 PM
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Maybe the head gasket blew? I don't know pull the head and take a look. The engine probably was run hot.
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1999 SL500 1969 280SE 2023 Ram 1500 2007 Tiara 3200
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#4
06-15-2004, 07:24 PM
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Re: 2.5 Turbo's Early Demise
Quote:
Have you tried starting it again? Sometimes a siezed engine will turn again if it is allowed to completely cool to air temperature. Drain the oil and look for any metal shavings, odd colors, foam, etc. Make sure it is not just a bad starter motor (Weak/burned out). Good luck, the 2.5T is a very nice engine.
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#5
06-15-2004, 09:41 PM
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Seized as in can't turn the crank w/ a 4 foot breaker bar.....Forward, ..or back after forward didn't work...w/ the injectors out...
The oil looks and smells fine on the dipstick, but obviously there could be metal settled in the pan. Now I guess I just wait for permission from the owner to pull the head and the oil pan and see what the hell happened.
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Currently: 1972 350SL Euro 4spd 1973 BMW R75/5 1981 BMW R80GS 1995 FZJ80 with OM606 Conversion In Progress
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#6
06-15-2004, 09:50 PM
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'90 300SE 298k -300K and it gets put into retirement. '80 300D 255k Purchased new by family in 1980. Had a: 1973 220 (gas) 1980 300SD 1992 400E
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#7
06-16-2004, 10:34 AM
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I could only dream that it was as easy as what happened in that thread! That was one of my first suspicions and I pulled the serp early. No dice. Maybe it was the vacuum pump. Maybe I won't know until I pull it all apart.
Any other ideas out there? -M-
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Currently: 1972 350SL Euro 4spd 1973 BMW R75/5 1981 BMW R80GS 1995 FZJ80 with OM606 Conversion In Progress
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#9
06-16-2004, 03:00 PM
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I will be performing the post mortum this weekend.
I will update with cause of death when one has been more accurately determined.
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Currently: 1972 350SL Euro 4spd 1973 BMW R75/5 1981 BMW R80GS 1995 FZJ80 with OM606 Conversion In Progress
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