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#1
11-12-2007, 11:13 AM
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Weld line on valve cover?
On my 1983 300SD there is a weld line about 4" long along the left side (when facing the car) on the front of the valve cover.
The picture is not of my engine, but just to show where I am talking about. Any idea why there would be a weld line there?
__________________
1979 240D w/4 Speed Manual, Light Blue Estimated 225-275K Miles - "Lil' Chugs"
Sold but fondly remembered: 1981 300TD Turbo Tan 235K miles, 1983 300SD Astral Silver 224K miles 
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#2
11-12-2007, 11:15 AM
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Chain broke, cracked the cover, cheaper to weld than to get a valve cover at the Pick n Pull?
__________________
1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
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#3
11-12-2007, 11:36 AM
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yup. that is where the valve cover breaks when a timing chain lets go. I have one with JB weld on it in the same place. it's in my parts car that does not run...
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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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#4
11-12-2007, 12:04 PM
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Ditto. Thats about the only reason there would be a weld in that area.
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#5
11-12-2007, 12:14 PM
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Well that's good news then as I probably don't have to worry about my timing chain for a while!
__________________
1979 240D w/4 Speed Manual, Light Blue Estimated 225-275K Miles - "Lil' Chugs"
Sold but fondly remembered: 1981 300TD Turbo Tan 235K miles, 1983 300SD Astral Silver 224K miles
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#6
11-12-2007, 12:25 PM
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You're assuming a lot
If you have no record of what transpired with the original engine, it could as well be assumed that it wrecked the engine, they bought one from a junkyard that was missing a VC and they repaired the old one and used it.
__________________
Junqueyardjim Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis 1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA 2003 Jaguar Type X, AWD. beautiful, good mileage, Mom's car, but I won't let her drive it!
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#7
11-12-2007, 12:33 PM
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Well, I could worry about it, or I could just drive it. I know the engine runs great, has good pickup (for a 617), and starts easily in the cold so...
__________________
1979 240D w/4 Speed Manual, Light Blue Estimated 225-275K Miles - "Lil' Chugs"
Sold but fondly remembered: 1981 300TD Turbo Tan 235K miles, 1983 300SD Astral Silver 224K miles
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#8
11-12-2007, 12:56 PM
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That's right
Those three items add up in my mind also. It makes for a good engine. Hope you get 250,000 out of the current chain.
__________________
Junqueyardjim Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis 1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA 2003 Jaguar Type X, AWD. beautiful, good mileage, Mom's car, but I won't let her drive it!
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