Recently purchased a 80 300sd parts/project car. Not sure as to what I was going to do with it when I bought it.

Found out the oil pump chain had broke and was spit out the side of the upper pan.

Car has 316K on the odometer, but appears to have been cared for up to a point.

I plan to fix it with an engine out of my first Mercedes an 83 300D that my daughter wrecked a few years back.

Question is how many of you have had this oil pump chain to break or have heard of it?

The plastic tensioner was broke as well although it is impossible to tell what let go first.

__________________
1980 300SD Manganese Brown Metallic Clearcoat 248k
1979 300SD White 148 k
1984 300D Silver project car for daughter
1982 300D wrecked
1980 300SD 310K not running

JD,

You mean you plan to put a non turbo engine in the 300SD? The 300SD is an awful heavy car for a 75HP engine. That just might be the slowest car in the world. You might not be satisfied with it with a non turbo engine.

I never heard of an oil pump chain breaking, but there is a first time for everything. I suppose the engine has been run without oil. Can the original engine be rebuilt? If the crankshaft is not scored, maybe new rings and bearings will fix the engine or a rebuilt short block would be in order.

P E H

That would be slower than a 240 automatic.... someone call the Guinness Book of Records people....

Since when is an 83 300D non turbo? Maybe I missed something there....... But yeah, a non turbo SD would be slow.

__________________
1985 300D Turbo ~225k
2000 F350 (Powerstroke) 4X4, SWB, CC, SRW, 6spd ~148k
1999 International 4900, DT466e (250hp/660 ft/lbs), Allison MD3060 ~73k

1977-81 300D is non-turbo...1982-85 300D is turbo.
_________________________________________
jd,

This seems like a good swap idea you have...go for it !

P.S. Keep us updated as you progress.

__________________
Diesel-guy

OH, Thank Goodness.... having bug splatters on the rear window is SO embarassing....

------------------------
1980 240d ( I should know )

OK I forgot that the later 300Ds have a Turbo engine.

It should be an easy swap, since its the same engine.

Pay attention to the vacuum connections on both engines, especially the ones to the transmission.

P E H

Yes the doner engine is a turbo. The original engine may be rebuildable. Luckly the engine is not locked up and the crank may be OK. I'll have to pull it to tell for sure. The first two mains look OK, the bearings show the signs of run without oil. Going to part out if I don't rebuild.

__________________
1980 300SD Manganese Brown Metallic Clearcoat 248k
1979 300SD White 148 k
1984 300D Silver project car for daughter
1982 300D wrecked
1980 300SD 310K not running

Hello jdblann
RE: your wreck
Just a thought.
I do not know if your sill will fit; but kmaysob needs one.

back window sill

kmaysob
Member

back window sill
the original owners of my sd decided to chop the covers for the med kit and the other compartment to install speakers. well when i bought the car they took them out. is it possible to get a new sill and compartments for it? if so what would it run me?

__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
1984 190D
2003 Volvo V70
2002 Honda Civic

https://www.boldegoist.com/

No, you're talking W116 vs. W126.

__________________
Rick Miley
2014 Tesla Model S
2018 Tesla Model 3
2017 Nissan LEAF
Former MB: 99 E300, 86 190E 2.3, 87 300E, 80 240D, 82 204D Euro
Chain Elongation References

This looks like a pretty good deal if you are into ebay. Shouldn't have any trouble at all dropping this engine in.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&category=33615&item=2463656090&sspagename=STRK%3AMEBWA%3AIT

__________________
Jim