C250 Sport - No oil change in 6 years and 50K miles.




I wish there are more people like you who actually enjoy such experiment.
I do destruction testing too on some of my stuff, but nothing as expensive as an engine though.
Keep up the good work my man.



Last edited by azblk; May 2, 2019 at 02:35 PM.
Wonder if they survived?
Did you check the crank bearings and journals?
Rods and wrist pins?
Or all you did was top end?
Cam shaft bearing surface look scored in pictures but hard to tell without a good close up.
Did you measure cam bearing verus bearnig bore?
Wonder what the oil pressure will be upon start up.
Make sure you video that.



Wonder if they survived?
Did you check the crank bearings and journals?
Rods and wrist pins?
Or all you did was top end?
Cam shaft bearing surface look scored in pictures but hard to tell without a good close up.
Did you measure cam bearing verus bearnig bore?
Wonder what the oil pressure will be upon start up.
Make sure you video that.
The cam bearing/cams are not scored. Just didnt do a very good job cleaning them.
The Best of Mercedes & AMG



I drained the old oil. Will put new oil and add that detergent. Run it for 20 minutes and change oil again. If it runs again will do a flush with the first couple of oil changes 🤬🤬



I would do very short oil changes to gently clean after all oil contains detergents and dispersants - polar heads with hydrocarbon tails !






Exhaust side wont lock. Gap between jig and cam
Locks. No gap this side
Full view
The black wedge in chain housing compresses the tensioner and removes the need to remove the tensioner if you are not replacing it.
Last edited by azblk; May 9, 2019 at 10:50 PM.



From here on out it should just be a matter of reassembling the rest of the engine, Add power steering fluid, engine oil and coolant. Double check and fire it up. Hopefully this evening or tomorrow will have it running.
Used electrical tape to pad one side of the locking jig to create a washer of sorts.
Improvised washer worked well.
Cams lined up and new chain riveted.
All three points aligned and chain back on. Timing is SET.
Last edited by azblk; Sep 20, 2019 at 12:03 AM. Reason: grammer



We will know soon enough if this experiment succeeded.
Heat shield is still off to check for exhaust leaks if any. Battery still needs to be put back in.





