Originally Posted by harvey/ga

hi, used to be on this forum four or five years ago and have just re-registered.
We have an 82 240D with a very good motor but somewhat beat up body and front end that we parked four years ago. I did crank the motor (15000 miles on a complete rebuild) regularly and changed the oil twice.
Anyway, found a 1983 240 with an excellant body and overall very good mechanicals, except for locked up engine, and bought it and put the 82 motor in it. So far so good.
The 83 locked-up motor had less than two quarts of oil in it - previous owner's son drove the car but never checked the oil - I pulled the pan and found the upper shell on the rod bearing on number one cylinder in tiny pieces, lower shell battered but more or less intact, bearing cap studs broken, bearing cap jammed against rod in cylinder.
I'm wondering if it's practical to try and rebuild this motor to have as a spare.
Plan B is - pull the 83 injection pump and install it on the 82 motor.
This 82 motor has maybe 300,000 miles on it. As I said before it was rebuilt but no work on the injection pump. The locked up motor has 180,000 miles on it.
I'm also wondering if this is worth doing or if I should leave well enough alone.
Or, at a minimum, should I pull the injectors on the lower mileage engine and put them in the 82 motor.
Any thoughts appreciated.
regards,
harvey