2 engines that are aprt. a non turbo from an 81 300D that had a bad body and the po didnt change the oil much so it had to get changed with a junkyard one. The other is a turbo motor from an 83 300D that spun a connecting rod bearing. But I know one thing with the numbers im getting the evidence from being worn almost 30thousandths isnt being shown in ether of them at the the sleeves, pistons. I can still see the machine marks and no evidvence of piston slap whatso ever which 30thousandths of wear should do and thats why I questioning the specs in the FSM. The fsm has been wrong before in the past. It would be nice if someone who has the orginal hardcopies and looked up the specs.

Can someone whos rebuilt a 617.912 or a 617.952 engine please chime in.

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1986 300SDL, 211K,Dealership serviced its whole life
1991 190E 2.6(120k)
1983 300D(300k)
1977 300D(211k)