i havent started and wont tell it warms up. i'm trying to extend my engine for as long as i can. i'll be in the middle of farming when i start the project, so i was hoping to be able to have the parts ready to go. i do have another crank that i could have a shop check and by bearings for. would it be to much work to just replace the crack compared to a rebuild? my engine has quite a knock that comes and goes based off the weather, rpms, how long its been sitting, and if i have done any injector work on it. no one can tell me whats up with it. over 10k miles on it from the day i bought it with a injector knock that got worse, then better, then worse, then gone for 250 miles and then came and went based on random things. its gone and at anything above 2500 rpms and worse at 1500 rpms. i saw a video on youtube with the same noise, but the dudes cam went out on it one day.

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84 300sd 2.47 dif 360k
26 mpg needs lots of love
given to me in pitty

89 civic hatchback auto 140k
33mpgs soon to be low to mid 40's
been in the family since mile 1

85 300d with unknown knock. driven over 30k with knock and still going. sold for $800