Mi16 Crank Thats Threw A Rod - Do They Survive?

[Stu 18]

Hi all,

 

Im starting to think about putting a 2045cc '6 engine together with the crank from my old Mi that threw a rod; it hasnt been checked, and obviously that'll be the first thing to get done before i even start to buy any bits, but i just wondered if anyone else had re-used a crank in a fresh build from an engine that had previously thrown a rod?

[JeffR 51]

Not thrown a rod as such, but I've spun a rod bearing had the crank straightened, ground 0.5mm undersize & it sees 8000rpm every time its used!

[petert 607]

If it has discoloured the journal the crank is probably bent.

[Stu 18]

From memory there was no discoloration on the journal that spun, and no major signs of pickup either weirdly, i would say a first size overgrind would clean the journal up...

 

Was more concerned with it being bent from the force of ejecting the rod through the block