KA24 Crank swap ???

[jhutchins]

I have a 1991 240 with the Ka24 in it. I bought it from a guy that said it has a bad knock in the bottom end. I bought a new crank for it but never really worked on to many Nissans. Does anyone have any tips on replacing the crank? I havent heard the car run, so I am just going off what I was told when i bought it. Any other possibilitys besides the crank. They said what happened is that they just had the top end rebuilt and didnt put enough oil back in it when they put it back together and then it started knocking. Any advise would be great. Thanks,-Justin-

[1STGen240guy]

its a spun bearing or a rod knock ur goin to have to take the head back off then the oil pan and see what it is your prolly going to need new bearings and rods i just have the same problem with my brother 240sx he blew a head gasket and it got antifreezre and water in the engine and now he has a sever rod knock so we have to go and replace that its kind a pain

[jhutchins]

If I pulled the head back off what would I be looking for? I wouldn't need to take the head off to replace a crankshaft or a spun bearing would I?

[240sxdrifter s13]

no u wouldnt have to u just take the oil pan off and then take off the rod cap and replace the rod bearings its pretty easy but if its a rod knock your goin to have to take the head back offf because your goin to need new rods