hello,

So my 2000 Honda Civic Ex spun a bearing on cylinder 4, which happens to be the farthest cylinder from the oil pump. So I've been reading up on why this happened and it looks like the crankshaft has 1 oil hole per journal, while the z6 has two. I want to buy a rebuilt motor and swap it with mine, since it's the most cost-effective and time saving option. But I'd like to swap out the crankshaft with a z6 to prevent this from happening again.

Would I be able to take a z6 crankshaft that's been grinded and balanced by a machine shop and just swap it out with the y8?
And is it necessary to take the head off and take the pistons out to do this? I wouldn't want to damage the valves by having a piston run into the head.

Any guidance is appreciated.

 

Yes you can swap the crankshaft one for one and it's possible to swap it out while leaving the engine (block/head) fully intact without removing from the car. I will say from experience though, it'll be much easier if you just remove the engine from the car and work on the engine on a stand (head removal not necessary if you know what you're doing).

Whichever route you go, you should consider having the cylinder bores inspected which will require piston removal. Debris may have been circulated from the bearing that failed. Up to you in the end though.