changing oil pump whats involved.

[van damage]

Hello I have a 1989 240sx with a ca18det and was looking into changing my oil pump sometime in the near future, I just basically wanted to know how hard it is. Im pretty decent with engines, just havent changed a oil pump before.

I tried searching the CA forums and couldn't find any info that wouldv'e helped too much, just mainly people talking about crank sprocket being a pain and having to destroy the old pump to get it off. So I figured I would just ask here. I also plan to pull out the whole motor while doing this, just a little extra info.

Thanks in advance.

[180fan]

eh it aint too bad...just pulling the oil pan is a pain.