I have a late 260Z and i took of the starter to replace a freeze plug, and when i put it back on the starter wont turn over anymore. I pretty sure i have it hooked up right (see picture) but all it sounds like is its about to turn over then doesnt. If i try it long enough it will finally catch and turn the motor over. Do i need a new starter or what, thanks for the help.

Also i need a new PCV hose, and i cant find any for a 260 will a 240 or a 280 PCV hose work?

Wire brush those connections and grounds and see how it works then. Also, I'd get a black negative cable to avoid a possible and potentially costly mixup. Not sure about the PCV hose but I just use bulk hose for that but make sure it's bulk PCV hose, not bulk heater hose.

i cleaned the connections and it twice but wouldnt engage again, if tried jumping the started, and all it did was turn the starter motor, it didnt catch the engine and turn it over

I'd say, based on that, that the old girl is probably due a new starter. That wouldn't be the first time I've heard of removing a part that worked and having it not work when reinstalled. Had that happen a few times myself. Maybe the extra moisture from the leaking expansion plug did it in.

alright well ill order a new starter and some new battery cables and see if that will clear up the issue, thanks for the help

If I am reading this correctly, your started spins, but doesn't catch the flywheel. To me, that sounds like either a faulty solenoid, or the spring that engages/returns the lever is either broken, disengaged, or on the wrong side of the lever.

Also, that lever will slide out of the way if it gets tilted the wrong way.

It's pretty easy to check. Just pull the starter, remove the solenoid and starter motor from the mounting plate and take a peek at how things look.

I used to to that with starters, alternators etc. Open them up and inspect them. When you find worn or broken parts in them, you have to find a source for those parts. Replacing them is easier than attempting to fix the malfunctioning one.