lexsar

I removed the existing oil sending unit, cleaned it up. blew it out, cleaned the connection. Now it is working. I may pick up a new one to have on hand if this one really goes south.

Thanks, I'll take the old one with me and look for one that will clear where I'm having issues. Great suggestion!

That is an excellent idea. At the moment, I'm focusing on getting it running and "presentable" but I definitely see your suggestion on my to-do list for the future... Thanks!

I'm going to try that zx radiator hose suggestion. It's worth a shot... In the meantime, I did use a zip tie to pull the lower radiator hose slightly away from the A/C compressor pulley and everything seems good. No leaks and runs in the proper temp range. I am, however, registering a big fat zero on the oil pressure gauge. Before firing it up, I did check the oil, normal oil level. No valve tapping sounds, engine does not appear to be oil starved. Maybe the oil sending unit is bad?!?!?!?

Thanks, I may try your zip tie or other suggestion and see where that gets me. I'll keep you all posted. Thanks for the input.

Thanks for the pics. The idler pulley for my setup is actually on top, opposite from the compressor. Your photos look like a very similar setup as mine.

Here are two photos illustrating the problem: One photo is a front view showing how the hose makes contact with the A/C pulley. The other photo shows damage to the old lower radiator hose. I may take waddiejohn's suggestion and see how that works out

Yes, I'm quite sure it's an aftermarket A/C. Installed long ago by persons unknown. It is quite a beefy bracket it is attached to too! Any recommendations on this hose issue?

I'll try and get a picture this weekend. No, it's not the alternator, it's an A/C compressor. The hose exits the engine, bends down along the outside of hte Alternator between it and the A/C compressor then takes a turn down toward the lower radiator inlet. This is where it rubs the A/C compressor. I did try and shorten the hose a bit, but it still makes contact with the A/C pulley. I'll try and get a pic posted... Thanks!

I just replaced the water pump in my 1973 240Z and I am having an issue with the lower radiator hose. When I took the old hose off, I noticed that the old hose had been making contact with the A/C compressor pulley. The hose was worn almost all of the way through! I had ordered a replacement lower radiator hose when I ordered the water pump which was almost identical to this one I took off. The only difference I noted was that the newer one was about 3/4" to 1" longer. It seems that I cannot get this hose installed in any way where it does not make some contact with this A/C pulley. I am considering going with one of the metal flexible coolant hoses (like Coolflex) in order to clear this pulley. Any suggestions? Thanks in advance...