Hmmm...

It sounds like one of the previous owners converted it to carbs and then it was later converted back to F.I. from a '76 either by the same P.O. or a different one. Either way, it looks like you've got a damn good car.

I'd try to use a bit of rubbing compound on that paint to smooth out the clear coat/oxidized paint. She'll look like new in no time.

Welcome to z ownership & welcome to the forums.

I hope you don't mind me using your pic, but you can tell if your engine is original, whether it had PO work or not by comparing these two numbers. I have a 78 or thereabouts engine judging by the number on the block, yet I have the same fuel rails as you so maybe one of my POs replaced the original engine in mine and used all the 76 injection stuff. who knows except they who did it. Nevertheless, you have a great looking car adn it's in ten times better shape than mine, again Congrats!

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I hope you don't mind me using your pic, but you can tell if your engine is original, whether it had PO work or not by comparing these two numbers. I have a 78 or thereabouts engine judging by the number on the block, yet I have the same fuel rails as you so maybe one of my POs replaced the original engine in mine and used all the 76 injection stuff. who knows except they who did it. Nevertheless, you have a great looking car adn it's in ten times better shape than mine, again Congrats!

I don't mind using the pic at all. That made it easy to find. I'm certain the engine's from a '76 280Z that the PO stuck in. He has the original parts car with the old engine sitting inside it. He had to make it fuel-injected, because it wouldn't pass smog in CA. (Came from TX) I eventually decided not to take the parts car... but I'm sure it's available if someone wanted it.

I'm kinda wondering the owner before the PO had a 240/260Z's twin carb engine swapped in from the original... so that it's had 3 different engines (including the original) in it.

Which, theres some loose ends of wires that I have no idea where they go. Some of the wiring on the engine has also been (somewhat) jury-rigged. (Near the black hose leading from the air filter to the top of the engine)

The engine's is L28 047353

The car's tag says L28 for the engine type, and chassis number is (a little hard to read, but) 484138

sblake01, Besides leaking the freon; can it cause other problems due to the conversion? (converted less than 5 years ago)

Spectre, I missed your question. Good thing the 'Array bot' brought this thread back. First off, to Rockr69, and as you found out, 78s don't have the engine number on the ID tag. I have a 78 with the original engine and it's number is L28 275675 so you do most likely have a 76 engine. Looking at your tag the VIN seems to be 464138 not 484138 which would be too high. That makes yours a little under 2000 cars later than mine. What's your build date? That would be on the tag on the driver's door jamb if someone hasn't removed it at some point and there should also be a clearer VIN there. As far as the AC question, R134a puts extra stress on the o rings, seals, and hoses in an R12 system due to the higher pressure.

Welcome aboard. You're in for one hell of a ride!