I have a 1980 280zx with the non-turbo L28. It has a rather old and cracked rubber boot between the AFM and TB. I got a replacement boot from the z store. The new boot has one small port coming out of it which I believe a hose goes to the air regulator. On the original boot, another port was rigged (with silicone and metal tube) that led to a hose which connected to the PCV valve on the valve cover. My service manual doesn't have anything specific about this boot and hose/hoses connecting off of it. Does anyone know anything about this rubber boot and the hose/hoses that come off of it. Where does the air regulator get its air feed, and where does the PCV hose connect to? A detailed picture of the engine compartment of a 1980 280zx would be helpful, but I can't seem to find one.

thanks
dp

 

Here is a picture of my '83 engine, it should be basically the same as yours. Let me know if it helps.

 

Thanks, your picture helped a lot. Now it seems, I might have a 83 motor in my 80 280zx, and the proper rubber boot for that year is no longer available from motorsports. I guess I'll have to modify the new one I have for the 1980 model.

 

All of the vacuum system is different in 1980 cars depending on wether it is a California car or a Federal car (smog wise). Which car is yours? Mine is an '80 Federal car... so I might be able to help you if yours is as well. If you aren't sure... the easy way to tell is to see if you have a second air hose running from the air cleaner box back to a small box next to the AFM. That is the "air induction valve" and is only on 1980 Federal model 280zx's.

Rod.