rcb280z

Thanks Pharaohabq I needed that. I will jack it up this coming weekend and check the half shafts and post what I find.

I have good news! I paid a shop to put my Z through the test and it passed without any adjustments! His comment was "I have not seen one run this clean in a long time". When I mentioned above that I had replaced the TPS and AFM connectors I failed to mention that those were recent changes, after the last smog. These were too corroded to clean thats why I changed them out. It only cost me 20 bucks and he spun it up on the dyno like they do here in CA and I couldn't believe how clean it was running. CO=.07 at idle, and less than that for the 15 and 25 mph test. I asked about HC's and he said "way within spec". Boy what a good feeling! I still have the issue with the corrosion deeper in the harness, or at least I think it is. Maybe it's not as bad as I thought if I'm putting out good numbers for smog. Or maybe I should just leave it alone. I agree to a certain degree with TonyD regarding cleaner air which is why I worked on this Z as hard as I did. Now I can drive it and enjoy it. Went through a Carl's Jr drive through yesterday for a cold soda pop and couldn't smell burning exhaust like I did before which also tells me it is running clean. Now on to find out what the clunk is from the right rear. Almost sounds like a busted strut.

Have you solved your fuel pressure issue yet? You said its running rough after it warms up. Im wondering if you do have too much fuel pressure and after warm up its running too rich. Have you checked your plugs? That will tell you if you are running rich. I would get the fuel pressure fixed before doing anything else. IMO

I installed mine in the stock location and used simple 3/16" rubber plumbing gaskets in between the radiator and core support that you can find in any home improvement center....simple.

Probably good advice. All connectors including the TPS and AFM ones have been replaced. TPS, AAR, TTS, CTS, injectors are also new. When I say new, no older than 2 years. I have recently discovered corrosion deeper in the harness's than I wanted to see so I know I have added resistance and that is a bad thing. Thanks for the help.

Dan_Austin, everyone I know (personally) in CA has problems when it comes to smogging. I don't know anyone that can take their 280 in and it pass without adjustments of some kind. That is my goal. To have a worry free FI system if there is such a thing. Our 2005 Altima has 171000 miles and everything is perfect with it, knock on wood! No FI problems at all. It is just a pain anymore, due to health issues, to worry about getting the Z to pass. I am a member of the online "classiczcarclub" and was able to work out most of the problems with my FI. I may just be complaining a little also. I have to lean the AFM, retard timing, and raise the idle for it to pass. It would be nice to not have to do that anymore is all Im trying to say. Like I said maybe Im just complaining about nothing. It starts every time, idles perfect, doesnt over heat, 21 mpg combined. Ok someone go ahead and say it....stop worrying about it?

Okay thanks for the info. I have a 77 and have to smog it. Even with the work I have done to the f.i. it will pass but just barely. So I was thinking of looking into megasquirt but, if I have to adjust megasquirt why would I spend the money on it? It wouldnt be any different than just keeping it stock and having to adjust it for smog right?

Has anyone that has installed megasquirt in their S30 had any issues passing smog in CA?

I ran the early su's from Ztherapy for several years on my 77 280 when I lived in Vegas and loved them! Now that I'm back in SoCal I have to run the F.I. system and I hate it...compared to the carbs that is.

In need of a F.I. harness with production date 8/76 - 7/77. I recently found out that the PO replaced the F.I. harness in my 77 280Z. Reason, he thought it was defective. Well there is no parts tag and he thinks its out of a late 75 and my microfiche notes the above dates as correct, not a 75 date. My fiche shows the following number for the F.I. harness 24011-N4700. And while Im at it, the engine room harness is kinda butchered up. That number is 24012-N4800. Anyone have such items? Thanks, Bob

I have spent nearly a year trouble shooting my EFI on my 77 and am ready to rip it out. But, I can't just put anything I want as far as a fuel system goes because I live in California! So if anyone here has a 77 fuel injection (original) you want to get rid of that is in very good shape (not cuts etc and was working.) please let me know. Thanks.