Guest HBZ81 Posted March 11, 2007 Share Posted March 11, 2007 Hello, I am the friend he mentioned. Also today the wastegate popped when we tried to start it after putting on the FPR Link to comment Share on other sites More sharing options...
nismopick Posted March 25, 2007 Share Posted March 25, 2007 Hey guys. Haven't posted here much but the guys at ZDriver are becoming retarded in trying to help me with my problem, so I am posting it here hoping that someone can help. Actually... just to clarify.... xtreme didn't follow the instructions & wired things INCORRECTLY. But thanks for the "retarded" part. Link to comment Share on other sites More sharing options...
dj paul Posted May 7, 2007 Share Posted May 7, 2007 has anyone modified the NA dizzy to work with the optical sensor and chopper wheel? im having trouble trying to mount it because the shaft itself is larger on the NA i believe. Link to comment Share on other sites More sharing options...
nismopick Posted May 7, 2007 Share Posted May 7, 2007 has anyone modified the NA dizzy to work with the optical sensor and chopper wheel? im having trouble trying to mount it because the shaft itself is larger on the NA i believe. Just get an 82-83 turbo distrib... then you don't have to modify anything. Link to comment Share on other sites More sharing options...
rosemary 280z Posted May 21, 2007 Share Posted May 21, 2007 What is the performance advantage of doing this swap??? Link to comment Share on other sites More sharing options...
nismopick Posted May 21, 2007 Share Posted May 21, 2007 What is the performance advantage of doing this swap??? The car runs better. The Z31 ecu has a better fuel map, and uses a MAF instead of an AFM. Link to comment Share on other sites More sharing options...
xtreme 2 Posted May 24, 2007 Share Posted May 24, 2007 we are selling our entire set-up now... $85 shipped to anywhere in the US for the Disty, ECU, MAF, and Wiring Harness... Daniel decided to basically scrap everything we have done so far and is going to just let the car sit and then attempt MegaSquirt later in the summer... Link to comment Share on other sites More sharing options...
Guest HBZ81 Posted May 24, 2007 Share Posted May 24, 2007 we are selling our entire set-up now... $85 shipped to anywhere in the US for the Disty, ECU, MAF, and Wiring Harness... Daniel decided to basically scrap everything we have done so far and is going to just let the car sit and then attempt MegaSquirt later in the summer... Or perhaps rbXX swap or v8... when i'm back from the oil fields... havent decided yet Link to comment Share on other sites More sharing options...
steveosupremeo Posted August 11, 2007 Share Posted August 11, 2007 i have a question, would the ECU and MAF from an 85 turbo work just the same or are there some big differences? i have access to an 85 turbo, i know the chopper wheel will work ok but what about the rest? thanks. Link to comment Share on other sites More sharing options...
Bernardd Posted August 11, 2007 Share Posted August 11, 2007 85 ecu/maf will work fine. Link to comment Share on other sites More sharing options...
steveosupremeo Posted August 11, 2007 Share Posted August 11, 2007 ok, thanks for the fast reply! Link to comment Share on other sites More sharing options...
jmmorriso Posted October 29, 2007 Share Posted October 29, 2007 No one has hit this thread up in a while, so Im just gonna post what Im about to do and see if any is still watching. Ive got a 81 280zx na and I just got the ecu maf harness and CAS wheel out of an 85 na 5speed car with digital dash. Im thinking about swapping the whole harness since the na 280 harness will be lacking so many wires and the injector harness grounds all the injectors to one big resistor. I will need to undo the recall on the 300 harness and put new dropping resistors in. Also I am waiting on a 280 turbo dizzy and need to buy a new H02s Doesnt look like I will need to hook up too much new wiring except the hot for injectors, FPR and the coil, right? Ive got the 300 coil and transistor/ ballast. the 280 getc the tach signal from the coil wiring and not from the ECU right? Link to comment Share on other sites More sharing options...
280Z Turbo Posted October 29, 2007 Share Posted October 29, 2007 No one has hit this thread up in a while, so Im just gonna post what Im about to do and see if any is still watching. Ive got a 81 280zx na and I just got the ecu maf harness and CAS wheel out of an 85 na 5speed car with digital dash. Im thinking about swapping the whole harness since the na 280 harness will be lacking so many wires and the injector harness grounds all the injectors to one big resistor. I will need to undo the recall on the 300 harness and put new dropping resistors in. Also I am waiting on a 280 turbo dizzy and need to buy a new H02s Doesnt look like I will need to hook up too much new wiring except the hot for injectors, FPR and the coil, right? Ive got the 300 coil and transistor/ ballast. the 280 getc the tach signal from the coil wiring and not from the ECU right? I didn't think an '85 ECU needed dropping resistors. At least the '85 turbo doesn't. http://www.redz31.com/pages/fuel.html Link to comment Share on other sites More sharing options...
Omar Posted November 25, 2007 Share Posted November 25, 2007 are there other mafs that can replace the stock l28et maf my just rewiring it to a different plug without changing the ECU? kind of like how i can put a Z32TT maf on my SR? Link to comment Share on other sites More sharing options...
nismopick Posted November 27, 2007 Share Posted November 27, 2007 are there other mafs that can replace the stock l28et maf my just rewiring it to a different plug without changing the ECU? kind of like how i can put a Z32TT maf on my SR? No.............. And the L28ET ecu doesn't use a MAF, it uses an AFM. Link to comment Share on other sites More sharing options...
jmmorriso Posted November 27, 2007 Share Posted November 27, 2007 I have most of the wiring figured out now, using a harness/maf/ecu from a 85 na. I cant find the wiring to the VSS! Its not on the ecu harness anywhere. The signal wire is supposed to be pin 29 purple and its not there. I wanted to use the VSS so I didnt have to jerry-rig the MAF burnoff cycle, but it looks like the ECU and VSS were never connected. Also, what are the differences between NA and turbo ecus? My car is NA so I figure that using a na ecu is fine, but whats different between the two? Im assuming its just the boost referenced timing retard and knock sensor, right? Why does the NA car have a boost sensor? All the junk came from a digital dash car, did it have a vacuum gauge? Link to comment Share on other sites More sharing options...
jmmorriso Posted November 27, 2007 Share Posted November 27, 2007 Does anyone know how I am supposed to get this smogged when I'm done? I am assuming I will have to take it to the BAR station, but will they frown upon the non factory engine management, even though it is more precise and cleaner burning than stock? Link to comment Share on other sites More sharing options...
Afshin Posted January 6, 2008 Author Share Posted January 6, 2008 I have been asked many times for new photos, but they have been lost and I no longer have the Z31 set up, so I can’t retake them. However, there are some links that have photos: This is a good supplement as the title suggests by 280Z Turbo and has some picture and additional links that are useful: http://forums.hybridz.org/showthread.php?t=114687 Also as Nismopic already posted in this thread there is the JWT on how to install their Z31 set up PDF which has a lot of useful info in one place (wish I had seen this before). http://jimwolftechnology.com/wolfpdf/280%20Z31%20450HP%20UPGRADE.PDF Bumble Zee also has provided a write up with many pictures: http://forums.hybridz.org/showthread.php?t=99620 I had thought about cleaning up this post, but apart from being too busy, I think it is useful to see how it evolved. These additional links should provide more than enough extra reference material. It still comes down to only a handful of wires being swapped. If you have the diagrams and have studied them ahead of time, then the upgrade can be done most easily. Link to comment Share on other sites More sharing options...
Blobber Posted February 4, 2008 Share Posted February 4, 2008 I'm building a turbo conversion to my f54/p90 na engine(euro engine) and at the time I don't have any ECU or wiring harness for it. I'm thinking of putting 300zx ecu to my setup, but I was just wondering which would be easier to install to my car, 300zx ecu with my 300zx wiring harness only or the 280zxt+300zx wiring harness and 300zx ecu? Now I have L26 with carbs under the hood. Link to comment Share on other sites More sharing options...
Afshin Posted February 5, 2008 Author Share Posted February 5, 2008 As already mentioned in the thread, the 300zx harnesses appear to have better connectors, which are a common source of poor connections and EFI related "gremlins" in the 280ZX. So despite the easier/cleaner fit of the 280zx harness, I would select one from a 300zx, if starting from scratch. Link to comment Share on other sites More sharing options...
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