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260Z Guy

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About 260Z Guy

  • Birthday 08/15/1988

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  1. I know it's not a 280 but it is the later model so it has the 280 body. 9/'74 260z 4-spd manual Carb'd L26, Mild grind cam, .050 over bore, Tokico shocks/struts, front sway bar, and a few other mods. A very tight-handling & quick little car. Needs a decent amount of body work. $1000 Let me know if you'd like any pics. I'm in Placentia, CA
  2. it's been a while since I started this thread but I finally got her running. The air flow sensor was all messed up so I picked up a newer one and it started just fine! My only problem now is that it is running very roughly. It seems that it is running a bit rich. When I suddenly open the throttle it coughs then catches up. Although if i slowly upen the throttle it seems fine. It will shoot some smoke out the exhaust. I noticed an adjustment screw on the air flow sensor and I am wondering if that needs to be adjusted since the AFM was off another zx. I will be picking up a repair manual for it later today so hopefully that will clear things up. In the mean time does anybody know what the adjustment screw does? Or has anybody dealt with this problem before?
  3. Thanks for the info on the pistons guys! The main thing that I am looking for right now is the low compression ratio. I am hoping that with a properly set up air/water intercooler & water/alcohol injection the charge will stay cool enough as to not knock with street gas, at least with the power levels I am looking for. I'm having the 280zx towed to my house in the next couple of hours, so I should be able to begin the diagnosis soon...I'm guessing at least the gas tank is shot because it has been sitting with gas in it for the past 3 years. We will soon see... I have always been a big fan of low-rpm torque and the whine of a supercharger and right now I don't know if I would be able to complete a v8 swap so I figured I'd go with the next best thing IMO. We'll see how it goes as it is a first time for me.
  4. I'm not quite sure what boost level would be best yet, but I am looking to put down around 225-250whp. I still have somemore research to do, but I do already have a couple of superchargers laying around waiting to be put to use
  5. I just picked up a 1981 280zx today as a donor car for my 260z! It also has a 5-speed so I am very excited to get the swap done! The engine is not currently running due to inactivity for the last 3 years but I will soon begin the process of getting it up and going again. My plans right now are fairly basic and that is to rebuild it. I am currently trying to find information on what amount of boost (if any) the stock L28 can handle, as well as what would need to be done to get it to put out about 250whp. Idealy my goals are: 1. supercharge the engine, Air/Water intercooled 2. water/alcohol injection 3. 50-75hp shot of nitrous 3. Maintain it's DD status So far I am not sure if a different ECU would be needed, if so mabye Z31 or megasquirt? Also considering using turbo pistons to drop the C/R. Any Info/links/tips are greatly appreciated!
  6. I appreciate all of the info six shooter, I will have to do more research into the alternator swap and Big 3 upgrade. That will probably be good for my application since I want to upgrade the stereo in the near future as well.
  7. I was just referring to the batterie's charged voltage (12v) and what the alternator should be charging at when the engine is running (14.4v). I wonder if it might be the voltage regulator, mabye it is set to low?
  8. I have been noticing that when my '74 260z is idling the air vents run signifigantly slower then when I am driving/accellerating. The same goes with my headlights(dimmer). I have the idle set at about 750rpm and the car does have a mild cam but it almost seems that the difference in power that the electronics are recieving is greater than the 2-2.5v difference in the charging and battery voltage. I have not checked the alternator's charging voltage yet but I wanted to see if this is a common problem. I have considered doing the AC Delco alternator swap if it is necessary. I plan on retrofitting some HID's and I just want to make sure the voltage is where it should be so they don't flicker. Any ideas?
  9. Oops, I posted this after when I was looking at the first page of this thread, I did not see your post 80lt1. But I am glad to hear that somebody else has fabricated their own. How are they working out for you? Also how much did you get the fx45 projectors for?
  10. I have been considering fabricating some "projector headlights" using a set of universal projector foglights kind of like these: http://cgi.ebay.com/ebaymotors/UNIVERSAL-P1S-CLEAR-PROJECTOR-FOG-LIGHTS-FOGLIGHT-KIT_W0QQcmdZViewItemQQcategoryZ33709QQihZ011QQitemZ320154480736QQrdZ1QQsspagenameZWDVW and a set of HIDs to match like these: http://www.xenondepot.com/product.php?product_id=145 I have found some good resources on HID technology and color temperature on this page: http://www.xenondepot.com/htec.php (See the paragraph under "Temperature") I figured that I could fabricate the housings for these lights with fiberglass to fit the projectors in to the stock headlight location. I was also not sure if I would have to fabricate a piece (metal mabye?) to block the light from where it's not supposed to go. One thing that I do not know is if the factory projector headlights are designed so they do not project in unwanted directions) But that is something that I will have to experiment with.
  11. Thanks for the help guys! capt furious, I see in your sig that you have swapped the l28 and 5 speed in to your 260z, how are you liking it? How is the acceleration compared to stock? I hope to do the same once I get the equipment and time. I have had my eyes on a '75 fi l28 along with the 5 speed. I have also been considering taking off the bumpers b/c I think the car would look so much better with out them. What do you think?
  12. Well I drove it around earlier today and it is now back to normal. The choke lever seems to be resting all the way forward now. So I guess that was the problem, I am so relieved that I didn't break anything!
  13. Ok, about a week ago before I went on vacation I ran my z kinda hard probably up to 6500rpm and when I got home and turned the key to the off position it coughed a couple of times then finally turned off. I did not think to much of it at the time. Ever since I came back from my trip it has been running very rough. So I checked all of the spark plugs; 1-3 were covered in gas, and plug #4 only had a little gunk. 5 & 6 looked normal. So I wire brushed them all clean hoping this would help but it did nothing. One other thing that I have noticed is that the choke lever does not seem to rest all the way forward. I will push it forward to make sure it is not on, and it will come back some. The choke light will even be on when it is like this. I also have not needed to put the choke on when the car is cold. I'm guessing this is further proof that it is running very rich. Mabye I need to take a look at the choke cable? Does anybody have an idea what the problem is and/or how to fix it? I greatly appreciate any and all advice. Thank you! -Ryan
  14. Hey guys, thanks for the replies! I think I will have to wait a little longer until I can start on this project, but that just means more research, right? But anyways, I have been looking for a l28et but have not had much luck finding them in that price range, it seems that the demand for that engine has driven the price up. If I do go with the na l28 I am sure that at some point in the future I will want to increase the hp further, but probably not more than 275-300whp. I'm guessing that I would need to forge the internals for that to be safe? Do you guys know/have a good idea what kind of boost a stock l28 can handle?
  15. Hi All, I recently purchase a 260Z, and now I would like to do some performance upgrades to it . I have been looking at an l28 and 5-spd trans swap which looks like the simplest of the options. Although I found an '86 300zx turbo car in my area for fairly cheap. From what I have found out so far, I will need to make custom motor mounts and do some wiring. Has anybody done this before? If so, what was your experience? If I were to go with the l28 my plan is this: rebuild the engine, lower the compression ratio, and build a custom twin-screw supercharger kit (probably run 6-8psi). I have not calculated how much power that would put out yet, but I figure that since the turbo zx came from the factory with 6.8 psi on the turbo, then this setup should not put too much stress on the engine. This should satisfy my hunger for more power....at least for now Please let me know what you guys think. I would like to pick up one of the setups within the next week, so please let me know what you think and what your experiences have been. Here is a partial picture(I think photobucket cut it off b/c high resolution:
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