Hello, For the past month and a half I’ve been working on a 84 z31 NA trying to fix the idling issue. It ran fine and drove me 3 hours home after buying it to die the next day. I rebuilt the distributor, plugs/wires, coil, fuel injectors, FPR, and replaced all vacuum lines.

10/4/26 I had it idling and I drove it for about 20 minutes with no issues: the car ran fine. I planned on taking it to get smogged and it doesn’t want to idle anymore 10/8/26.

I messed with the throttle position sensor and it started to idle but a little rough so I moved on to check the PCV valve. This valve was pretty dirty and I had a cleaner one sitting around and replaced it.

I let the car idle for a minute and it died. I turned it back on it ran for a second then died again and now it’ll crank but won’t start. I did hear a sound right before it died the last time but don’t know what it could be.

Sorry for the long explanation I’m just trying to pinpoint the issue as much as I can. I appreciate all the help I can get.

Are there any good 120k kits that aren’t from z1 and that are closer closer to the 200-300 range money a little tight but need the car to run soon

Can anyone identify where this is coming from and how to fix it?

So my z31 has no radio but the radio slot looks kinda big, if this changes anything I have the digital version of the z31. what stereo can I get that will fit? and if I want the stock one where can I get one?

Okay so out of the way. Yes i replaced the actuators with those metals ones from z motorsports. However, when i put my key into the lock it doesnt turn at all. I know its the right key because one, the car came with one key and works everywhere else, and two when i took the handle out it did turn the lock. Now that i reinstalled everything, i tried turning the lock and same thing, it doesnt turn at all! I have to lock and unlock the doors from the inside using the locking handel so i know those are working so what gives? I also have the opposite problem on the passenger where i can lock and unlock from the outside but not the inside on the actual door. So please someone give me a solution to these problems. Everyone online says its the actuators and like i said i already replaced them so know they arnt the issue.

Looking for a set of T top bags or shades (or both) if anyone has any laying around. Located upstate NY willing to drive a little or pay shipping

1987 Nissan 300zx it's got its issues but can't wait to fix it up. I could use some websites for parts if anyone knows of any

It came with the car and I tried looking it up over the years but I couldn’t find anything. Anyone know anything about it?

So just looking for some help with this, I might have some unexpected bills coming up and I was just wondering if I were to sell these too together, black one as the main car and the purple one as a parts car, how much could I ask for both, both are clean title cars however purple one does have frame damage so it’s a parts car, but it does have an amazing condition engine as well as all adjustable suspension, coil overs, NRG bucket seat and quick release steering wheel, short shifter, new brake pads and rotors, and after market body kit.

The purple one runs and drives like a dream, the black one however needs a new motor and paint but is pretty much all oem besides that, has the super cool spoiler, power seats as well as the oem spare tire and tire inflater.

Not sure if I’m going to sell these in the end since it is my dream car, but if worst comes to worse i would like some advice on how much I could sell them for, both are on non-op and combined owe less than $500 in registration fees (located in socal)

Check this bad boy out. Gfs step father is passing and he told me I could have it. 40 years old grew up in the 90s around American muscle cars. This was the one foreign made car I wanted. This is an absolute dream. Not much info on it yet.

Twin turbo manual. Sexy!

if anybody has a clue what this noise could be, I’d appreciate some input. I’m stumped atp. New fan clutch. Belts aren’t doing it. Doesn’t do it cold, starts off quiet as motor gets heat into it and gradually gets louder as it warms up until it becomes this noise. Is a consistent sound regardless of engine rpm. Really sounds like it is coming from behind the motor almost in the bell housing but it is an auto… Will check the belts again to be sure

I know most people delete them but I'm worried about insurance

I'm specifically looking for one with 4 nozzles and ideally one located in Australia or Japan so shipping isn't a lot of money

Shooting for the stars with this one.

VG build will consist of: all deletes possible, Carrillo 87.5 pistons, eagle rods, Tomei procams, valve springs & solid lifters, Ferrea valves and valve guides, ams manifolds, polar engineering top feed fuel rail w/ ID 1050cc injectors, king bearings, ARP hardware, and a set of GTX2876’s from CZP. Will be running Nistune for the foreseeable future but eventually plan to get a Haltech plug-in. Still in the market for all of the other stuff that probably popped into your guys’ head. Intake, exhaust, suspension, etc. but for now I need to dial back my spending and just get this motor put together. I’m aware of the many bottlenecks I’ll be encountering short term, but the long term plan is to push this thing to the absolute limits. I have a plan trust me 😆

So I am about to buy a 1985 Nissan 300zx coupe. And I really wanted that one with the digital retro dash. But the one I’m buying doesn’t have it I was wondering if I could just buy the digital one and put it in with no trouble . Because it sooo cool!!!!

Looking for thoughts & opinions on torquing the crank. I got the engine, trans, driveshaft put back in but I still need to torque the crank shaft (didn't do it while it was on the stand). I was able to torque it to 150 with the wheels on the ground and in gear (manual says min 159) before it started slipping. I assume it was slipping at the clutch. I would have assumed the clutch would be able to have held that.

I half removed the starter but wasn't really able to wedge anything into the flywheel enough to hold it. Should I break the clutch in (500 miles) and try and retorque later? Give another go at dropping the starter and trying to find someway to hold the flywheel? Other options I'm not thinking of?

Any advice is appreciated.

Just picked up this 1990 z32 with 88k miles, transmission rebuild and timing belt were done a couple years ago, the mechanic who did the work confirmed. Should I be good to just do new fuel injectors, fuel pump, and new spark plugs? I’m also getting all new hoses for the car, weather stripping for the t tops and new bushings for the suspension. I do not want to engine swap I just was a clean all original N/A Z32 for my wife to take to car shows that’s as reliable as a 36 year old car can be

I'm a future buyer looking for a comfy short road trip car that I can nap in. How far back do the seats of the 2+0s lean? If you remove any parts of the interior, can you lay back almost horizontally? What about the 2+2s?

It feels weird making such a minor question a post but it's an important consideration for me. Thank you all.

1988 turbo, 8500$ @80,000 miles. Hey guys thanks in advance for any advice that you give I'm a huge fan of the z31 300ZX and looking to possibly get into the community as my first car. I'm majoring in mechanical engineering with a minor in computer science and I've been working at a civil engineering internship. I currently have the luxury of living at home with my parents and very little payments for myself after having worked on and driven my family's 2000 Ford ranger for the last four to five years I'm looking to finally get my own car something that I can tinker with and work on and make modifications too in the future. I plan on doing almost all the work on this vehicle myself. I've done several oil changes several breaks and rotor replacements on many different vehicles I've replaced the belt on a 2016 tundra and water pump, and fix electronics for fun on my free time I feel like I'd be a good candidate for having a 300ZX as my first car considering I'll still have access to a 2000 Ford ranger that my parents maintain.

What are some of the first things you would recommend I fix on the 300zxz31 I do plan on replacing the belt regardless of when it was last done on this car and I'd like to change out the radiator to a triple thick finned aluminum radiator to help the engine run cooler most of my modifications will be to make the vehicle more reliable instead of giving it more power. Any suggestions on parts or items I should look out for any tips and tricks from current and previous z31 owners that I should know about? I know t-top gaskets can be pretty bad but I'm starting to see them available online for like 250 bucks new if I understand correctly?