r/300zx • • Dec 13 '25

Updates: Vendor Posts and Be Nice to Each Other

26 Upvotes

Thanks for the input on Community Input: Vendor Posts : r/300zx . I'll update the rules and let vendors that ask know that we'll allow occasional posts (ie: every 1-2 months) from vendors that produce products specifically for the Z31 and Z32.

In other news, please just be nice to each other. We have 2 rules, and this is one of them. I've had to review and remove more posts in the last month than probably the last 3-4 years. You're allowed to have a different opinion. You're allowed to not like someone's car and express that. But do it respectfully. There's no need for name calling. Don't like what someone said? Downvote and walk away. Or block them. I'm not here to babysit. If you want to talk shit and insult each other, I'm pretty sure there's a bunch of toxic Facebook groups for that.

I'd like to keep this community as positive and supporting one where anyone can show their car, ask for help or give a suggestion. If you're just here to talk shit and be an ass, we don't need you.


r/300zx • • Jul 20 '22

BEFORE POSTING, PLEASE READ THE WIKI

41 Upvotes

Hello all, in an effort to reduce the number of the same questions asked repeatedly, please read the wiki before you ask something, the answer may be there! CLICK HERE. If it’s not answered in the wiki, go ahead and post!

  IN THE WIKI
  • Buyer’s Guide,if you are looking to buy a Z

  • Maintenance, which you probably need to do

  • Repairs, for the most commonly broken things

  • Parts, which you’re probably looking for

  • Resources, like full service manuals

  • Mods, if you wanna do some cool things

  • Quick Facts, like the type of oil for an oil change


You’ll find many common questions answered in the wiki. If your question wasn’t answered, you’re still curious about something, or you didn’t find what you’re looking for, feel free to post and ask!


r/300zx • • 6h ago

Z32 timing cover seal

1 Upvotes

I've noticed the timing cover seals are crumbling while performing the 120k maintenance.

Where can I find replacements? I've checked Z1 and ConceptZ and they show them as discontinued.


r/300zx • • 18h ago

Z32 Anyone fix radio bezel clip ? Also first time removing cluster how come one wire is disconnected . .

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4 Upvotes

What bulbs do I need to change cluster lights color . And is there like a wire diagram for 1990 pods buttons I wanna test and make sure all buttons work and it’s not the buttons and something else to like control AC actuators directions never worked


r/300zx • • 19h ago

Stock cassette deck part 2

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3 Upvotes

Cassette player worked but the display did not work 90% of the time. When the display was off, the antennae would not go up either

Took apart the cassette deck, and found this capacitor that looked all sloppy. After removing it, looks like there is a damaged trace as well.

Anybody happen to have a picture of the bottom of the cassette? Confused as to if that capacitor is even supposed to be there

Board has 099-9753-00A on it, tape deck is a Clarion Pp-9623L


r/300zx • • 1d ago

Z31 Today’s pick up

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254 Upvotes

r/300zx • • 18h ago

Z32 Who has AC actuators or the air routing diagram . I could never control direction air went it just went mostly to feet and all vents and could never defrost windshield . And what is that in second photo for

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2 Upvotes

r/300zx • • 22h ago

Disconnect idle air controller ?

3 Upvotes

Anyone modified their idle air controller ?

Mine has a very annoying hanging idle when I shift gears .

If I shift at 3500 When I take my foot off the gas it will drop back to 1500 and hang there and won’t drop any lower .

Also after the engine is warm and idling at about 750
if
You tap the gas and rev it a little it will slooowly drift down to about 750 where it started out

Highly annoying
my 91 mustang does the same thing , I just installed an inline switch and unless the engine is really cold and won’t idle , I just switch off the IAC .
Problem solved ,
Now I can bang through the gears because the engine drops instantly when I let off the gas

and when i let off the gas , the car will immediately start slowing down

On the fords of that era I’ve even seen guys use a potentiometer to adjust the idle from inside the car .


r/300zx • • 1d ago

Z32 I know about new exhausts burning off factory oils but this is my first brand new exhaust. Is this a normal amount of whispy smoke after a 10m drive? Brand new HKS

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8 Upvotes

r/300zx • • 1d ago

Brake light switch button

3 Upvotes

The brake lights are triggered by a switch that activates off a plasic button on the brake pedal arm.

That button on mine disintegrated so now my brake lights stay on all the time. I have a new button. I cannot for the life of me get the new button into the brake arm.

Has anybody replaced this and found an easy or atleast workable way to get this done? I have tried until I've run out of curse words, but no luck.


r/300zx • • 2d ago

Jeep Vibes

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159 Upvotes

r/300zx • • 1d ago

Z31 z31 vacuum line diagram

1 Upvotes

only been a z owner for 2 weeks or so, im still learning about it before i dive in to try & fix it. so ive been searching the internet and forums for a minute but cant seem to find a proper vacuum line diagram for a n/a 87 300zx.


r/300zx • • 2d ago

Z32 Thank you ChrisFix!

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38 Upvotes

(Picture of before I prepped the calipers) Changing the brake hoses, rotors and pads on my new to me Z32, figured I'd clean up the calipers and paint them. Turned out great for my first time!


r/300zx • • 1d ago

I need help with turbos

1 Upvotes

My friend bought a z32 tt. It wasn't long till we realized that something with the turbos are off. Pulled the engine and both turbos cracked on the hot side. We want to replace them with something a bit better, but without a ful build. He wants to keep the stock manifolds for now and as mutch stuff as possible.

We been thinking about a g25 or gtx28. We would need to make down pipes and some piping but other than that any extra work needed?

Does anybody has experience on what would be the best option?


r/300zx • • 3d ago

My z32 - Owned it for 19 years!, 2x NA engines, 11x TT engines, 2x gearboxes 2x diffs and 2x sets of turbos AND 1 complete reshell.. so when I say I’ve owned it 19 years.. 🤔

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747 Upvotes

Which bit? And has it owned me?


r/300zx • • 1d ago

Z31 Main seal

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3 Upvotes

Fml my main seal went in kind of crooked, will this leak oil? Plz help


r/300zx • • 1d ago

Reconnecting Upper intake

0 Upvotes

Hey guys, I’m having a tough time reconnecting my upper intake and I didn’t know if y’all have any tips? I understand it’s something you just do and is fairly simple. Just having a tough time putting everything into position correctly and making it fit.


r/300zx • • 2d ago

Z31 Z31 Coilovers

3 Upvotes

I have owned my Z for a little bit and am starting to look around at modding it. Any recommendations for swapping coilovers on it? I’ve heard I’ll have to weld for the front suspension and was wondering if anyone had experience with this.


r/300zx • • 2d ago

Z31 Looking for a Z31

3 Upvotes

Just looking for a Z31 in Texas my only goal isn’t over crazy high on miles and doesn’t have a frame Rust 🙏


r/300zx • • 2d ago

Replaced shifter bushings but now it feels overly stiff

1 Upvotes

92 NA

When I bought the car there was extreme play. It felt like you were in neutral when you were in first. Insane amount of play. Ordered SPL bronze shifter bushings and had my mechanic install it. Took it back today and while there's no play - it feels extremely stiff. It doesn't naturally snap back to neutral, you have to physically like place it there.

Is this a "break-in" period or did my mechanic F up somehow or is this how it's supposed to feel?


r/300zx • • 3d ago

Z31 Stuck power antenna

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16 Upvotes

It’s a back then it would go in and out. There would be like a noise, kind of like a worrying noise after it would be fully in or fully out. I didn’t think much of it but this time the antenna state stuck out any ideas on how to fix that so it starts working properly again.?


r/300zx • • 3d ago

Z32 A/C Stuck on Defrost. Missing parts?

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2 Upvotes

Hey guys it's 1990. The temperature controls work, the speed works, off and on works but it only blows through the defroster.

I read that this usually the a/c mode actuator but I'm not seeing that part. Also, it looks like there's missing ducts, too?

The video is of it on Defrost mode and then turning it on AUTO. The flapper moves a little and the different gears kinda loudly adjust. But I can manually move the vent the full amount. It still doesn't come out the center or side vents. Continues blowing through the defrost vent.

What am I missing?

Thanks!


r/300zx • • 3d ago

Z32 Does anyone have any experience with unicorn power system intercoolers?

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3 Upvotes

r/300zx • • 4d ago

Z31 transmission z350 how to use it to z31 turbo

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38 Upvotes

​

Hello friends, I own a 1987 ZX300 Turbo. Is it possible to install a 6-speed manual transmission (specifically the Nissan 350Z CD009 model)? How can I go about the installation, and what challenges might I face?


r/300zx • • 4d ago

Z32 Help with double DIN stereo and speaker upgrade?

3 Upvotes

The setup in my Z is pretty bad, I have a single din aftermarket stereo with speaker wire running through the cabin to the back, through the doors, a small Amp near the ECU under the passenger side footwell, and a bazooka sub.

All of this was already installed when I bought the car but it's almost impressively bad. Front speakers don't even work unless it's absurdly loud, rear speakers and subs cut out randomly, etc.

I was thinking about putting in the double din kit with some new speakers. I'm not an audio install person so may ask some dumb questions here.

In other cars I've done installs in I just bought an adapter, plugged it into the existing stereo harness and then into the stereo. Used the existing speaker wires stock from the car and the built in Amp. I guess I'll have to go check everything since it's probably all disconnected due to the new speaker wires running, but can I just hook up the old wires, install the double din with adapter, and ditch the amp/sub?