I will be explaining how to install the factory Z33 seats into a S-chassis car, as all S-chassis share the same seat mounting points. Specifically, I used my daily, S13.

DISCLAIMER: I AM NOT RESPONSIBLE FOR DAMAGES INCURRED BY FOLLOWING MY DIRECTIONS OR ANY HARM THAT MAY BE INFLICTED BY NOT FOLLOWING DIRECTIONS OR POST OR PRE INSTALL OF THE 350Z SEATS.

Now, for the write up.

You will need the following materials:

Angle grider.Electric drill.Plenty of bits with lube.Welder.Socket wrench with a 14mm and 10mm socket.Flathead screw driver.Hammer.Tape measure.An extra set of all four seat brackets from either S13 or S14. Seats with the brackets removed will not be useable! Go pick up a junk seat and take the brackets!

Inspection:

First, lay the two seats down on a table or some sort.Take a good look at the bottom side of the two seats, you will recognize an immediate difference, where as the stock seat's brackets are much lower than the Z33 seats.Z33 seatS-Chassis seat.

#1- Taking the Stock brackets off..

Take the stock seat brackets off.I do not have the during-process, but you will need to drill out the spot-welds on the brackets and the large rivit to remove the brackets.Rivits shown in red.

#2- Taking the Z33 brackets off..

Again, same deal with as taking the stock brackets from your old seat off.Unbolt the lateral bar that holds the two rails together first with a 10mm socket, than just drill out the spot welds and the rivits as shown:

*The red circles are the rivits, spot welds are very visible along the bracket.The blue oval is the lateral bar that is needed to be removed*

To easily remove the brackets without damaging them after the rivit and the spot welds have been drilled/grinded out, use your flathead and tap it into the crevice where the bracket meets the rail. It will require some force!

***You do not need to drill out the Left (driver's side door) side rear bracket, but I have and had to add washers and a longer bolt to make the seat level.***

It'll take some time to get these all out and will be a messy process.If you care about your old brackets, try to keep it clean, but I got fed up and took the angle grinder on everything and got them off, keep in mind however, these are not re-useable now!

During, in-step process and the aftermath:right-rear bracketright-front bracketTrusty-ol' angle grinder!Teh-Carnage

#3- test fitting the S-chassis brackets on the Z33 seat.I used duct-tape to mock-up the process and eventually welded them together.

I measured the distance between the stock S-chassis brackets and mocked it up on the Z33 seat accordingly. On the S-chassis rightside bracket, the distance between the center of two holes were around 41.75cm for the right side (closer to the tranny tunnel when installed) and 42.75cm for the left side (closer to the door when installed)right sideleft side

Last step would be to weld these brackets onto the Z33's existing rail.I didnt take any pictures during nor after the welds.I used a Flux-core welder and it looked like ****, but who cares? its going under the seat!

After 30 minutes of welding, I cooled them off and installed it in the car.

As soon as I installed the seats, I realized I had made a mistake on the Driver's side Rear left side bracket.I should've kept it!As well as i should've test fitted it in the car!

Anyhow, heres the aftermath, I couldnt install the front left bracket correctly and just stuck a 2x8 under there and called it a day.I know its very dangerous, but it'll work until I take the seats off again and re-do the left side brackets!



I'll post another how-to after I permanently fix the brackets on the left side!

NICE work, made it look easy, If only the seat were cleaner.. and you vacumed.... but looks nice!

haha yeah,it has a small about-to tear spot on the bolster.at worst, i'll just re-upholster these seats.

i need to clean my car

looks good ive always wanted to know how a 350z looks like in the s13.

AAWWWWWW SHIIIIIAAAAATT, thats teh dope! now do it in an s14.

^same deal bring me another Z33 seat and ill do another one..this time i'll do it perfectly. lol

if i had one, i would have had it in by now lol.

awesome! preference on custom title?

haha, KDM-NESSLOL!

Nice job on the seats and the write up.

let me know when you get the new writeup done so i can edit the info in!

Alrighty

Hmm if I could find some Z33 seats I'd try it out, they look good!

How weird, I was just thinking about putting the Peanut Butter leather 350z seats in my ride last night. They would look so sick..

wow, 350z seats with wear on them already... damn

for the next person who does this give this a shot... take the carpet out and center console out, cut the brackets off how ever you need to. bolt the s13 brackets to the car. (put a washer in between the bracket and the floor to simulate carpet thickness, it will matter) set the seat on the brackets, and wiggle around inside the car and tack weld the brackets right where they need to be. remove the seat and finish welding.

viola, easy, no measurements needed!

^lolthats alot more trouble than needed.

i may end up selling this setup for a bucket setup laaaaaater down the road.

we'll see..first ill complete it correctly.i need to get some thinner blades for the grinder first.

nice seats! i really dig those peanut butter leather ones too.

This looks great, I know those seats are comfy. I love how low it sits too.. does it feel lower than the stock seat?

Looks good. If you don't mind me asking, how much did you pay for the seat?

Great idea and writeup.

but now, this begs the question, which are better: the up-until-now king of nissan seat, GT-R seats, or these z33 ones? (how adjustable are z33 seats? lum bar adjustable?

CJ

hmprice wise, i only paid 150 for this seat.

and 10 bux for the extra brackets i had to buy from a local guy.

GTR seats are, im sure, much better upgrade than the Z33 seats.

The particular seats i got have the leg support on the sides that go up and down.it doesnt help me much b/c i have long legs.

it does have good upper-body support though, better than a stock s14 seat anyways.

i didnt get the seatbelt unit in, so im not using seatbelts, but its holding me in better than a stock s14 seat WITH seatbelts.

i'm a medium-small frame guy.~5'10" and 150.i dont have much fat, but its tight on me, so im not sure if z33 seats are good for the more "husky" guys.

for the price, i think this justifies the upgrade.if it were anymore than 200, i'd have just bought a bucket seat, which i really dont want to, because of uncomfort issues.

i drove my friends ae86 with sparco bucket seats and i thought i was going to die bc it was so small, but my friend is bigger than me, so i dunno?

Ohh, so sexy..

babowc wrote:i need to get some thinner blades for the grinder first.

dont cheap out on the grinder discs... get 3m ones, they have thin and thick (1/4") the thick one is a hell of a grinder, its just so chunky it rips through rivits and the like. and mac tools makes the best grinders, but for everything else i buy snap on

hehei use the de-walt stuff.. it works.

i think ineed to invest in a die grinder/dremel.that would've made this thing entirely easier.

I like the 2 tone seats

lol if anyone make a kit for this i'll buy it

I apologize for resurrecting this but I'm very interested in doing it in my s13. I was just wondering if these sit any higher than the stock s13 seats?

Probably not.

Too bad these seats don't hold you in for crap.

Anything has to be better than what I've got now: egay seats that I stabbed with pliers.