Help Me Identify a Nissan Turbo
 

I was hoping someone could help me identify this turbo, or maybe point me to a FAQ, etc... I have searched for "Nissan turbo" "Nissan T25" "Nissan Z31" etc... and I get hundreds of sort of disjointed posts, but none that I can find specifically about this turbo.

I traded a box of Miata intake parts and various left over pieces from a previous turbo build to a guy for a non-running SeaDoo SPI. I got tired of it sitting in the driveway on two tires, so last night I traded it to a guy for a Toshiba Notebook, a new Sony handycam that records on a mini dvd, some new Craftsman air tools, six Nissan 300zx injectors and a Nissan Turbo.

he said that the turbo came out of a JDM :facepalm: 1980's model single turbo Z31 Nissan 300ZX. It appears to be a T25 type turbo, but since I have never really pieced together my own turbo and my previous experience has been with a Greddy kit, I am really not sure about this one and would like you guy's help.

I already have a Shanghi-S kit ordered from BEGI and a MS on it's way from Scott for my 1994 miata build. I was wondering if it might be worth my while to take this thing apart and rebuild it and keep it in reserve in case the Chinese turbo craps out. Since I don't have the Chinese turbo yet I can't even see if the flanges are the same or not.

Any help or links to some specifications, etc... about this turbo would be appreciated.

OH... And I looked and it doesn't look like I can use the injectors on my Miata build, so i wonder where the best place to sell them would be.

After More Research...
 

I found this completed listing on Ebay...

eBay Motors: TURBO T25 TURBOCHARGER GARRETT NISSAN 300ZX Z31 87-89 (item 310129809822 end time Mar-28-09 11:50:36 PDT)

So is that turbo built by Garrett for Nissan? If so maybe I have a decent turbo on my hands.

Pics?

I'll have to get them when I get back home, but the one in the eBay listing I posted is the same one that I have. At least it has the same numbers on the compressor... 17V4 [I think]

Take a pic of the turbine to exhaust flange, and the flange where it mates to the manifold.

I know the Z32 turbos have a different turbine flange and you'll pretty much have to go with a custom pipe to get it to work.

Holy shit the Z31 used a t25 frame, thats a lot of exhaust gas through that tiny little turbine housing.

I am not sure... That is the kind of information that I am trying to find out...

Well according to that eBay link, its true. I'm confused by that honestly but the VG30ET is a pile, I wouldn't be suprised that tiny little turbo is on there, Z31s don't even have any charge cooling!

Yep... that year the 300ZX was a single turbo with out an intercooler. later years they went to dual turbos and an intercooler and I think they were putting down about 300hp at the flywheel.

Still I am wondering about this particular turbo... And whether or not it will be worth my trouble to rebuild it or consider using it.

Another place says its a T3, there is quite a bit of size difference on the t2 frame versus t3 frame.

FS: SR20 Turbo, Z31 Turbo, other SR parts: Engine / Drivetrain (for sale): Nissan Forums / Infiniti Forums - NICOclub
That link talks about 85-87 being a T3 frame.

t3 dimensions (from Honda Society)
108 x 67mm outside
48 x 65.5mm square
87mm and 45mm is what the holes are apart

If its smaller than those, its a t2

first ebay link is a T25. second link is a T3 footprint, but the outlet doesn't look correct for a true t3.

post pics of your turbo.

Here are a couple of pictures...

There is a very small aluminum tag in between the two turbines that reads:

Garrett
Made in Japan
UA 0271J
14420-17V04
444321-6

hmm. It looks only slightly different than the CA18DET t25 but it does look like it has a T3 compressor wheel.

I measured the bolt pattern for the manifold bolts and they are 87mm and 45mm. So it must be a T3 housing.

This is something about piecing together a kit that has always bothered me. So many little variations from car to car on very similar turbos. Just enough so that it wont work without major fabrication of flanges. I don't know much about Nissan turbos, but I can't see the Z31 having a T3. But perhaps it is. I have no helpful info on this one. If it does work however, and you don't want it... *cough* ;) I'll come take it off your hands for a reasonable price.

Edited FTT!

84-86 300ZX Turbo came with a T3
87-89 300ZX Turbo came with a T25

This information was given to me by a friend of mine who owns an '85 Turbo Z as well as an '88 Turbo Z and is mixing/matching parts to build one car.

that's a t25.

Based on your measurements of 87X45 mm I would go with it being a T3 based on solely on the flange size.

The conversions come out to be on the T3 flange pic below: 85.726 X 44.45 mm for stud spacing.

http://www.jgstools.com/turbo/tk030p.jpg

Based on the pictures or the dimensions?