Dow.tom

iTrader: (3)

Are the turbos from each car the same? By the same i mean do they both use the same manifold bolt pattern and the same Down pipe Pattern? I don't care about the air inlet and the intercooler piping.

I just need to know if they accept the same bolt pattern from both manifold and down pipe. Thanks.

Also, what turbo would you suggest for ~200WHP? on a 1.8l

Dow.tom

iTrader: (3)

bump

magnamx-5

iTrader: (7)

both should work ask sam navy via pm he might have more info.

robomeme

Ok- here's what I have found...

1984 300Z used a T3 60/63, oil only CHRA. (not sure on the a/r's)
1985-87 300Z used a T3 60/63, water cooled CHRA.
1988-89 used a T25. As far as the nissan guys are concerned, that T25 isn't good for much on the V6.

http://www.az-zbum.com/information.basic.shtml

The SR20DET used a T25, with various A/R - I think the biggest one was a .63 hotside. It was the GT2560 (I think) and had a T3 flange on the turbine housing. Others are probably a T25 flange.

This might help identify your flange: http://www.forcedinductions.com/help.htm

Dow.tom

iTrader: (3)

now what about those 300zx about 1989 will those be using the T25 flange? and will they share the same exhaust flange?

Efini~FC3S

iTrader: (4)

Your sig says you already have a sr20 t25. If it's from a red top then it's a pretty good turbo. Get it rebuilt, professionally or follow the write-up elsewhere on this site.

I think the 300zx t25 is smaller than the sr20 ones, don't quote me on that though.

Dow.tom

iTrader: (3)

mine is the 80 AR t25. I am asking this because i have an offer to buy a mani/downpipe for a 300zx turbo for a 1.8l miata and want to see if it will mate up.

mxv

iTrader: (4)

i think the turbine outlet flanges are different. the standard nissan t25 is a 5 bolt and the 300zx turbo is a 4 bolt t2 flange or somthing

Dow.tom

iTrader: (3)

alright, i guess i'll just buy a HKS mani, and have an exhaust shop fab up a downpipe for me.

Dow.tom

iTrader: (3)

also does nissan dealerships stock the flanges for the air intake and intercooler pipe for the SR20 turbo?

RusMan

Probably not, post a WTB on a 240/drift forum, a lot of people have them, I also have them just laying around

Dow.tom

iTrader: (3)

how much would you ship them for?

samnavy

iTrader: (7)

Tom, you've been PM'd, but some guys here beat me to it.
As you can imagine, the stock SR20det compressor flanges are a hot commodity. The compressor inlet/outlet adapters will not work in a Miata application. They are both curved and will point the wrong way no matter how you clock the compressor. I did a **** ton of homework on this. There are two options. One, Dremel off the flanges on your compressor housing to make them round so they'll accept couplers... or buy the ATP adapters like I did.

Here you go for the Dremel method:
https://www.miataturbo.net/forums/showthread.php?t=7293

Here are the adapters you need. They are located in the Catalog-GT BB Install parts page. Be patient, the ATP website sucks:
http://www.atpturbo.com/Merchant2/me...gory_Code=GTBB
http://www.atpturbo.com/Merchant2/me...gory_Code=GTBB

Jefe

iTrader: (7)

I have 300ZX T25 and an HKS manifold.

For the DP.
I found it was a lot easier to just make a flange then try a buy one. You can make one simply by using some 1/2" flat stock, drilling 4 holes for the turbo to mount and then use a torch/plasma cutter to cut out the center section.

I knew I should have built two of them at the time...