i will like some one to help me where i can find a turbo or supercharger for my 1991 maxima i will appreciated

Most likely not gonna find a sc for your max. Go for the turbo. There are a few 3rd gens in here.

there are no "prebuilt" turbo kits for the 3rd gen, however you can with some work swap in a VG30ET out of an early 300Z (84-89)

87-89 300ZX. the 84-86 actually had a different design which would most likely not work out too well (crank snout was shorter and therefore had a different crank pulley. basically, you wouldn't be able to use the stock maxima accessories). other things were different but the crank snout was most notable.

you can take a look at what i did to turbo my 90 max here: http://members.cardomain.com/mtcookson

mark- what turbos did they use on those motors?
is one better than the other.
I'm probably gonna be looking for a pair in the future :evil:

Yeah, the VG-T swap would be the way to go with your car.


What exactly are you planning?

84-86 used a very small T3 *style* turbo. 87-89 used a T25 style. power wise, the earlier T3 style is much better but neither are really all that good. the T3 is limited to about 15 psi intercooled and about 250 whp on a Z with stock everything (only thing that was changed was boost was set to 15 psi).

i was thinking about picking up a second one myself and trying something rather... uh... crazy.

my other car could use a pair of turbos
that's what my research is primarily for.

I am trying to keep the questions generic so that it stays maxima related.

so I'd be better off with a pair of 84-86 turbos.
now all i need is some specs on them to toss into the dyno prog, then comes the joys of cam selection

pair, now what do we always tell the people with hopes and dreams of twin turbo maximas?

that not all cars are maximas.

that no one is as crazy as I...

there are no casting numbers (a/r) that i know of... a close guess would be that the a/r of the turbine is .46 or .48, something like that. the compressor is equally as small.... if you're planning on using them on a v8 they might work out ok. numbers wise, if you're putting them on a 350 that's about 5.7 liter which works out to 2.85 liters per side. right under the maxima's displacement. basically what i'm getting at is they would spool pretty well and should provide enough boost for noticable gain power. it'd be nice for a basic, low cost setup.

more numbers... lets say the Z has 25% drivetrain loss. at the maximum pressure (15 psi) and the rated 250 whp that the Z dynoed at that i saw, that should equal about 335 bhp. if that's so, then that should mean the turbos do about 33.5 lbs/min. if that's true, two of them should equal about 67 lbs/min. which should equal about 670 hp... i'm sure my numbers are a bit off though... but if not... that would definitely be fun.

torque would probably be even higher as to get those numbers the total pressure would be 30 psi... unless you split the manifolds and ran 15 psi to each bank, which the engine might handle a bit better. either way though, it would definitely be fun if my numbers are right.

now what would give you that idea

but at that high a psi I'd need some serious intercooler setup, right?
I was playing around last night on the desktop dyno, and I was watching how boost came in on different setups.
luckily I have a whooping 8.2:1 compression ratio on my motor, so I won't detonate to quickly
twins will be much easier to plumb than a single.
What are the CFM ratings on them though, any clue?
I need at least 600 to be usable.

Yes it is to be done on the dirt cheap. and it will be my first welding / fabrication project
worst thing that can happen is I grenade the motor

go browse and search here for a few hours and you should be able to find alot more spacific info that pertains to your size engine and small budget

http://www.turbomustangs.com/forums/...?s=&forumid=15

theres also a chevy spacific section if thats what your using

I looked over there, I just feel more comfortable asking here.
and it's a small block chevy.

:ahem:
not T25..T28.

no, its a T25... i already told you that.

10 psi is pretty much the limit go without an intercooler with these turbos. i'll try finding the cfm rating on them... i'm not sure how easy that'll be though.

you might want to look for mid 80s T3s off 5SPD thunderbird turbo coupes they used 60trim T3s with .60/.63 A/R housings which is one of the most desirable turbos for what your doing. the autos used .48/.60 which is alittle more restrictive but would still be better than any T25

if you decide to go that route, I know a guy you can try to contact about getting some used turbo's off thunderbirds, I dunno what kind of condition they would be in tho

I was thinking, though I may be wrong, that those would be too small because they only came off of a 2.3
I have seen a lot of people recommending those for other applications (TT mustangs, impulse upgrade)
But as I've said, I'm not too knowledgeable on turbos, yet.
if you can get me a ballpark price I'd appreciatte it. this unfortunately future planning still

i did some searching on z31.com and apparently they're saying the turbine and compressor a/r are more in the .6x's... they sure don't seem like they would be... but i really wouldn't know. all i know is its not big enough for a single turbo setup.

as far as to small that depends on how much power you want to make heres an exaple of what these are capable of on a ford 351

http://www.turbomustangs.com/forums/...ght=turbocoupe

Guys right now im running two .63.60 stock turbocoupe turbos. My car put down 472 hp & 552 ftlb with 10psi boost no intercooler.

I was hoping for 700, but that's a pipe dream.
those #'s are reasonable enough depending on the RPM range

any idea on how much power your 350 is making NA that will determine the amount of boost it will take to get your gole

170 hp, 270 lbs of torque
8.2:1 compression
it's a 100% bone stock 79 Impala motor california emissions.
of course with a cam and intake, I can bump it too 230 hp in a jiffy