from what I understand, they're ball bearing T28s, and if I remember correctly they won't fit the bluebird mani,,,,,,,,,,,,,,not sure about the GTiR mani.

 

That is what I understand to Chimmike.

Brent

 

The turbo's fitted on the Skyline GT-R (BNR32)(1989-1994), are both Garrett TE2701.

Nissan Part no. : 14411-05U10 or 14411-05U20

Garret Part no. : 466071-1 or 466071-2

I believe the inlet flange is the same as a T2,so in theory it should fit the T25 manifold.

 

it will bolt on the manifold, we know that......it just won't work with the bluebird because of the placement.

 

so will it work on the gtir?

 

Flange: Four-bolt, the same as the T25 series
Exhaust 0.48 AR, compressor 0.60 AR
this are the specs from Skyline R32, R33 GT-R
RB26DETT .

 

those turbos would be way too tiny to support any reasonable power on an SR20, by themselves. you *could* go twin turbo, but why not go with a good, single turbo setup at that point.

 

Pretty much anything fits on a GTi-R manifold. Ever seen a GT3037 in person? It fits on an 'R manifold with absolutely minimal fuss.

Are you sure they're tiny? How do they stack up to a T25 from a Bluebird or an Avenir? Just curious.

 

if they are a t28 than how would they be so small ?? why wouldnt n issan call it a t25 what would rate it at a t28

 

k the only real diff is that the exhaust side is about half the A/R of the gtir T28
would that really hinder the performance that much ?

 

k the only real diff is that the exhaust side is about half the A/R of the gtir T28
would that really hinder the performance that much ?

YES! that is the most limiting factor for a turbo on our cars. we tend to clog up turbines way before we run out of compressor. on BB turbos, we run out of turbine and compressor at about the same time, and that is a straight T25 with a larger exhaust housing. That turbo is a 0.48A/R compared to a GTiR's 0.86 A/R, or the BB's 0.64 A/R, which is already tiny by comparison (those of you who have seen a GTiR next to a BB T25 will know)

it is a T28 because it is a T2 exhaust with a T03 compressor, that doesnt mean it will support more power. the INCON GTBB337 0.86A/R T25 will support more power than a 0.63A/R T3/T04E because it has a larger turbine. people get 50whp+ out of the 0.82 A/R T3/T04E with the EXACT same compressor and turbine wheel, all they did was change the exhaust housing from their old 0.63.

basically, less backpressure = more power - spool.

you would be lucky to see 6-7 psi out of that turbo, BTW.

 

so in theory if you put a GTIR exhaust housing on it you would have a turbo that would spool faster than the GTIR and it would support just as much power ? or even then if you were able to put a larger exhaust housing than the GTIR do you know where one of these is avalable ?

 

NO.

the reason it spools faster is because of the housing. if you switched to a GTiR housing, then, SURPRISE, you would have a GTiR turbo.

the housing will cost about $100+, i would just buy a GTiR turbo or similiar NEW from Louis Anaya. www.sr20performance.com

that turbo is NOT used and would require no dicking around to make it perform correctly.

the only reason you would want a Skyline turbo is for rice appeal. it wont make any more power than other, similiarly priced turbos.

 

that is incorrect.. the skyline turbo is a duel ball bearing the gtir to my knowledge is not a duel ball bearing also i can get a skyline turbo for 200 than you add the 100 and suprise!!! you have a gtir with a ball bearing center section for 300 ! that you can not get on a GTIR turbo

 

ball bearings have nothing to do with power. and a GTiR turbo doesnt really need all that much help getting spooled. you could buy a NEW turbo for $600-700, and i have seen rebuilt Sylvia turbos (read: a lot more power) for $550 or so.

but hey, sell whatever you want to whoever you want. finding a GTiR exhaust housing is not going to be as easy as you would think. if they only make 180-200 whp tops, and yell at you, remember that i told you so....

 

I have pics of the turbo if anyone want to see them. I have never personally seen a t-25 or t-28 but these turbos don't look that small. And I did a search and I read that these turbos can hold up to 15psi.

 

how is it going to create 15 psi if a 0.63 T25 has trouble supporting 15 psi? i dont know how many times i have to tell you guys this. buy a BB turbo, hell, buy ANY turbo if you want to make more power, this turbo, with our high compression, etc, will be clogged up over 200 whp. just because it came on a skyline does NOT mean you will be as fast as a skyline. a skyline has lower compression, and TWO of these, and they wont make much more than 350-380 or so whp on these turbos, one of these on an SR20 will be pretty sad. does anyone even know what the wheel trims are on these turbos? what if the turbine wheel is also extremely small? then not even a housing will fix it, and by the time you are done rebalancing the turbo after the new wheel, you could have bought a whole new turbo.

but hey, i have no idea what i am talking about, so by all means, waste some money and then find out you need to buy a nearly impossible to find nissan turbine housing (without buying a WHOLE new turbo) but dont say i didnt tell you so...

 

How does everyone feel about swapping a Gti-r motor into a 1999 Sentra SE-L, YES OR NO?

 

I just bought a GTiR manifold and im looking for a used GTiR T28, do you guys know what psi its set at? Unfortunately im automatic so safely i can only boost around 6psi until i get a torque converter form level 10. Thanx

 

7-10 psi, adjustable.

i wouldnt swap a GTiR unless my motor was toast and i had a good hookup on the rare 54C only parts (valvetrain, and some other random stuff) if you have a 99, chances are your motor is still fresh. if it isnt, then i would just get a BB motor, it has all the same cool stuff except the smaller bearings and no quad throttle bodies.