Help To Indentify Genuine N1 R34 Turbos - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

GTRgod · 10th November 2005, 04:57 AM

Hi guys,
There are a couple of places selling r34 n1 , and stock r34 ceramic gtr turbos and i dont want to get ripped off ending up with ceramic turbos!

Is there any different markings on the outside on the r34 n1 turbines to differentiate them from stock items? The ones ive got photos of have "garrett AR .60 M24" written on the compressor housing, do the stock items have the same writing??

Help much appreciated :-)
Kev.

drewby · 12th November 2005, 02:22 PM

hi kev let me just go get a set, yeh a/r .60 on the inlet side & .64 on the turbine side, inlet housing is a different shape, & if you pop the circlip off. & open the waste gete valve the hole is alot bigger. around 24 mm, the std one,s are around 18mm, & the part numb shud be AA401 or 403, i also have a pair of 33 N1 tubs for sale, hope this is of some help, nice pics on your site too,

, big up the GTR, cheers. D

Ajax · 12th November 2005, 06:57 PM

Quote:

Originally Posted by drewby

i also have a pair of 33 N1 tubs for sale

How much fella??

Bigjuice RB26 · 12th November 2005, 10:52 PM

R34 OEM Turbos are Part# 14411 AA300, Comp Housing is a T3 with a C100wheel. A/R is .53. Turbine housing is a T25 w/GT25 wheel, A/R is .48 Max BHP of airflow is 225. These turbos will break after prolonged use over 14.7psi as they are ceramic.
R34 N1 units have the part # 14411 AA401, Comp Housing is w/C106 wheel and A/R of .6 the trim is different. Turbine side is the same as above but w different trim and A/R of .64. Max airflow is 250bhp each. The shaft and turbine are steel.
I am running a pair of these on My 200sx that has a GTR motor in it as my GT2530s dislodged the bearing cartridge. With loads of tweeking I got it to do about 510HP@7200revs @ 20psi . With the GT2530s it would do 526HP@7300revs and at 17psi.
Hopes this info helps.

GTRgod · 14th November 2005, 12:50 AM

thanks guys! Huuuge help :-)
just one thing - Im told the part numbers are 14411-AA402 and 14411-AA403
does the aa402 sound right?
will be paying about $1450US incl shipping for near new looking set...
hope this will net me 300kw+ at rear wheels on 1.2bar (maybe im dreaming, i dont know , lol)

Bigjuice RB26 · 14th November 2005, 10:50 PM

The turbos by themselves cannot produce 300kw or 400+bhp. The rest of the hardware has to be tweeked to suit. The turbos just allow the airflow to support these power levels. I now that once all is equal you will see 300 or more KWs with these as they can support up to 500 bhp of air flow. The part #s I posted to you were from the Nissan "Fast" cd. AA402 and AA403 are not showing as N1R34 units but as the ceramic type which is rated 225bhp of airflow each. You can still run a clean 400bhp with these units.

GTRgod · 15th November 2005, 03:39 AM

ahh ok thanks for the help! but yeah i have other mods too im not just putting turbos on and thinking they will perform a miracle for me, hehe. Have: 700cc injectors, intercooler, intake, exhaust, cam gears , clutch , power fc , z32 AFM etc. etc.

Ive stumbled across the following information. I have no idea of its accuracy or origin , but it may be of help to people in future

BNR32 (NISMO)......Serial No. 14411-06U00 (F/M273 deg. plain thrust bearing centre)
T04B Compressor with a 0.42 A/R and 62T
T25 Turbine with a 0.64 A/R and CD79

BCNR33 (N1)......Serial No. 14411-24U10 (F/M360 deg. plain thrust bearing centre)
T3 Compressor with a 0.42 A/R and 55T
T25 Turbine with a 0.64 A/R and 62T

Included this for information...all R34 GTR's are Ball bearing turbo's...all previous models are only plain bearing.
BNR34 ......Serial No. 14411-AA300 (Ball bearing centre)
C100 Compressor with a 0.53 A/R and 50T
T25 Turbine with a 0.48 A/R and 62T

BNR34 (N1)......Serial No. 14411-AA401 (Ball bearing centre)
BNR34 (N1)......Serial No. 14411-AA402 (Ball bearing centre)
BNR34 (N1)......Serial No. 14411-AA403 (Ball bearing centre)
C106 Compressor with a 0.60 A/R and 55T
GT25 Turbine with a 0.64 A/R and 62T

Bigjuice RB26 · 15th November 2005, 06:39 PM

Yeap that looks pretty accurate. As you said the ones you have got A/R .6 on the compressor housing. If you look at the turbine from the inlet you should see .64. This will be a N1 unit. You can also look for the silver tag on the CHRA that has the part no. to confirm.

gtrsam · 21st July 2006, 10:55 AM

Whats the difference between these turbos and is 450 rwhp possible with these turbos ? will GTSS produce more or less power than the N! turbos ?

BNR34 (N1)......Serial No. 14411-AA401 (Ball bearing centre)
BNR34 (N1)......Serial No. 14411-AA402 (Ball bearing centre)
BNR34 (N1)......Serial No. 14411-AA403 (Ball bearing centre)

Toby Broom · 21st July 2006, 07:23 PM

there close GT-SS is slighly bigger, I would think that 500 aft is about the most you could get from N1's where as GT-SS are 550ish

Mashrock · 22nd July 2006, 06:22 AM

also.

BNR34 (N1)......Serial No. 14411-AA403 (Ball bearing centre) do not in my findings have a .60 front.. its .42 or around that number.

drewby · 22nd July 2006, 10:53 AM

N1, the 403 N1. does have a ,42 inlet & not a ,60 like the 401 & 402, do we know if the spool time is better on the 403 it may be a smaller wheel, not sure yet, will know next week when i measure back to back, with a 401 or 402, cheers. D

gtrsam · 22nd July 2006, 04:06 PM

Thanx for the input so far this means that iam leaning more to the GTSS since it can produce more power .

drewby · 22nd July 2006, 04:27 PM

There is also the 32,nismo & the 33 N1,s both good for around 575 hp. the 32 one,s deffo have more flow through turbine wheel than the 34 N1,s, cheers. D

Mashrock · 23rd July 2006, 04:48 AM

Quote:

Originally Posted by drewby

N1, the 403 N1. does have a ,42 inlet & not a ,60 like the 401 & 402, do we know if the spool time is better on the 403 it may be a smaller wheel, not sure yet, will know next week when i measure back to back, with a 401 or 402, cheers. D

i'd really like to know how that goes. the larger size are more like 25/30's right?? but then 25/30is to4b and the n1 is gt22. i dont really know too much about the housings.

10th November 2005, 04:57 AM	#1 (permalink)
GTRgod GTR Register Member Join Date: Jul 2005 Location: NZ Posts: 34	Help To Indentify Genuine N1 R34 Turbos Hi guys, There are a couple of places selling r34 n1 , and stock r34 ceramic gtr turbos and i dont want to get ripped off ending up with ceramic turbos! Is there any different markings on the outside on the r34 n1 turbines to differentiate them from stock items? The ones ive got photos of have "garrett AR .60 M24" written on the compressor housing, do the stock items have the same writing?? Help much appreciated :-) Kev.

12th November 2005, 02:22 PM	#2 (permalink)
drewby GTR Register Member Join Date: Jan 2004 Location: sheffield Posts: 587	34 hi kev let me just go get a set, yeh a/r .60 on the inlet side & .64 on the turbine side, inlet housing is a different shape, & if you pop the circlip off. & open the waste gete valve the hole is alot bigger. around 24 mm, the std one,s are around 18mm, & the part numb shud be AA401 or 403, i also have a pair of 33 N1 tubs for sale, hope this is of some help, nice pics on your site too, , big up the GTR, cheers. D

22nd July 2006, 10:53 AM	#12 (permalink)
drewby GTR Register Member Join Date: Jan 2004 Location: sheffield Posts: 587	N1 N1, the 403 N1. does have a ,42 inlet & not a ,60 like the 401 & 402, do we know if the spool time is better on the 403 it may be a smaller wheel, not sure yet, will know next week when i measure back to back, with a 401 or 402, cheers. D

22nd July 2006, 04:27 PM	#14 (permalink)
drewby GTR Register Member Join Date: Jan 2004 Location: sheffield Posts: 587	N1,s There is also the 32,nismo & the 33 N1,s both good for around 575 hp. the 32 one,s deffo have more flow through turbine wheel than the 34 N1,s, cheers. D

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12th November 2005, 10:52 PM	#4 (permalink)
Bigjuice RB26 New Users Join Date: Nov 2005 Posts: 4	R34 OEM Turbos are Part# 14411 AA300, Comp Housing is a T3 with a C100wheel. A/R is .53. Turbine housing is a T25 w/GT25 wheel, A/R is .48 Max BHP of airflow is 225. These turbos will break after prolonged use over 14.7psi as they are ceramic. R34 N1 units have the part # 14411 AA401, Comp Housing is w/C106 wheel and A/R of .6 the trim is different. Turbine side is the same as above but w different trim and A/R of .64. Max airflow is 250bhp each. The shaft and turbine are steel. I am running a pair of these on My 200sx that has a GTR motor in it as my GT2530s dislodged the bearing cartridge. With loads of tweeking I got it to do about 510HP@7200revs @ 20psi . With the GT2530s it would do 526HP@7300revs and at 17psi. Hopes this info helps.

14th November 2005, 12:50 AM	#5 (permalink)
GTRgod GTR Register Member Join Date: Jul 2005 Location: NZ Posts: 34	thanks guys! Huuuge help :-) just one thing - Im told the part numbers are 14411-AA402 and 14411-AA403 does the aa402 sound right? will be paying about $1450US incl shipping for near new looking set... hope this will net me 300kw+ at rear wheels on 1.2bar (maybe im dreaming, i dont know , lol)

14th November 2005, 10:50 PM	#6 (permalink)
Bigjuice RB26 New Users Join Date: Nov 2005 Posts: 4	The turbos by themselves cannot produce 300kw or 400+bhp. The rest of the hardware has to be tweeked to suit. The turbos just allow the airflow to support these power levels. I now that once all is equal you will see 300 or more KWs with these as they can support up to 500 bhp of air flow. The part #s I posted to you were from the Nissan "Fast" cd. AA402 and AA403 are not showing as N1R34 units but as the ceramic type which is rated 225bhp of airflow each. You can still run a clean 400bhp with these units.

15th November 2005, 03:39 AM	#7 (permalink)
GTRgod GTR Register Member Join Date: Jul 2005 Location: NZ Posts: 34	ahh ok thanks for the help! but yeah i have other mods too im not just putting turbos on and thinking they will perform a miracle for me, hehe. Have: 700cc injectors, intercooler, intake, exhaust, cam gears , clutch , power fc , z32 AFM etc. etc. Ive stumbled across the following information. I have no idea of its accuracy or origin , but it may be of help to people in future BNR32 (NISMO)......Serial No. 14411-06U00 (F/M273 deg. plain thrust bearing centre) T04B Compressor with a 0.42 A/R and 62T T25 Turbine with a 0.64 A/R and CD79 BCNR33 (N1)......Serial No. 14411-24U10 (F/M360 deg. plain thrust bearing centre) T3 Compressor with a 0.42 A/R and 55T T25 Turbine with a 0.64 A/R and 62T Included this for information...all R34 GTR's are Ball bearing turbo's...all previous models are only plain bearing. BNR34 ......Serial No. 14411-AA300 (Ball bearing centre) C100 Compressor with a 0.53 A/R and 50T T25 Turbine with a 0.48 A/R and 62T BNR34 (N1)......Serial No. 14411-AA401 (Ball bearing centre) BNR34 (N1)......Serial No. 14411-AA402 (Ball bearing centre) BNR34 (N1)......Serial No. 14411-AA403 (Ball bearing centre) C106 Compressor with a 0.60 A/R and 55T GT25 Turbine with a 0.64 A/R and 62T

15th November 2005, 06:39 PM	#8 (permalink)
Bigjuice RB26 New Users Join Date: Nov 2005 Posts: 4	Yeap that looks pretty accurate. As you said the ones you have got A/R .6 on the compressor housing. If you look at the turbine from the inlet you should see .64. This will be a N1 unit. You can also look for the silver tag on the CHRA that has the part no. to confirm.

21st July 2006, 10:55 AM	#9 (permalink)
gtrsam GTR Register Member Join Date: Oct 2005 Location: >>>>>SwEdEn<<<<< Posts: 316	Whats the difference between these turbos and is 450 rwhp possible with these turbos ? will GTSS produce more or less power than the N! turbos ? BNR34 (N1)......Serial No. 14411-AA401 (Ball bearing centre) BNR34 (N1)......Serial No. 14411-AA402 (Ball bearing centre) BNR34 (N1)......Serial No. 14411-AA403 (Ball bearing centre)

21st July 2006, 07:23 PM	#10 (permalink)
Toby Broom New Users Join Date: Aug 2003 Location: Herts Posts: 1,481	there close GT-SS is slighly bigger, I would think that 500 aft is about the most you could get from N1's where as GT-SS are 550ish

22nd July 2006, 06:22 AM	#11 (permalink)
Mashrock GTR Register Member Join Date: Jan 2005 Location: Sydney, Australia Posts: 162	also. BNR34 (N1)......Serial No. 14411-AA403 (Ball bearing centre) do not in my findings have a .60 front.. its .42 or around that number.

22nd July 2006, 04:06 PM	#13 (permalink)
gtrsam GTR Register Member Join Date: Oct 2005 Location: >>>>>SwEdEn<<<<< Posts: 316	Thanx for the input so far this means that iam leaning more to the GTSS since it can produce more power .