N1 Turbo Confirmation

[OohArrGTR]

Hey All, brought some 34n1s off calvinitys a while ago and recently sold them however there are no plates on the turbos.. and its very hard to tell what model there from.. i attached two pics and i would like to hear which ones are which from peple who know what 32,33,34 n1s they have and can tell the difference... thanks so mich for your time and help

[blk180]

a guess the ones on the left with the ar of .60

[pnblight]

R34N1 turbos

compressor 0.60a/r

47.22mm

turbine 0.64a/r

46.95mm

[OohArrGTR]

problem solved thanks

[itbmils]

OK

so does anyone know the ps rating for the smaller N1s ?

[Rowdyr32]

These look the same as mine and I have the r32 n1 pn on mine but in the ad they were said to be late model n1 turbos?

[OohArrGTR]

ok the thing is R34 n1s came ball bearing and in two formats.. 0.42 front and 0.6 front.. the early model 34n1s came with the 0.42 front and the later ones with 0.6 front someone confirm that please.. 32n1s are rated higher then 33n1s and have a 0.42 front compared to a 0.6 front on a 33n1... Plus GTSS have 0.42 front.. so i guess the 0.42 front 34n1s would be great for quick spooling and the 0.6 more top end?? hope this makes sense!

Chris.

[pnblight]

the 0.6a/r unit is also known as a GT2560R

[djr81]

the 0.6a/r unit is also known as a GT2560R

Hey Pete, are they what you have fitted to your 33?

[pnblight]

yes

[djr81]

These are a couple of compressor maps published in Zoom a while back purporting to be from an R33 N1 & a "group A" (whatever that is in relation to turbochargers).

The A/R for the respective compressors are 0.42 & 0.6 for the group A unit.

For the turbines it is 0.48 & 0.64.

You can see from the maps that they are markedly different.

Can anyone make sense of this lot in particular the following:

Is the "Group A" turbo the 0.6 A/R N1 unit?

Does anyone have any other compressor maps that might helpmake sense of all this - particularly the Garrett equivalents & the stock turbos?

[[WLDCRD]]

so what sort of power do the GT2560R's make? I have heard from 280hp to 350hp. One post someone mentioned Garrett saying 400hp each!! Anyone know the answer?

[pnblight]

']so what sort of power do the GT2560R's make? I have heard from 280hp to 350hp. One post someone mentioned Garrett saying 400hp each!! Anyone know the answer?

well mine are making 530rwhp at 20 psi on ulimate 98 (so i guess that must be close to 680 flywheel hp) someone else might be able to better estimate rwhp to bhp in a r33 gtr

hope it helps