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turbo technical database

im570rm

Veteran Member
Joined
Jul 11, 2005
Location
Romania
TDI
Audi a6 avant 2.5 tdi quattro
Since i've been asked so many times about this here are some measurments that i took to several turbos ,please feel free to add then ones not listed
gtb2260vk audi version 3.0 tdi 233/240 bhp:
intake:
inducer: 44.5mm
exducer: 60mm
AR 45
exhaust:
inducer :50mm
exducer:45mm


gtb2056vk audi q7 version 3.0 tdi 233 bhp
intake:
inducer:41.5mm
exducer:56 mm
AR 45
exhaust:
inducer :47mm!!!
exducer:43mm


gtb1756vk audi 2.7 tdi 190 bhp
intake:
inducer:41.5mm
exducer:56 mm
AR 45
exhaust:
inducer :43mm!!!
exducer:40mm


1749vc 2.0 tdi 170 cr
intake:
inducer:36.5mm
exducer:49 mm
AR 42
exhaust:
inducer :43mm
exducer:37.8mm


gt2260v bmw 330d e90 233 bhp
intake:
inducer: 44.5mm
exducer: 60mm
AR .61(it doesn't say on the case)
exhaust:
inducer :50mm
exducer:45mm


kkk bv50 3.0 tdi
In: 50
Ex: 44.5
11 vanes, width 7mm
Comp:
In: 43
Ex: 59


GTB2056v for Alfa 2.4 JTDm (210 Hp)
Compressor (6 main blades) inducer/exducer: 39.6mm / 56mm
Turbine (9 blades) exducer/inducer: 43mm / 47mm
Compressor A/R: 0.56
Turbine A/R: 0.7


gt3571v hino truck:
intake:
inducer: 50mm
exducer: 71mm
ar??
exhaust:
inducer :60mm
exducer:51mm


GTB1749VK from 4.2 TDI ( 057145722N,765312-2)
compressor wheel:
36mm inlet
49mm outlet
12 blades
turbine wheel:
38mm outlet
43mm inlet
9 blades


volvo gtb2056vl
Compressor (6 main blades) inducer/exducer: 39.6mm / 56mm
Turbine (9 blades) exducer/inducer: 42mm / 47mm
Compressor A/R: 0.45
Turbine A/R: 0.64


GTB1749VM (GT1749VC) 2,0TDI 170hp
Compressor
inducer/exducer: 36.4 / 49mm
A/R: 0.42
Turbine
exducer/inducer: 43 / 38mm
A/R: 0.62


GTB1549VK Chevrolet Captiva 148hp
Compressor
inducer/exducer: 36.4 / 49mm
A/R: 0.42
Turbine
exducer/inducer: 43 / 35.7mm
A/R: 0.74


GTB1752V VW T5 174hp
Compressor
inducer/exducer: 38.6 / 52mm
A/R: 0.45
Turbine
exducer/inducer: 43 / 39.5mm
A/R: 0.74


MHI TFO35HL6b-13TB/VG BMW 320D 177hp
Compressor
inducer/exducer: 38.3 / 51mm
Turbine
exducer/inducer: 43.2 / 37.8mm


gtb2260vk water cooled (v12 tdi)
intake:
inducer: 44.5mm
exducer: 60mm
AR 50
exhaust:
inducer :50mm
exducer:45mm


gtb2260vzk (3.0 tdi 240bhp 2010 version)
intake:
inducer: 44.5mm
exducer: 60mm
AR 56
exhaust:
inducer :50mm
exducer:45mm

GTA2056V Jeep Liberty 2.8L CRD
Compressor
Wheel Inducer: 39.55mm
Wheel Exducer: 56mm (49 Trim)
.53 A/R
Turbine
Wheel Inducer: 47mm
Wheel Exducer: 42.7mm
.64 A/R


GT2256V Mercedes Sprinter 2.7L CDI.
Compressor
Inducer: 40.3mm
Exducer: 56mm (51.8 Trim)
.53 A/R
Turbine
Inducer: 50mm (est.)
Exducer: 42.7mm
.64 A/R


GT2359V - MB OM613, OM648,
Compressor
Inducer: 44.4mm
Exducer: 59.4mm
12 blades
55 trim
.51 A/R
Turbine
Inducer: 51.2mm
Exducer: 47mm
9 blades
NOT AMG!!!


GT2360V
Compressor
Inducer: 42.5mm
Exducer: 60.1mm
12 blades
50 trim
Turbine
Inducer: 51.1mm
Exducer: 47mm
9 blades



GT2556V BMW 730D P/N 454191-1
Compressor
Inducer: 40.3mm
Exducer: 56mm
Turbine
Inducer: 51.5mm
Exducer: 47mm



GT3063KLV
Compressor
Wheel Inducer: 43.7mm
Wheel Exducer: 63mm (48 Trim)
Turbine
Wheel Inducer: 53mm
Wheel Exducer: 47.4mm
 
Last edited:

cog

Veteran Member
Joined
Feb 6, 2008
Location
MIDDLESBROUGH... U.K
TDI
98 GT.TDI 11O
yep very useful info i was wondering what the differences in the 1756 and 2056 vk's were, most said seemed identical but one held boost easier . at least now i can see what makes them tick
 

JP123

Veteran Member
Joined
Mar 5, 2008
Location
Denmark
TDI
1999 Passat Sedan, 1.9TDI AFN
1749vc 2.0 tdi 170 cr

intake:
inducer:36.5mm
exducer:49 mm
AR 42
exhaust:
inducer :37.5mm
exducer:???
Does these measures apply for the 170 PD as well ?
Can it be made into a hybrid with 56mm intake ?
 

im570rm

Veteran Member
Joined
Jul 11, 2005
Location
Romania
TDI
Audi a6 avant 2.5 tdi quattro
I'm not sure....but if i'll find the pd version i'll measure it.
 

dieseleux

Théoricien -TDIClub Contributor
Joined
Nov 14, 2006
Location
Pas assez loin pour vider ma tank!
TDI
Jetta TDI 02
http://forums.tdiclub.com/showpost.php?p=3079412&postcount=91


Exhaust Bore size
36.60mm A/R=.65 on GT1749V and VNT15
37.26mm A/R=.61 on GT1749VA
38.23mm A/R=.61 on GT1749VB
38.65mm A/R=.62 on GT1749VC (Third generation vane)
40mm A/R=.74 on GTB1756VK (Third generation vane)
42mm A/R=.64 on GTB2056VL Volvo (Third generation vane)
43mm A/R=.59 on GTB2056VK Q7 (Third generation vane)
44.5mm A/R=.74 on GTB2260VK (Third generation vane)


Compressor Exducer size
44mm trim=55.6 (32.8mm inducer) A/R=.46 compressor old VNT15 AFN and early AHF
49mm trim=44.8 (32.8mm inducer) A/R=.46 compressor GT1749V and VNT15
49mm trim=48 (34mm inducer) A/R=.46 compressor GT1749VA
49mm trim=54 (36mm inducer) A/R=.46 compressor GT1749VB
48.9mm trim=55.1 (36.3mm inducer) A/R=.50 compressor GT1749VC (Third generation vane)
56mm trim=55 (41.5mm inducer) A/R=.45 compressor GTB1756VK (Third generation vane)
56mm trim=50 (39.6mm inducer) A/R=.45 compressor GTB2056VL Volvo (Third generation vane)
56mm trim=55 (41.5mm inducer) compressor GTB2056VK Q7 (Third generation vane)
60mm trim=55 (44.5mm inducer) A/R=.45 compressor GTB2260VK (Third generation vane)



P.S.: possible small error (+-0.1mm) if you have official number, please PM me!




Dieseleux
 
Last edited:

hatemi

Veteran Member
Joined
Aug 25, 2005
Location
Finland
TDI
Audi A6 4F 3.0TDI
GT1749VC and GTB1756VK exhaust housings are interchangeable. Even tough the turbine wheels are different size the housings and CHRAs fit both way around. But if you chose VK you will need to change it to vacuum actuator.
 

diffas

Veteran Member
Joined
Jun 25, 2008
Location
Finland
TDI
B5q A4 Avant 2.5TDi+, B7q A4 Avant 3.0TDi
Audi 204-233hp versions use KKK BV50. GTB2260VK is used in 240hp version.
 

Alcaid

Veteran Member
Joined
Sep 5, 2006
Location
Norway
TDI
See signature
A real shame there is no compressor map available for most (all?) of them... :(
 

Rub87

Top Post Dawg
Joined
Dec 10, 2006
Location
Belgium
TDI
Ibiza '99 90HP
Turbine:

In: 50
Ex: 44.5
11 vanes, width 7mm

Comp:

In: 43
Ex: 59

is from kkk bv50 3.0L, early 2.7 use equal hotside but slightly smaller compressor inducer
 

JST

Veteran Member
Joined
Apr 21, 2009
Location
The Netherlands
TDI
Alfa Romeo Giulia 2.2 jtd 180 AT8
GTB2056v for Alfa 2.4 JTDm (210 Hp)

Compressor (6 main blades) inducer/exducer: 39.6mm / 56mm
Turbine (9 blades) exducer/inducer: 43mm / 47mm

Compressor A/R: 0.56
Turbine A/R: 0.7

Looks like quite a small compressor inducer & turbine inducer compared to other GTB2056's.
 

Rub87

Top Post Dawg
Joined
Dec 10, 2006
Location
Belgium
TDI
Ibiza '99 90HP
same compressor as 2056vl from volvo I guess, works very well for 240-250hp max
 

JST

Veteran Member
Joined
Apr 21, 2009
Location
The Netherlands
TDI
Alfa Romeo Giulia 2.2 jtd 180 AT8
same compressor as 2056vl from volvo I guess, works very well for 240-250hp max
Yes indeed, compressor wheel is the same part nr as the volvo one.

Alcaid said:
Not the same compressor A/R?
Larger area for the Alfa one, not that interesting for performance though.

@dieseleux: Do you have the turbine inducer size of the Volvo GTB2056 ?
 

T3-UN1

Well-known member
Joined
Jun 28, 2009
Location
Germany
TDI
VW T3 Vanagon AFN
GTB1749VK from 4.2 TDI

VAG Number is 057145722N, Garrett Number is 765312-2

compressor wheel:
36mm inlet
49mm outlet
12 blades

turbine wheel:
38mm outlet
43mm inlet
9 blades

Exhaust side interchangable with gtb1756vk ;)
Electronic actuator is pwm controlled...
Watercooled CHRA!



 
Last edited:

TDIMeister

Phd of TDIClub Enthusiast, Moderator at Large
Joined
May 1, 1999
Location
Canada
TDI
TDI
I thought it might be helpful for people to understand the effect of compressor selection criteria like exducer diameter, trim and A/R ratios. This has been long overdue, so here goes.

Below I compare maps from the same manufacturer with same technology and change only one parameter at a time. I am not at liberty to share more than what's already presented below, so don't ask.

First, I compare the effect of changing the exducer diameter, while the trim and A/R ratio are kept the same. I look at 46, 49 and 56mm compressors of the same generation and family respectively in the following 3 pics:









Increasing the exducer diameter moves the entire map toward higher mass flows. The surge line (in bold red dash-dot) also moves to the right. The achievable pressure ratio does not change much because it is not a function of wheel diameter alone but rather the tip speed, which is proportional to the diameter multiplied by the angular speed, and blade properties. Although the lines of constant RPM are not labelled, a smaller wheel must turn at higher RPM in order to achieve the same pressure ratio.


Next I look at an entirely different family of compressors and vary only the trim. I look at 44, 48 and 52 trims of the same exducer diameter and A/R ratio:










It is apparent that as the trim increases, the map shifts over to the right toward higher mass flows, including the surge line.

One may observe that the upper boundary of pressure ratio is actually lower in this family of 67mm compressors than the smaller compressors previously presented. There is nothing to be interpreted or concluded by this alone, since the compressors in this latter comparison are from a different family.

One may also observe that the 56mm, 60 trim compressor flows almost the same as the 67mm, 48 trim unit, plus the former allows a higher pressure ratio and significantly better surge margin. Why is that so and in light of this, why would one choose the larger compressor and not select the compressor just based on trim? Well those are good questions. The first obvious answer is that this illustrates that a bigger turbo is not necessarily better. Within certain limits the engine developer can select between several different exducer diameter and trim combinations that give the desired flow capabilities. Recall, however, that the smaller compressor wheel will need to spin at higher RPMs in order to achieve the same pressure ratio, therefore the turbine must also be suitably matched with the compressor and the engine! A larger exducer diameter will also have a higher moment of inertia, which will affect turbo lag.


Varying the compressor A/R ratio has little effect on the compressor map, as can be seen in the two maps placed side-by-side below. The same generation, family, exducer diameter (52mm) and trim (55) are compared with two different A/R ratios - 0.53 and 0.45. They both look almost identical.

 

Alcaid

Veteran Member
Joined
Sep 5, 2006
Location
Norway
TDI
See signature
Varying the compressor A/R ratio has little effect on the compressor map, as can be seen in the two maps placed side-by-side below. The same generation, family, exducer diameter (52mm) and trim (55) are compared with two different A/R ratios - 0.53 and 0.45. They both look almost identical.

So what actually changes by varying compressor A/R? Looks like the one with lower A/R actually would be able to produce a higher PR still very efficient if it had'nt been for the RPM limitation.
 

TDIMeister

Phd of TDIClub Enthusiast, Moderator at Large
Joined
May 1, 1999
Location
Canada
TDI
TDI
The two particular maps showing different A/R ratios are too similar to draw any hard conclusions between them. However, when a choice is available, smaller A/R compressors -- other parameters being equal -- tend to be deliver slightly higher pressure ratios for a given shaft speed and mass flow. But again, the differences shown above are practically negligible.
 

shakescreek

Veteran Member
Joined
Oct 14, 2005
Location
B.C. Canada
TDI
18'6" welded aluminum jetboat with pd160, gtb2056vl, and tuning by rub87, 2003 chev blazer with bhw swap, 2000 jetta alh with gtd1752 vrk, .240 injectors, 11mm pump, fmic, 6 spd manual
What about the hot side? Any maps to show the effect of changes to the A/R on the turbine side.
 

TDIJetta99

Top Post Dawg
Joined
May 17, 2005
Location
Port Jervis, New York, USA
TDI
03... Faster than yours =]
The BMW GT2260V that chippednotbroken has on his, the compressor A/R is .61.. I see it as not available in the picture a few posts up.. figured I'd offer that info..
 
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