K03-K03s turbo numbers/ Parts Info.

[richw911]

All the following turbos have the same installation dimensions and
thermodynamical performance. The differences are only in the actuator that
opens the turbine bypass valve:
K03-011 (5303 988 0011) 150 hp, 65 N actuator
K03-026 180 hp, 85 N actuator
K03-035 180 hp, 85 N actuator
K03-044 150 hp, 65 N actuator
K03-045 156 hp (Ibiza Cupra), 85 N actuator with 2 ports
K03-049 150 hp (Sharan/Alhambra), 65 N actuator

The 180 hp versions have an actuator with a higher opening force due to the
higher exhaust gas pressure (which is a consequence of the higher boost
pressure). Otherwise the valve would be pushed open by the exhaust gas
pressure.

The following turbos are a further development (since 2000) and have an
improved and slightly larger compressor while using the same turbine (still
with the same installation dimensions):
K03-052 180 hp, 85 N actuator
K03-053 150 hp, 85 N actuator
K03-058 150 hp/180 hp, 85 N actuator

Ko3 - 97-2000

COMPRESSOR WHEEL
Inducer: 33.6mm
Exducer: 46mm
Tip height: 3.7mm

TURBINE WHEEL
Inducer: 45mm
Exducer: 38mm
Tip height: 6.8mm
Blades: 11

Ko3S - 01+

COMPRESSOR WHEEL
Inducer: 38mm
Exducer: 51mm
Tip height: 4.4mm

TURBINE WHEEL
Inducer: 45mm
Exducer: 38mm
Tip height: 6.8mm
Blades: 11

Ko4-015

COMPRESSOR WHEEL
Inducer: 35mm
Exducer: 50mm
Tip height: 3.7mm

TURBINE WHEEL
Inducer: 50mm
Exducer: 42mm
Tip height: 6.4mm
Blades: 11



See here for some more info:

http://www.seatcupra.net/forums/showthread.php?t=35228

Which engines?

Typically K03 are on AGU engine codes on lots of early VAG cars.

K03s =  AUM AUQ engine codes from the following :

Mk1 Leon Cupra,Seat Ibiza Cupra, Mk1 Skoda Octavia VRS, Audi A3, A4, Boras


KO3s turbo numbers:

KO3-052, 053,058 or (K03/82 from a Polo GTI) For k03s

If you look into the inlet, the ko3 has 12 fins, the ko3s has 8.

The reason behind the different part numbers was due to one being from the Octavia (silenced version), one from the AUM/ARZ engined Golf/A3 and the other was from the 180bhp Anni Golf/Cupra



K03s at the top of the pic, K03 at the bottom

Boost pressure:
AUM (150bhp) - 0.6bar / 8.7psi
AUQ (180bhp) - 0.8bar / 11.6psi

1bar = 14.508psi

[MikeGTI...]

Hello, how do I find these Turbo numbers?  Do I have to take out the Turbo or can I find out the info from somewhere else on the car?

Thanks

Mike

[richw911]

Hello, how do I find these Turbo numbers?  Do I have to take out the Turbo or can I find out the info from somewhere else on the car?

Thanks

Mike

Blue metal tag on the turbo.

Its impossible to read when on the car unless you remove the TIP and have very good eye sight as its rather tight.

 

[MaXXeH]

hi lads there was a list of part numbers around here some where! to replace the k03 turbo.

i need all of these,

[richw911]

www.jwelty.com/dubtuning/engines/18t.html 

[Rhyso]

www.jwelty.com/dubtuning/engines/18t.html 

where do you find these threads Rich? 

i think you should have a google type sig like me 

[richw911]

www.jwelty.com/dubtuning/engines/18t.html 

where do you find these threads Rich? 

i think you should have a google type sig like me 

lol lots of links i have stored 

Rich the link king 

[Wazzzer]

lol asked this ages ago so it's answered my query too 

[richw911]

lol asked this ages ago so it's answered my query too 

2 for 1 

[MaXXeH]

anyone know where u can buy these parts online?  as i need to go to VW to order them as they wont do it over the phone and i cant get any time of work!