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Model specific boards => Golf mk4 => Golf mk4 how to guides + info => Topic started by: richw911 on 05 October 2008, 20:37

Title: K03-K03s turbo numbers/ Parts Info.
Post by: richw911 on 05 October 2008, 20:37: 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

(http://images.forum-auto.com/mesimages/541093/k03s-k03.jpg)

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
Title: Re: K03/K03s turbo numbers/Info
Post by: MikeGTI... on 07 October 2008, 16:53: 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
Title: Re: K03/K03s turbo numbers/Info
Post by: richw911 on 02 January 2009, 19:40: Quote from: MikeGTI... on 07 October 2008, 16:53
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.
Title: turbo gasket part numbers!
Post by: MaXXeH on 30 March 2009, 21:01: hi lads there was a list of part numbers around here some where! to replace the k03 turbo.

i need all of these,

(http://www.kineticmotorsport.com/images/products/kngolf4installkit.jpg)
Title: Re: turbo gasket part numbers!
Post by: richw911 on 30 March 2009, 21:07: www.jwelty.com/dubtuning/engines/18t.html :wink:
Title: Re: turbo gasket part numbers!
Post by: Rhyso on 30 March 2009, 21:08: Quote from: richw911 on 30 March 2009, 21:07
www.jwelty.com/dubtuning/engines/18t.html :wink:

where do you find these threads Rich? :huh:

i think you should have a google type sig like me :grin: :grin:
Title: Re: turbo gasket part numbers!
Post by: richw911 on 30 March 2009, 21:11: Quote from: Rhyso on 30 March 2009, 21:08
Quote from: richw911 on 30 March 2009, 21:07
www.jwelty.com/dubtuning/engines/18t.html :wink:

where do you find these threads Rich? :huh:

i think you should have a google type sig like me :grin: :grin:

lol lots of links i have stored :grin: :grin:

Rich the link king :grin: :grin: :grin:
Title: Re: turbo gasket part numbers!
Post by: Wazzzer on 31 March 2009, 21:29: lol asked this ages ago so it's answered my query too :wink:
Title: Re: turbo gasket part numbers!
Post by: richw911 on 31 March 2009, 21:34: Quote from: Wazzzer on 31 March 2009, 21:29
lol asked this ages ago so it's answered my query too :wink:

2 for 1 :laugh:
Title: Re: turbo gasket part numbers!
Post by: MaXXeH on 01 April 2009, 17:59: 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! :huh:
Title: Re: turbo gasket part numbers!
Post by: Wazzzer on 01 April 2009, 23:32: why won't they do it over the phone? tell them they're being tw@s and to get them ordered!
Title: Re: turbo gasket part numbers!
Post by: MaXXeH on 02 April 2009, 12:36: tried twice now such a pain, they said they have been stung so many times people ordering parts but never come and get them! :sad:
Title: Re: turbo gasket part numbers!
Post by: richw911 on 02 April 2009, 19:55: Quote from: MaXXeH on 02 April 2009, 12:36
tried twice now such a pain, they said they have been stung so many times people ordering parts but never come and get them! :sad:

Pay with your card when you order...
Title: Re: turbo gasket part numbers!
Post by: MaXXeH on 02 April 2009, 20:26: tried dont take cards over the phone. Tried lol looks like i have to go up there at the weekend.
Title: Re: turbo gasket part numbers!
Post by: richw911 on 02 April 2009, 20:28: Quote from: MaXXeH on 02 April 2009, 20:26
tried dont take cards over the phone. Tried lol looks like i have to go up there at the weekend.

What really :shocked:

I ordered and paid for my Recaro seat sponge over the phone from VW :undecided:
Title: Re: turbo gasket part numbers!
Post by: Rhyso on 02 April 2009, 20:28: and the car industry wonders why its struggling :rolleyes:
Title: Re: turbo gasket part numbers!
Post by: MaXXeH on 02 April 2009, 21:02: it is just euro canterbury being an arse!
Title: Re: turbo gasket part numbers!
Post by: Wazzzer on 11 April 2009, 00:23: sorry to resurrect this but I've just compiled the correct list of all the parts you will need for a turbo change, K03 - K03s

Here they are and the quantity you will need.

1J0 253 115 R (turbo - downpipe gasket)
N 102 090 05 (nuts x 4)

N 013 812 8 (oil feed pipe washers x 2)
N 013 814 9 (water pipe washers x 4)

058 145 757 C (turbo oil return gasket)

06A 253 039 E (turbo - manifold gasket)
B 058 145 540 (bolts x 3)

058 253 039 L (manifold - head gasket)
N 902 002 01 (nuts x 13)

enjoy, Rich/Rhys can you put this in the maintenance section please? :smiley:
Title: Re: K03-K03s turbo numbers/ Parts Info.
Post by: Grand Master Patch on 09 September 2009, 22:05: Is there anything on that list that you don't need if you have a decat pipe with gaskets and bolts waiting?
Title: Re: K03-K03s turbo numbers/ Parts Info.
Post by: Wazzzer on 10 September 2009, 21:29: first 3 mate although I would recommend using an OEM metal gasket for the turbo to downpipe join as the one that comes with most decats is crap
Title: Re: turbo gasket part numbers!
Post by: G60GTI16V on 20 September 2009, 03:04: Quote from: richw911 on 02 April 2009, 20:28
Quote from: MaXXeH on 02 April 2009, 20:26
tried dont take cards over the phone. Tried lol looks like i have to go up there at the weekend.

What really :shocked:

I ordered and paid for my Recaro seat sponge over the phone from VW :undecided:

how much was this as mine could do with changing?
ta
Title: Re: K03-K03s turbo numbers/ Parts Info.
Post by: G60GTI16V on 20 September 2009, 03:07: how much does that list come to then roughly?
Title: Re: K03-K03s turbo numbers/ Parts Info.
Post by: Wazzzer on 20 September 2009, 12:22: £60 roughly
Title: Re: K03-K03s turbo numbers/ Parts Info.
Post by: G60GTI16V on 20 September 2009, 19:26: what motor is the best turbo? so i can ask around and grab one im guessing go for the K03-052 180 hp, 85 N actuator

also once this is all bolted on i can still drive it to get around on standard map cant i or will it be a trailer job and needs remap straight away?

nice one wazzer!
Title: Re: K03-K03s turbo numbers/ Parts Info.
Post by: Wazzzer on 20 September 2009, 21:21: standard map will be fine to drive on for a bit.

Turbo will be in the Octavia Vrs, Leon Cupra (not R), Anni or AUM Golf, Audi A3 with AUM to name a few
Title: Re: K03-K03s turbo numbers/ Parts Info.
Post by: Wazzzer on 08 October 2010, 17:28: updated with new part numbers and got rid of a few non essential bits :nerd:
Title: Re: K03-K03s turbo numbers/ Parts Info.
Post by: BG-MK4 on 19 September 2011, 07:23: Can anybody tell what is the purpose of this wide part at the of the K03S from the picture in the first post?
Title: Re: K03-K03s turbo numbers/ Parts Info.
Post by: richw911 on 19 September 2011, 20:30: Quote from: BG-MK4 on 19 September 2011, 07:23
Can anybody tell what is the purpose of this wide part at the of the K03S from the picture in the first post?

Its a silencer which is fitted to the newer k03's turbos :smiley:
Title: Re: K03-K03s turbo numbers/ Parts Info.
Post by: Wazzzer on 08 November 2011, 08:09: To be honest it doesn't do much silencing, mine still whistles away :laugh: