There was a big debate on 1.8Turbo .com the other day .It caused one of the members to do something no one has done before.He actualy contacted 3k's Turbo Borg Warner.
It even shows My turbo the imfamous AWW hidden power unit and goes on to explain how a Ko3s (witch does not exist ) is an inprovement and better choice than a ko4
Quote:
Dear Sir,
thank you for your interest in our products.
First of all, we don't produce any turbo that we call K03S. But I hope I can
answer your questions with the following explanations.
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 AWW
Consequentially, putting a 180 hp turbo on a 150 hp engine will not bring
about any change in performance, but putting on a K03-052/053/058 instead of
the older versions will bring a slight improvement in engine efficiency.
Additionally, with re-mapping the ECU you can achieve about 215 hp without
danger of overspeeding the turbo. With the older turbos, 195 hp is the
limit.
With the K04 that's also commonly used (5304 950 0001) the power output
should not be more than 220 hp. That means, changing a K03-052/053/058
against a K04 does not make a lot of sense.
I hope that these details answer your questions. If you need more info, one
of our service distributors will be glad to help you. Their addresses are on
our website http://www.turbodriven.com.
Mit freundlichen Grüßen/Best regards,
BorgWarner Turbo Systems GmbH
Sales IDS - Technical Support
Christian Seibert
They told me the same thing about 2 years ago when I emailed and called them looking for compressor maps. They would not give me the compressor maps, however they gave me a very similar response to this.
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Old Ride - 01' WE Jetta @ 22 PSI <---Click here for pics and mods Best 1/4 mile: 14.11 @ 100.6mph - 213whp - 266lb/ft
It has a lot of validity to it. Unless your going to swap the manifold and go with the 225TT K04, you end up paying $1000 for 10-15whp. Money is better spent otherwise, you can buy a manifold and small T3 for less than that and make 240whp on stock fueling...
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Old Ride - 01' WE Jetta @ 22 PSI <---Click here for pics and mods Best 1/4 mile: 14.11 @ 100.6mph - 213whp - 266lb/ft
Money is better spent otherwise, you can buy a manifold and small T3 for less than that and make 240whp on stock fueling...
Exactly, and cost is about the same... only you are no longer at a dead end as far as upgrades and available power.... I dont understand why people spend the 1300+$ to just get themselves at another dead end and to limit their options....
Main word blows is correct sir. Nice to know the parts are intercahngible though if one of us A-towners come across a RS6 in the bone yard. Wich might happen I already came across 2 Rs4's
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Interesting Ko series turbo info
Linear Mode
