What is a Ko4-001?

[cuprabaz]

Like the lads said in the first few post mate, maybe 10-15bhp.

If it's new and from ebay stay well clear. They are fake, they go like hell for about 5 mins then everything melts, no joke!

 

[Willie]

http://forums.vwvortex.com/zerothread?id=2099625

vortex saves the day again

 

[Phillc]

LOL the sites down.

 

[Phillc]

Like the lads said in the first few post mate, maybe 10-15bhp.

If it's new and from ebay stay well clear. They are fake, they go like hell for about 5 mins then everything melts, no joke!

Right ok yeah its on ebay and new but not a company selling it, its a private seller.

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=220516407640&ssPageName=STRK:MEWAX:IT

 

[Viking]

Maybe they bloke selling it bought a Chinese copy, realised his mistake, and is now flogging it on to claw some cash back. There was a thread on here that told you how to check whether it was a fake or not, something to do with the data stamp or something.

Although with an Ebay name like that he may be a member on here.

 

[cuprabaz]

I was told by Backdraft that the k04-001 was an VAG upgrade option turbo and was very similar to a ko3s. Totally different to the ko3/ko3s hybrids(ko4 internals)

That name plate does sound a little ropey to me.

This is a statement from Borg Warner Turbo Systems:

"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. "

And i'm pretty sure the k04(5304 950 0001) is the ko4-001.

 

[adam cupra 20vt]

I thought Jamiebennett had a CR KO3s hybrid which was the bigger K04 internals inside the KO3s shell?

I also think he had to have bigger injectors, MAF sensor, TIP? bigger downpipe? manifold, maybe fuel pump? and I know you need FMIC

Would be very interesting to know if you need all of the above with the K04 001 and also what the std injectors, manifold etc are capable of producing.

I know Phil already has manifold, FMIC but would be interesting to know for the rest of us so people know weather its a cost effective mod or not

 

[Damoegan]

I thought Jamiebennett had a CR KO3s hybrid which was the bigger K04 internals inside the KO3s shell?

I also think he had to have bigger injectors, MAF sensor, TIP? bigger downpipe? manifold, maybe fuel pump? and I know you need FMIC

Would be very interesting to know if you need all of the above with the K04 001 and also what the std injectors, manifold etc are capable of producing.

I know Phil already has manifold, FMIC but would be interesting to know for the rest of us so people know weather its a cost effective mod or not

The k03 hybrid is essentially a LCR/TT k04-023 inside a k03 shell. You need LCR/TT injectors, MAF and fuel pump. You use a normal k03/s high flow downpipe with it. FMIC also.

A k04-001 is only flows slightly more than a k03s so normal LC/mk4 FR/Cupra MAF, injectors pump etc. Normal stage 2 mods realy for a k04-001.

 

[cuprabaz]

The k03 hybrid is essentially a LCR/TT k04-023 inside a k03 shell.

If you get a CRTurbo's one they use the RS6 ko4 part which are the biggest of the ko4 range, or at least they did when called them eariler in the year.

 

[Moffat]

Sorry to hijack, but when you lot have been mentioning some of the upgrade turbos not having the EGT (exhaust gas temp ?) probe bit, it rang a bell. My Cupra R has, what has been said to be the EG probe, wrapped up and tied out the way uderneath the inlet manifold, so it's obviously not in the turbo. It's recently been in the garage with the turbo off, for an unrelated reason, but i got one of the lads to check the turbo over to see if there's anywhere that it should be screwed into. i've just been speaking to him today, and he said there was nowhere that is missing the EGT probe. What turbo could my car have on it?

 

[CupraJ1]

Maybe they bloke selling it bought a Chinese copy, realised his mistake, and is now flogging it on to claw some cash back. There was a thread on here that told you how to check whether it was a fake or not, something to do with the data stamp or something.

Although with an Ebay name like that he may be a member on here.

Wished I'd seen this thread before clicking the 'buy it now' have now sent the cancel it now please email to the seller... still least am better off 250 smackers and no cheap chinese turbo parts rattling around inside the engine!

Learn from my mistake.. doh!

 

[jamiebennett81]

lol, I am popular I see

I originally bought a k04-001 from BDMS a while ago, thinking it was a k04 (225 type engine) which bolted onto a k03 manifold....due to lack of research and my trigger happy "buy now" button at the time

When I realised it was not the turbo I thought it was, it was returned to BDMS

The turbo is a Borg Warner off the shelf turbo.

The research that I did do was on the Vortex forums. They seemed to rave about it and some quoted 260bhp.....but then I take what they say on the Vortex forums with a large pinch of salt, and I warn anyone else to do the same when browsing their forum....

The k04-001 is reported to produce slightly more power than the k03s, although I am loosely going on what the yanks are spouting about. I cant remember the exact measurements but I think the inlet and turbine is slightly larger.....

however there is no point buying a k04-001 and then hybridizing it, as you can buy an old k03 (saving yourself money) and give it the same treatment, and both turbos will then be exactly the same, producing the same power

I run a hybrid K03 from CR Turbos, installed and mapped by Badger5, and what a great turbo it is

see my review here

http://www.seatcupra.net/forums/showthread.php?t=222425

I am yet to have a RR yet, as I am fixing pipework amongst other things, but I hope to have some results early next year

I hope that clears things up a little

 

[evans1089]

Sorry guys but, I've just read this thread as i have also seen the turbo on ebay.
And i am wondering what options there are regarding the k04-001.
What bhp are you claiming that the k04-001 would make with lcr injectors, fuel pump, and usual, breathing mods and IC?
After my turbo upgrade i doubt i'd be having another. So would this k04 be worth it?

Any info would be great please

 

[slappy_dunbar]

Any info would be great please

How about this then:

short version
The K04-001 (OEM 5304-950-0001) was introduced in the mid '90's as an aftermarket upgrade to the K03 series of turbos for transversal engines. At the time, K03 turbos carried 2072-series compressors and smallish 45/40 turbines. The K04-001, while identical in fabrication materials and form to its smaller cousins, featured a larger 2075-series compressor. This series of wheel also introduced a new blade design which was more efficient. The turbine was a bit larger as well, at 46/42. Not dramatic, but bigger.

Sometime in 2001 KKK introduced the turbo we know colloquially as the K03s (and formally as the 5303-988-0052). It incorporated a muffler and the more-modern 2075 compressor from the -001, rendering the "upgrade" K04 somewhat irrelevant.


long version
5303-988-0052 (AKA K03s)
Compressor part no. 5304 123 2029 (this wheel used in all* 2001+ 1.8t transversal and B6 Quattro)
Compressor size code/Geometry K04-2075E
Inducer: 38.1 (75% of exducer)
Exducer: 51
Tip height: 4.4
Blades: 4 long/4 short
Turbine part no. 5303-120-5037 (used in virtually all 2001+ K03)
Exducer: 40.34
Inducer: 45
Tip height: 6.8
Blades: 11 long

5304-950-0001 (AKA K04-001)
Compressor part no. 5304 123 2010 (this wheel also used in K04-15 upgrade for longitudal)
Compressor size code/Geometry K04-2075E
Inducer: 38.1 (75% of exducer)
Exducer: 51
Tip height: 4.4 (This information is not published; I'm making an educated guess based on the "E' geometry shared with -2029)
Blades: 4 long/4 short (typical of E Geometry wheels)

Turbine part no. 5304 120 5023 (used in K04-15 as well)
Exducer: 42
Inducer: 46
Tip height: 7.6
Blades: 11 long

*excepting Audi 225TT

You can find quite a bit more at the Vortex, to which I'm inexplicably unable to provide a link.

 

[evans1089]

How about this then:

short version
The K04-001 (OEM 5304-950-0001) was introduced in the mid '90's as an aftermarket upgrade to the K03 series of turbos for transversal engines. At the time, K03 turbos carried 2072-series compressors and smallish 45/40 turbines. The K04-001, while identical in fabrication materials and form to its smaller cousins, featured a larger 2075-series compressor. This series of wheel also introduced a new blade design which was more efficient. The turbine was a bit larger as well, at 46/42. Not dramatic, but bigger.

Sometime in 2001 KKK introduced the turbo we know colloquially as the K03s (and formally as the 5303-988-0052). It incorporated a muffler and the more-modern 2075 compressor from the -001, rendering the "upgrade" K04 somewhat irrelevant.


long version
5303-988-0052 (AKA K03s)
Compressor part no. 5304 123 2029 (this wheel used in all* 2001+ 1.8t transversal and B6 Quattro)
Compressor size code/Geometry K04-2075E
Inducer: 38.1 (75% of exducer)
Exducer: 51
Tip height: 4.4
Blades: 4 long/4 short
Turbine part no. 5303-120-5037 (used in virtually all 2001+ K03)
Exducer: 40.34
Inducer: 45
Tip height: 6.8
Blades: 11 long

5304-950-0001 (AKA K04-001)
Compressor part no. 5304 123 2010 (this wheel also used in K04-15 upgrade for longitudal)
Compressor size code/Geometry K04-2075E
Inducer: 38.1 (75% of exducer)
Exducer: 51
Tip height: 4.4 (This information is not published; I'm making an educated guess based on the "E' geometry shared with -2029)
Blades: 4 long/4 short (typical of E Geometry wheels)

Turbine part no. 5304 120 5023 (used in K04-15 as well)
Exducer: 42
Inducer: 46
Tip height: 7.6
Blades: 11 long

*excepting Audi 225TT

You can find quite a bit more at the Vortex, to which I'm inexplicably unable to provide a link.

Thanks for that. From what i've read, if your going from a stock k03, to an upgrade the k04 would be a better choice than the k03s? Correct me if i'm wrong please

 

[slappy_dunbar]

Thanks for that. From what i've read, if your going from a stock k03, to an upgrade the k04 would be a better choice than the k03s? Correct me if i'm wrong please

Yeah. If you look at the specs for the two, you will see the -001 still has a larger turbine wheel than the newer K03s. But as BorgWarner say themselves, the published max output for the two is only 5hp apart. Perhaps the -001 will hold a higher horsepower for longer as well. But they don't attempt to make the case for the -001 being a valid "upgrade" any longer. Not for the K03s, anyway. And remember the "newer" K03s is pushing 10years of age. Pretty creaky.

From my point-of-view neither is worth installing in a car. There are other options.

 

[evans1089]

Yeah. If you look at the specs for the two, you will see the -001 still has a larger turbine wheel than the newer K03s. But as BorgWarner say themselves, the published max output for the two is only 5hp apart. Perhaps the -001 will hold a higher horsepower for longer as well. But they don't attempt to make the case for the -001 being a valid "upgrade" any longer. Not for the K03s, anyway. And remember the "newer" K03s is pushing 10years of age. Pretty creaky.

From my point-of-view neither is worth installing in a car. There are other options.

Interesting. Thanks again

 

[Damoegan]

Sorry guys but, I've just read this thread as i have also seen the turbo on ebay.
And i am wondering what options there are regarding the k04-001.
What bhp are you claiming that the k04-001 would make with lcr injectors, fuel pump, and usual, breathing mods and IC?
After my turbo upgrade i doubt i'd be having another. So would this k04 be worth it?

Any info would be great please

No need for LCR injectors or pump for a k04-001...

 

[Phillc]

After my turbo upgrade i doubt i'd be having another. So would this k04 be worth it?

Any info would be great please

In a word, No, not as an upgrade only if you wanted to get a newer turbo to replace your worn out/damaged K03s.

 

[Willie]

So Phil, now the KO4-001 is off the list whats on the radar screen now?
Gotta be a GT28RS, get them pennies saved and get it done