K04 Rebuild options? (BT/BAT guys flame away)

[mnkyA4]

YES I know BT/BAT is the way to go these days, but I have my hands on SK04 from a local guy that is going to sell for pretty cheap. What options are there in terms of rebuilding the K04 for max performance/output? I'm going to be going with the Unitronics tuning program w/034Motorsport doing a custom tune. Will any of the K04 internals from other variants work? I've searched with previous post but haven't got any real answers to mine. Thanks for the help.

yea i know K04 FTL!! hahaha

[romell]

i love tips=)

[F16HTON]

Is the SK04 dead?

[romell]

how much can i get a sko4 for or a used regular ko4?

see i want to do k04 or a gtrs and i got a lot of good inpout but dont really want to do swap outmy torqure converter at the moment (1500) but i mean. eh doing the gtrs is about the same cost.. just have to do a front mount and a manifold and other small stuff equalling of about 1000-1500 more.. so its worth it.. jus woried about my tq (sorry not to thread jack)

[mnkyA4]

as far as I know it isn't. The previos guy said it was running well. Is there a way to find out if its still usable? I spun the turbine and it "seems" like there isn't any play.

[romell]

i didnt know what "play" was until someone showed me. where thr turbine is the spindle try moving it around.. see if its stiff or it moves around.. everyone says oh i never beat on my car or never raced my car and blah blah.. but cmon.. u go a upgraded turbo for a reason. not to have bragging points..but really to use the car. so yeah.

[mnkyA4]

I'm a littel worried about the torque spike as well, but hopefully witht he custom tuning it can calm it down, but not sure. I know cost wuise doing the K04 will prbably be slightly less then a GTRS but I wouldn't make real use of the GTRS power since its a city driven car.

[romell]

yes which is ture i agree.. tq spikes u shoujldve have a proble.. i know a lot of tip guys running k04s with no problms on tranny or tq... butreallly with an extra 1500 u can have a gtrs... which is stronger... more power.. more fun.. now agreed if u have to upgrade the tq then eh.. not worth it.. im also thinking to go k04. because i do love the put u inthe seat feeling.. but ive driven in the city i stay in high rpms.. i love when the car pulls. soo nice. i think ud enjoy that with the gtrs

[HTA A4]

GT71r daily drivers FTW!

[Groove1797]

sko4's are a great balance between a ko4 and a BT. I am envious you have found one.

[mike-2ptzero]

sko4's are a great balance between a ko4 and a BT. I am envious you have found one.

Is that when they aren't falling apart?

[Groove1797]

Is that when they aren't falling apart?

The EO5 falls apart but the original sk04 was a specialty turbo produced from BW...

[mnkyA4]

What is the main difference between the sk04 and a k04-15?

[mike-2ptzero]

The EO5 falls apart but the original sk04 was a specialty turbo produced from BW...

Sorry to tell you but you are a bit wrong. The turbo was sold by Neuspeed and Kinetic IIRC.
The "Neuspeed Super K04" was a hybrid turbo using a larger wheel and a machined compressor housing. They sold them and then stopped selling it because it had problems staying together.


The larger K04 that comes from BW is sold thru MTM and Dahlbach, it cost more money they a GT series turbo. That is the K04 that Jet Jockey was running his car.


Here it is directly from Neuspeed.

THE SUPER K04 IS HERE!
Camarillo, CA -- Thursday, April 15, 2004

If you own a 1.8T Audi or Volkswagen and want a more power than the existing K04 turbo kits on the market, but don't want to pay $3000 or more for a Stage III kit, then the NEUSPEED Super K04 turbo may be your answer.

Last summer we began testing a new K04 hybrid on both the longitudinal and transverse 1.8T engines. The results have been very positive and two versions of the kit are now available.

The Super K04 starts out as a brand new K04-001 (Golf/Jetta/Beetle/TT) or K04-015 (Audi A4 & Passat B5) turbocharger, obtained directly from Borg Warner Turbosystems. Next, the turbo is disassembled. The shaft, compressor and turbine wheels are removed as well as the compressor housing. The compressor housing is precision machined in preparation for re-assembly with replacement components. A new, specially designed compressor wheel is reinstalled and the shaft assembly is re-balanced. The compressor wheel is not only larger in diameter, but also features a proprietary blade profile.

Along each step of the process, quality control procedures are executed to ensure that the finished product is ready for installation in the vehicle with no further modifications required. There are no adapter plates or adapter fittings to bolt onto the turbo. The Super K04 mates to the factory exhaust manifold and downpipe patterns seemlessly. The factory oil and coolant lines bolt in perfectly just as they did with the O.E. turbo.

[mnkyA4]

Thanks mike-2ptzero. What area's of the sK04 where not staying together?

[mike-2ptzero]

Balancing.

[Groove1797]

Just reconfirming my point! The ORIGINAL sko4 was produced from BW. The Neuspeed super ko4 was produced from a ko4 body and failed repeatedly. The EO5 was produced from Eurocode (out of a ko3 body) and was also a sack of shit. I just put those two in the same league.... The sack of crap league. A true sko4 will still sell for approx a grand and if this is what he has, I am jealous.

[mike-2ptzero]

Just reconfirming my point! The ORIGINAL sko4 was produced from BW. The Neuspeed super ko4 was produced from a ko4 body and failed repeatedly. The EO5 was produced from Eurocode (out of a ko3 body) and was also a sack of shit. I just put those two in the same league.... The sack of crap league. A true sko4 will still sell for approx a grand and if this is what he has, I am jealous.

Neuspeed came out with their "Sk04" aka super K04 before MTM/Dahlback started selling the larger K04 from BW and that turbo was never marketed as a Sk04. This is the point I was trying to make. Only A4 I know that has ever ran the larger K04 from MTM is Jet Jockey and he bought that K04-X (as he called it) back in 2006 which is well after Neuspeed stopped selling the Sk04, Jet Jockey he is now moving onto a GT28rs.

There was also a O.CT K04 that was slightly larger then the K04-15.


The E05 was not produced by Eurocode, they sold it just like Greedspeed and ABD. The E05 was a Eurospec product as you can see in the picture below.



Seems you have all your info mixed up.

[Renga]

Neuspeed came out with their "Sk04" aka super K04 before MTM/Dahlback started selling the larger K04 from BW and that turbo was never marketed as a Sk04. This is the point I was trying to make. Only A4 I know that has ever ran the larger K04 from MTM is Jet Jockey and he bought that K04-X (as he called it) back in 2006 which is well after Neuspeed stopped selling the Sk04, Jet Jockey he is now moving onto a GT28rs.

There was also a O.CT K04 that was slightly larger then the K04-15.


The E05 was not produced by Eurocode, they sold it just like Greedspeed and ABD. The E05 was a Eurospec product as you can see in the picture below.



Seems you have all your info mixed up.

I am running a Dahlback K04-5.88! No dyno, sorry!