k04/997 hybrids?

[hyperlight944]

soo im wondering if the k04 /997 hybrids still retain the porsches vta .....variable turbine adjustment? because if they did it would be sweet lol

[Shomegrown]

soo im wondering if the k04 /997 hybrids still retain the porsches vta .....variable turbine adjustment? because if they did it would be sweet lol

lol, yeah totally sweet lol wow

Do you know what a hybrid turbo is? Just askin.

[Luca12]

no it does not.

[hyperlight944]

yes i know what a hybrid turbo is jerk its 2 turbos turned into one usually using the best parts from each turbo or what you can to make the turbo that fits the best it can be ...... also i have found out the k04/997 hybrid doesnt retain this thanks for your time and immature answers .. way to keep people of the forums

cheers

daniel

[Shomegrown]

yes i know what a hybrid turbo is jerk its 2 turbos turned into one usually using the best parts from each turbo or what you can to make the turbo that fits the best it can be ...... also i have found out the k04/997 hybrid doesnt retain this thanks for your time and immature answers .. way to keep people of the forums

cheers

daniel

On these cars, the only thing that gets replaced on the hybrids is the compressor wheel. The housings and turbine side stay OEM K04 (with maybe mods thrown in).

[hyperlight944]

thank you for the good response ... the other guy .. your stil a jerk lol but my k04's went bad after like half a yr ... and im lookin in worst case scenario that the dont warranty my turbos ....... i have 3 options if they dont .... build em back like they were originally 2. build k04/997 hybrids or 3. build k04/997 hybrids with rs6 CHRA's if this is even possible .. i think it would be a monstorous turbo setup .... the reason being is that you upgraded the compressor turbine and the hot side with the rs6 CHRA's any thoughts or opinions on this subject would be great ... and plz no more jerk comments ....

cheers

--daniel

[generationjdm]

thank you for the good response ... the other guy .. your stil a jerk lol but my k04's went bad after like half a yr ... and im lookin in worst case scenario that the dont warranty my turbos ....... i have 3 options if they dont .... build em back like they were originally 2. build k04/997 hybrids or 3. build k04/997 hybrids with rs6 CHRA's if this is even possible .. i think it would be a monstorous turbo setup .... the reason being is that you upgraded the compressor turbine and the hot side with the rs6 CHRA's any thoughts or opinions on this subject would be great ... and plz no more jerk comments ....

cheers

--daniel

I wont be a jerk but heres the facts that people seem to miss, the RS6 center section is the same as the rs4 center the only difference is the rs6 comp wheel being a tad larger. Also putting a large comp wheel on will do hardly anything for you with the turbine side being so restricted/small.. It doesn't matter how large of a comp wheel you put on means zero with that hot side and manifolds.. Rebuild the turbos and call it good...

[hyperlight944]

thanks shawn but isnt the rs6 hot side larger ....what i was saying is use the rs6 hot side and put it on rs4 k04's and then make the turbine a 997 ? wouldnt that be the best overall?


to be completely honest im pretty sure borg warner is gonna warranty them since ive only had them on for less than half a yr so we will see ... oh and shawn about the gt kit i will be doing it .. but a in a yr or 2 when i have more flow comming in and when my e30 m3 with an obd1 e36 m3 motor in it with possibly a turbo is done lol

cheers

--daniel

[red4kq]

yeah rs6 hotside is a little bit larger, and there are hybrids in rs4k04's that take the full rs6 chra.

[generationjdm]

The turbine housing on the RS6 is larger not the exhaust wheel, I've measured them and the difference between the turbine wheels where under 1mm overall which is nothing at all...

[generationjdm]

yeah rs6 hotside is a little bit larger, and there are hybrids in rs4k04's that take the full rs6 chra.

Ya there is, and the turbine wheel is the same so where still talking about the comp wheel which will yield hardly anything.... You need a complete package for a turbo to work properly ie the turbine wheel needs to be setup to the turbine housing and that matched to the comp side, maybe not in that order of things but they all need to work together. Not to mention the stock ex manifold...

If you had this super large turbine wheel and housing then you had this tiny little comp wheel and compressor housing would serve you zero purpose just like the other way around....

Someone is finding this out the hard way...

[audspeed]

I've done it before, it uses 997 compressor wheel that actually is k06 wheel, same wheel used on k04 upgrade on 2.0T FSi engine (New S3 and TT-s). The problem is on this upgrade will need to go with RS6 compressor cover or some custom ones. The regular k04 RS4 turbos does not have enought material to make it fit the 997 wheel. Also the RS6 center has both wheels bigger than RS4, That's what we do on our RS4/RS6 hybrids, it needs to be machine both sides to make it fit the bigger RS6 CHRA. RS4/RS6 turbos with 997 compressor wheel upgrade that we make does 30-40 more HP than RS4/Rs6 ones

[generationjdm]

Ruben, I measured the rs6 ex wheel and the rs4 exhaust wheel and there 99.90 the same size... under 1mm overall diameter which is a hair...

[Clay @ Kinetic]

Ruben, I measured the rs6 ex wheel and the rs4 exhaust wheel and there 99.90 the same size... under 1mm overall diameter which is a hair...

Size matters, but thats not everything. You can have the same wheel inducer and exducer dimensions, but contours of the blades can be different ie: more aggressive fin design vs less aggressive design, which is most likely what Rubens is referring to.

Thats why GT wheels can be smaller than T series wheels and produce similar outputs, not all wheels are created equally.

[generationjdm]

But where talking about the same ex wheel AND design.. Clay you would have to agree that if the turbine side is restricted/tiny the comp wheel being enlarged means hardly anything.

[Clay @ Kinetic]

But where talking about the same ex wheel AND design.. Clay you would have to agree that if the turbine side is restricted/tiny the comp wheel being enlarged means hardly anything.

If I was inclined to, I could get part #'s and compare the dims, but thats too much trouble. If the profile is the same and the design, then an apple is an apple right. But if the profile is the same and the design is different then its apples to oranges, thats all i'm saying

[02alltoad]

i found this on jh motorsports.com

RS6 turbos (Bolt-On) for 2.7T-Special Order-Non Returnable
Includes: 2-new modified OEM RS6 turbos modified to bolt on to a B5 S4, 2- new down pipe flanges for proper exhaust sealing

Specs: As follows in comparison to a regular RS4 K04. compressor wheel RS4: 40mm inducer, 51mm exducer compressor wheel RS6: 42mm inducer, 56mm exducer The turbine housing a/r is much larger. There will be a lot of gains on the hotside due to its larger size. Works with K04 inlet pipes and stock exhaust manifolds, coolant and oil lines

[generationjdm]

I think your missing the point, he said hybrid not straight RS6 turbo... So the hybrid would not use the rs6 turbine housing which is were all the gains would come from

[02alltoad]

I think your missing the point, he said hybrid not straight RS6 turbo... So the hybrid would not use the rs6 turbine housing which is were all the gains would come from

oh ok i thought it was rs4 vs rs6

[02alltoad]

Ruben, I measured the rs6 ex wheel and the rs4 exhaust wheel and there 99.90 the same size... under 1mm overall diameter which is a hair...

like this. cause im trying to decide on what turbos to get as well

[bruddha]

Revisiting. Has anyone successfully fitted 997 compressor wheels into K04 housing?