Normal vs hybrid turbo

[emery1990]

Whats it best to get, i had a person say to me that a hybrid turbo has just got lots of hype about it being so much better when infact a k04 would get me up 250bhp aswell ?.

Whats the price difference, labour a k04 would be cheaper as its just a straight swap isnt it?

also where to get them, cant find a k04 one on google anywhere, found hybrid one on that site, forgot its name, in cardiff i think.

 

[HDi fun]

With a hybrid turbo you are getting into very specialist tuning niches. It shouldn't be the first thing on your shopping list for tuning. Hybrid turbos are to be used in very specific situations and the turbo will need to be built to precise specifications to suit your intended usage.

You'll already have uprated braking and suspension, cooling and possibly fuel system before you're considering this route.

A turbo that is too high specced for the engine is useless, even if it doesn't cause lag or latency in response you can't exploit such a device if your engine is not set up to take full advantage of it. You'd never get it to spin fast enough without adequate exhaust flow and you won't get that, even with free flow systems etc. if the fuel system can't bung in enough juice to get the exhaust volume up high enough.

 

[emery1990]

IM going to go for a k04 turbo anyway now after getting more help, they seem very dear to setup etc more labour. I understand ill need bigger injectors and better airflow, also another intercooler. The cars tailored for 250bhp though so i dont think id need new suspension, new brakes are on the list for latter anyway.

 

[herb]

mate the k04 isnt a straight swap but the k03/k03s hybrid is

 

[HDi fun]

IM going to go for a k04 turbo anyway now after getting more help, they seem very dear to setup etc more labour. I understand ill need bigger injectors and better airflow, also another intercooler. The cars tailored for 250bhp though so i dont think id need new suspension, new brakes are on the list for latter anyway.

I think we discussed this previously. And in that dialogue I seem to recall stating that the engine was designed with 250bhp in mind. It is. Audi TTs have been running at 250 bhp from the factory for some years.

If the K04 was never an OEM fitment then you're going to incur some enormous invoices for fitting it.

What is it that you can't get with the standard supercharger?


You mention an additional intercooler. Where are you planning to fit the thing?

 

[pgarner]

the K04 wasnt OEM fitment on the A3 but was on the S3. although it is a pretty easy swap if your handy with a welder.
youll need - intake manifold off a S3, Curpra R or TT 225.
fuel rail, injectors and FPR
downpipe - this needs cut and welded to your existing one to acconidate the larger housing.
oil and coolant lines for the turbo - this supposdly can be a tricky part
MAF from the VR6 or same as above.
Remap to get the best from it - should be looking around 260 from it.

look on ebay for the K04 was fitted to
Seat Cupra R -225
S3 - 210 and 225 varient
S4 - 2.7 twin turbo - both were K04 iirc
TT - only in the 225 ad 240 varients - 150 used K03 180 used K03s

can get you the part numbers for K04 but your looking at close to £1200 + vat from VAG

another option is a couple of VAG tuners now will now in exchange for your turbo give you another K03s which is a halfway turbo but bored out and full k04 internals fitted. this is just a stright swap over.

 

[emery1990]

I think we discussed this previously. And in that dialogue I seem to recall stating that the engine was designed with 250bhp in mind. It is. Audi TTs have been running at 250 bhp from the factory for some years.

If the K04 was never an OEM fitment then you're going to incur some enormous invoices for fitting it.

What is it that you can't get with the standard supercharger?


You mention an additional intercooler. Where are you planning to fit the thing?

Yer we probally did, thats why i just stated it then, but got the infomation a bit wrong, i dunt have a clue, i was told youll need one as the s3 has got two, and what do you mean whats it i cant get with the standard supercharger, if you mean bhp wise, then the main thing for fitting a turbo is to increase isnt it, i want it to be faster, simple as that.

Didnt realise they was that expensive.

 

[emery1990]

the K04 wasnt OEM fitment on the A3 but was on the S3. although it is a pretty easy swap if your handy with a welder.
youll need - intake manifold off a S3, Curpra R or TT 225.
fuel rail, injectors and FPR
downpipe - this needs cut and welded to your existing one to acconidate the larger housing.
oil and coolant lines for the turbo - this supposdly can be a tricky part
MAF from the VR6 or same as above.
Remap to get the best from it - should be looking around 260 from it.

look on ebay for the K04 was fitted to
Seat Cupra R -225
S3 - 210 and 225 varient
S4 - 2.7 twin turbo - both were K04 iirc
TT - only in the 225 ad 240 varients - 150 used K03 180 used K03s

can get you the part numbers for K04 but your looking at close to £1200 + vat from VAG

another option is a couple of VAG tuners now will now in exchange for your turbo give you another K03s which is a halfway turbo but bored out and full k04 internals fitted. this is just a stright swap over.

ahh thatd probally be better, £1200 bit to much tbh if thats JUST for the turbo. So they give like an aftermarket turbo but also bore out the engine, that being making it more air effience(sp) or not?

 

[HDi fun]

Blimey - you've got seriously big money plans.

Why don't you get the thing remapped first and see how much more torque and power you really need?

The levels of tune you're after would be better met with a completely different car to be honest. S3 perhaps?

 

[herb]

The levels of tune you're after would be better met with a completely different car to be honest. S3 perhaps?

not really considering the s3 has the same engine

 

[HDi fun]

not really considering the s3 has the same engine

Perhaps not the best suggestion by me. I think you'll find though that the S3 engine is significantly different apart from the geometry and configuration.

This is often the case with engines from the same maker with wildly differing levels of tune.

 

[pgarner]

ahh thatd probally be better, £1200 bit to much tbh if thats JUST for the turbo. So they give like an aftermarket turbo but also bore out the engine, that being making it more air effience(sp) or not?

No they just bore out the housing of the turbo to fit the bigger blades from the K04 its more a hybrid turbo. if your wanting to increase the cc to 1.9 your looking at major money. but considering the engine will take 350bhp before your needing internal work its not really nessessary JBS for around £10k they will take the car up to 450bhp. website was down last time i was looking as it was getting rediesgned.

just checked its still under construction.


the difference between the higher output 1.8 and the lower outputs were what ive mentioned further up and the compression was slightly lower at 9.3:1 rather than the 9.5:1 that the lower power engines run and a forged crank. the head and block in the main are the same.
they also have a second side mount intercooler in the passengers wing, a single front mount will be better as currently if youve got a front mount the pipework has top be extended from one end back round the cooler to the throttlebody. when the 225 manifold is fitted the throttle body is on the other side so this extra run isnt needed
also S3 etc runs twin cats