Volvo K24 turbo in audi application.

[s2_wot]

Link to one off a police car in the UK

5324 970 7401 does that fit the bill?

[prj]

I believe that if you mate the Porsche hotside (housing-impeller) with the Volvo compressor you will have most probably a 400 hp turbo.

400hp? Forget it...

[Billman]

the main restriction for more than 380 hp on the rs2 turbo is the turbine. If the porsche item is 1 mm bigger than the RS2 as these measurements show why wouldn't it do more?

[prj]

Because that compressor won't do more.
And a RS2 compressor will not do 380hp without heating the air like crazy on a stock engine.

[Billman]

the volvo units have (IIRC) the same compressor impeller dimension but a more efficient design than the RS2. The RS2 turbo can do 380 without to heat the air like crazy and it is proven more than once in real life and in paper.

[prj]

the volvo units have (IIRC) the same compressor impeller dimension but a more efficient design than the RS2. The RS2 turbo can do 380 without to heat the air like crazy and it is proven more than once.

No, it's not "proven more than once".
Post some proof, IAT vs RPM vs Boost vs IDC for example.

And you know why? Because I have more than 300 of such graphs of the RS2 turbo.
I know perfectly when it starts heating air like crazy.

The Volvo turbo has a smaller compressor than the RS2, get your facts straight.

[K Simmonds]

Because that compressor won't do more.
And a RS2 compressor will not do 380hp without heating the air like crazy on a stock engine.

In your experiance at what sort of power level does the RS2 compressor start to cause excessive inlet temps? 350BHP? I know there are variables like ambient air temps and intercooler size ect.

[Billman]

No, it's not "proven more than once".
Post some proof, IAT vs RPM vs Boost vs IDC for example.

And you know why? Because I have more than 300 of such graphs of the RS2 turbo.
I know perfectly when it starts heating air like crazy.

The Volvo turbo has a smaller compressor than the RS2, get your facts straight.

sorry i dont longer have my logs from back then with the stock setup. post something of an rs2. Stock ADU engine/turbo/IC etc.

Appart from it i must apologize about the hp statement. The volvo unit has a smaller then RS2 impeller but better design. The rs2 has an 66/48 compressor impeller and the volvo as stated before with 62/46mm. That said the Porsche/volvo hybrid could at the best come close to the rs2 output.

[andy10v]

prj any chance you could get the number off the porsche hotside you have?

[andy10v]

I got another k26, this time with a 50mm exducer, beleived to be porsche, possibly a 944



Tag


Hotside


And the hotside on the volvo turbo





If the compressor is the limiting factor in this hybrid it doesn't seem to make sense to install a larger exhaust wheel for more flow, might as well get fast spool.

[javispa]

Andy, that is from a 944 turbo 220hp . The part number can be checked here (unfortunately not the hotside part number, only the turbo one):

http://www.turbodriven.com/en/products/default.aspx

As it has been said before, your pictures confirm that the compressor housing fits perfect to the Volvo turbo.
I will follow this thread with lots of interest.
Cheers.

[prj]

Numbers on hotside:
Inside is stamped "6".
Outside GGG3552
5326 101 6362E

[prj]

K24-7400 vs K26/K27 #6




I went with the K26/K27.

[andy10v]

Would it be "safe" to run a k24 7400 on an otherwise stock car with the n75 unplugged for a couple of months?

[prj]

Sure, as long as your spring has not been wound down and other silly things.