RS2 Intercooler

[waveydavey]

On the RS2 undertray question - I think that is a valuable upgrade whatever IC is fitted. Of course you could just modify an S2 undertray to get the same effect (if not as pretty).


Paul

Hi Paul

What's the difference between an RS2 and an S2 undertray?

Can you give a bit more detail on what needs to be done to the S2 'tray.

Cheers

David

[mcandmar]

Big air outlet at the back of the IC...

[Jamo]

RS2 core: 590 x 190 x 65mm

[Keeper of The Kitten]

Is it possible to make one which has an outlet on the same side and above the inlet so that the return trip within the engine bay is shorter to minimise heating?

Double pass intercooler's are not very effective, the air goes in then does a 180 and comes back along.
The KG series 10V (200 etc) had a double pass intercooler as stock and was quite weezy, a good upgrade was to change them for the later MC (100) single pass intercooler.
Don't go for a double, it's not worth it. You would be significantly better to move the inlet manifold to an AAN style if you want to reduce the inlet tract.

Not only is the double pass less effective, it also actually doubles the length so there is no reduction in the "return trip" that the air is making.

The most effective area of the airflow over the outside of the cooler is a large ellipse centred about the core "window". By going to a double pass arrangement you don't use a part of that effective "window" area that is presented to the external airstream, because you have now created two cores, as such.

You might be thinking "yes but it does two passes of the cooler, even though it does only half the core on each pass" - but this is a long tested principle and it is best to avoid any form of double pass system if you can.

__MDC__

[Tommy200rs]

Big air outlet at the back of the IC...

- very revealing picture

Could someone post some other interesting pictures of RS2 bottom into a new cat heat shields topic for example. It would be nice to see for example the exhaust gas pipe heat shields of RS2. I have noted that the ABY ex pipe shields are too small and some bottom coating melting is visible behind the cats. ABY shields maybe not wide enough.