Intercoolers..

[Craig Pugsley]

Hi there,

A few questions about intercoolers on turbo engines.

i/  What is better at removing heat from the intake air:
    Air-Air or Air-Water?
ii/ Where do Air-Water intercoolers get the water supply from?
    The engine cooling system or a totally seperate system
    (I was thinking of putting a container in the boot/trunk
    and filling it with ice water to feed the intercooler).
iii/If you were to run fuel injection with LPG, would the
    cooling effect from the LPG expanding as it comes out of
    the injector be sufficient to not require an intercooler?

The application is to turbocharge a 13B rotary in a Mazda
1300 (~=R100). The main problem is space constraints (ie an
air-air intercooler would be difficult to fit).

Sorry it's not quite 'EFI' traffic, but it's kind of related

Thanks,
Craig.
pugsley at trl.oz.au