Outer Limits 4x4 Board

Hi I got a mate who is wanting to make a water intercooler for his Garrett GT28 turbo. He also wants to have the water refrigerated has anyone attempted this before? Anyone know where he should look first?

Cheers

The horsepower used to refrigerate the water would negate any benefit felt by the cold water. You can't get something for nothing i'm afraid. Water/air intercooler a good thing though

Muz

Forget refrigerating it and just fit a really big radiator for it and a big fan. In drag racing they will use ice but the logistics of this for anything but drag racing makes it pretty inpractical.

If you are really keen on refrigerating then do some calculations based on the BTU's you need to take out of the intake and then work out how many hp that will give and then what size compressor is needed to pump the required amount of refrigerant. I'm pretty certain you won't go very far into working it out.

If you drive around with the A/C on anyway, one of the A/C lines gets very cold, you could pass that thru your water reservoir a few times, maybe make a coil inside your reservoir.

a few rough figures for you:
a good HP td42 would create about 20-25kw of heat in the intake air, an aircon unit is good for about 2-4kw of cooling, and can draw 3-8hp from the engine.
so not really worth it!!

a mate of mine runs a water/air intercooler. he runs 10/11psi out of his 2.8ltre gq. this thing moves on 35 claws!!