Originally Posted by
James @ M Developments.
Statements like "it needs to do 600bhp for 20secs before i'll think its any good" are a bit off the mark. If your turbocharger is large enough to make 600bhp at 1 bar that would be pretty easy.
that last statement could also be off the mark.
a small turbo not flowing much but at very high temperatures is far easier to cool as there is a bigger delta between the medium being cooled and the medium doing the cooling than a big turbo flowing a lot at not very high temperatures.