Re: [DML] Intercooler

[Martin Gutkowski - DMC Ltd <martin@xxxxxxxxxxxxxx>]

Chris Murley wrote:

>This isn't really true. A bad intercooler can have so great a pressure drop
>across it that it requires the compressor to work harder to maintain the
>same boost at the manifold, which means charge temps will be even higher. If
>the intercoolers thermal efficiency can't decrease the increased charge temp
>below what would be with no intercooler. It becomes a hinderance to the
>system.
>
>Granted, about the only way to accomplish this is by using an inercooler way
>too small for the application, or an extremely badly designed one, but it is
>still easily possible.
>
Yes, I do (and did) see your point but even just by making sure the 
x-sec area of the turbo outlet is kept constant or put through a venturi 
if the throttle is larger, and keeping those sizes in the intercooler 
with a decent density of channels, you'll be hard pushed to make things 
worse. In other words, apply a bit of common sense (something which Nick 
clearly has) and you should be okay. If using a donor intercooler from a 
productio engine - how big is that engine, how high is the boost and 
what does it rev to - that'll put you in the right ballpark.

I was intersted to see your suggested reading matter trashed by several 
of the reviewers on Amazon. Put me off buying it :-)

Best Wishes

Martin







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