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I supported Toymods
Location:
Brisbane, QLD
Registered:
May 2002
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Re: Intercoolers and lag
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Sun, 15 December 2002 08:37
 
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Well,
Couple of things really. Please feel free to correct me.
Firstly, what would be most important to me is the flow rate. See when people say the intercooler has 0.2psi drop, that doesn't mean shit. They can be trying to flow 25cfm@20psi and experience a 0.2psi drop or 15000cfm@15psi and experience a 0.2psi drop. What I would want in an intercooler is that it should support the flow I am interested in, at a lower restriction (and hence, psi drop) as possible.
This leads to the second issue. A larger intercooler would introduce a lag and the lag would be dependent on the turbo pressure, flow and the intercooler and piping volume, for the most part. How bad is this in real life? Any experience?
The other thing is the thermal efficiency. If its a tube an fin design, then more smaller tubes in the core is better than bigger tubes, even though the bigger tube core would flow better (due to the decreased wall area) but the thermal efficiency would suffer.
As far as I am concerned, I don't care about a 2 - 3 psi pressure drop across the intercooler at the flow rate I am interested in given it has a good thermal efficiency. Getting extra 2 - 3 psi off a turbo setup is much better imho than to have a shitty intercooler that doesn't work too well.
Do you guys know any place that would make a custom intercooler, if I was to give them the specifications I wanted?
Cheers
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