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911st 911st is offline
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Join Date: Jan 2004
Location: Sacramento
Posts: 7,269
CIS or EFI?

Air Conditioning or not?

Have you done a search using "intercooler"? lots of very good info to be had.


The core, end tanks, and air ducting through the IC all are important to good intercooler performance.

A thinner wider core it better. A thick core needs a longer run to work as well.

The more air through the core the better the IC is going to work.

Note that 993TT not only has ducting for the intercooler but also ducts the motors intake up to the grill surface to ensure it gets fresh air. If we allow the intercooler to preheat the intake air it would go against all our goals.

Poor end tank design can add to pressure drop and turbo lag.

Of course extra volume has to be pressurized and that takes time.

Maybe more importantly might be to consider how air flows through the IC. Quick changes in direction & volume creates turbulence and contributes to back pressure. Abrupt corners that usually come with most fabricated tanks can also create turbulence and add to the pressure drop expected from the core. A well designed cast or CNC'd end tank like Porsche or MODE uses is usually going to make for a more orderly air flow and be best.

Notables from other threads:

Quote:
Originally Posted by 964 T #304 View Post
You could also use a C2 turbo type system that has a shroud on intercooler and also vents dedicated for air to air box and engine.







Last edited by 911st; 02-09-2010 at 09:57 AM..
Old 02-09-2010, 09:27 AM
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