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Herr-Kuhn Herr-Kuhn is offline
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Join Date: Aug 2006
Location: Cincinnati, Ohio
Posts: 1,019
What BIG 928 Turbo Lungs Look Like

I have a rather interesting project going together right now. Let's just call it another monster turbo 928! Some shots to whet the appetite:


928S Twin bank intercoolers, top side plumbing and plenum joining box.



Intercooler details shot...notice tank design and the way the air is directed thru the core.



Another detail shot of the intercooler.


Intercoolers are far too often undersized for their application. This pair is rated to 750-800 HP with low pressure drop (less than 10% of boost pressure). Key to performance is internal flow area. People often assume the biggest frontal area is the best, so you see what looks like a huge cooler, but then you realize it is only 3" thick and 8" tall and 30" long. Your internal flow area is then 24 square inches through a 30" long tube in that scenario. These cores measure 9+" wide X4.5" thick for a total flow area of 40+ square inches and there are two of them making up 80+ square inches of internal flow area....this is the path to the low pressure drop, "reliable as a brick" air to air intercooling system for the Porsche 928. These are mounted out of the path of condensor and radiator airflow as to not impede cooling system performance. These pieces have been very carefully designed to fit into the chassis and offer maximum performance. Not offshore crap, these are top notch cores and the finished coolers are built by skilled craftsmen to my designs. These can't be bought off the street since they are my design. Notice the attention to detail and mounting pads which are part of the units.

Intercoolers are available as per listed on my website.
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Kuhn Performance Technologies, LLC
Big Gun: 1988 928S4 Twin Turbo, 5-SPD/LSD 572 RWHP, 579 RW ft-lbs, 12 psig manifold pressure. Stock Internals, 93 octane.
Little Gun: 1981 928 Competition Package Twin Turbo, 375 RWHP, 415 RW ft-lbs, 10psig manifold pressure. Nikasil Block, JE2618 Pistons, 93 octane.

Last edited by Herr-Kuhn; 10-28-2008 at 05:02 PM..
Old 10-28-2008, 04:46 PM
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