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TurboKraft TurboKraft is offline
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Join Date: Mar 2005
Location: Phoenix, AZ
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Full width -- okay, we'll look into it.

But consider that if your intercooler is really big (like TurboKraft's full-width billet intercoolers) and obstructs most of the wings' louvered opening, you might need to shroud it completely. We have a theory that it isn't always necessary to completely duct all air through the intercooler.

Why?

The factory didn't completely shroud the intercooler on the 1991-94 Turbos.


(photo credit: spennyb's build thread http://forums.pelicanparts.com/911-engine-rebuilding-forum/626572-964-efi-conversion-using-mbe.html)

Those 6 oval openings to the right of the intercooler feed fresh air right into the engine compartment, completely bypassing the intercooler. Why did they do it? Was there an issue with insufficient engine air cooling without the 6 oval openings in the wing?

Again, this is just a working theory, and we did quick tests on a few cars that were inconclusive. Therefore we fully intend to measure the efficacy of fully shrouding a FWIC on a EFI 930 this summer when it's really hot in Phoenix. Engine head temp, IC outlet temp, and manifold pressure are already measured and utilized by the EFI, and the system's additional channels will allow us to datalog ambient air temps, IC inlet temp & pressure, and engine oil temp.

Maybe we're right, maybe we're wrong -- but we'll have data to know one way or the other.
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Old 05-25-2014, 10:18 PM
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