Originally Posted by SPOOLIN
there is a flaw in this whole thing you have posted.
the flaw is Garrett.
Precision is smart. Precision figured out that the billet design makes the blades a whole lot stronger. So, since they are stronger, they cut the wheel in a way that makes the hub a good bit smaller....what happens when you cut a hub smaller?....Magically...the blades gain more surface area. A 67mm compressor wheel becomes a 70ish mm compressor wheel. Precisions Billet 67 flows almost as much as my 72mm compressor wheel on my S372 from Borg Warner. The only possible way for that to happen is by using a Billet design allowing the surface area gains. If you cut a billet compressor wheel to the same specs as its cast counter part, OF COURSE IT WONT HAVE A PERFORMANCE GAIN. You know the ridges that you see cut into a precision wheel? Those are there on purpose....Precision figured out that they actually act as an air buffer allowing air to flow over itself, air flowing over air flows faster than air over an actual material. they CAN cut the wheels to be as smooth as silk if they want. The Precision 67mm is rated for 700ish HP. The Billet 67 is rated for 950hp....and it has repeatedly done just that. The billet design is OBVIOUSLY better.
I cannot figure out for the life of me why Borg warner, bullseye, and Garret will not fucking do as the Romans do and make their wheels comparable to precision.
I COULDNT HAVE SAID IT BETTER MYSELF MATT
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