View Single Post
kenikh kenikh is offline
3 restos WIP = psycho
 
kenikh's Avatar
 
Join Date: Feb 2005
Location: North of Exit 17
Posts: 7,728
Cost drops in the CNC industry have really allowed billet compressor wheel technology to drive a revolution in the turbo market. The weight savings over cast are key to the improved boost response, but I also surmise that the vane profile design advantages imparted from 5 axis CNC machining are driving the biggest gains.

Now that it is cost feasible for tuners like AMS, Blouch, et al to design compressor wheels in relatively cheap and incredibly powerful tools like SolidWorks, simulate them on a computer, then cheaply cut test wheels, R&D costs are way down and time to market speed is way up. Additionally, 5 axis CNC allows vane design to incorporate negative draft vain designs impossible with die casting molds, which are brutally expensive to manufacture.

This is why we are seeing the market explode with packages that are smaller, faster and more efficient than anything we've seen prior. Your experience here is evidence of the same revolution across the market...tech that can allow a 2L motor make 400HP with a torque curve that looks like a small block V8 makes a 3.6L idle like a kitten and launch like a nitromethane funny car. We are moving into a golden era of turbo technology, driven by new tech allowing manufacturing processes, real time motor operating parameter manipulation and efficiencies never before possible.

With the abilities coming online to build efficient turbos, coupled with direct injection, variable valve timing and lift, the time is coming when there will be more turbo motors rolling of of assembly lines than NA. There was a time when Porsche wringed its hands at the theoretical operational displacement limit for a 6 cylinder motor and the implications on future 911 offerings and toying with the idea of a flat 8. The ability to make an efficient, powerful and completely transparent turbo motor of smaller displacement compete appears poised to ensure that we are driving flat-sixes for a long time to come.

It's a brave new world. Thanks to the turbo gods, indeed!
__________________

- 1965 911
- 1969 911S
- 1980 911SC Targa
- 1979 930
Old 06-11-2010, 06:49 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)