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Old 04-01-2015, 11:39 AM   #246 (permalink)
phunk
A True Z Fanatic
 
Join Date: Mar 2009
Location: Chicago
Posts: 3,668
Drives: 370
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Quote:
Originally Posted by bullitt5897 View Post
Billet would not be cheaper in materials but would be easier to reproduce consistently so there is a trade off... Higher material cost and machine time but lower labor.

Carbon fiber is lower material cost but higher labor...

The cost of the product will have to be determined as which is cheaper to produce and still be reliably reproduced and perform without failure. This is something Phunk will have to determine once he gets his prototypes built.
Reliability is the concern. Cracking or flanges busting off the plenum. If your lucky, the engine just screams to redline and bangs off the limiter rapid fire until you turn it off. Another scenario is a piece of it runs down into a cylinder and effectively destroys the engine.

Cosworth stopping making their CF plenums for their DE intake manifold....
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