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Old 11-22-2011, 09:22 AM   #30
Full-Race Geoff
Scooby Specialist
 
Member#: 133386
Join Date: Nov 2006
Chapter/Region: Tri-State
Location: AZ/NJ
Vehicle:
13 F150
ecoboost

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Quote:
Originally Posted by n2oiroc View Post
#2. you forgot the graph.
OOPS sorry about that, here it is again:

using the old S300SX 8375 (not FMW) this is the low boost run at 1.55 bar boost, red = flat tip, blue = cupped tip. obviously the red tip is the winner at this flow rate. I suspect philthy would see the same on his subaru if he tried to test. however, his evo at 40psi boost might be a little different..

Quote:
Originally Posted by jkopinga View Post
I DO know for a fact that the weight savings on for example:

- Billet 16G
- Billet 18G
- Billet 20G
- Billet 30R
- Billet 35R

Are almost 30% savings compared to that of their cast comp. wheel counterparts. I can post the weight comparisons if you are interested. Perhaps BW takes a different approach then aftermarket manufacturers like Precision or Blouch for their Billet wheels.
please post the weight comparisons, I have never seen anything like this re weight differences. Yes - BW definitely takes a different approach than the aftermarket guys - mainly becuase they *forge* the wheel first, and then machine it... its a forging not just a chunk of billet so it is MUCH stronger with better grain boundaries, but slightly heavier due to the higher density forged alu

fwiw i met the head of MHI's turbo division recently - he commented that the 16G was one of their highest performing compressor wheels, and was actually designed & shaped by hand originally - not done with CFD software. that blew my mind

Quote:
Originally Posted by Homemade WRX View Post
I'm looking forward to having a little chat at PRI
Raffi and I will be there thurs and fri - stop by! He will be there on sat also, but I will not
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