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America GS Consolidated Thread

 
Old 07-19-2015, 09:15 AM
  #226  
Robert Linton
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It will be a Bosch ECU.

If we go to a four valve head, it will be air cooled. We are also looking at other potential valve train technology. Notwithstanding, however, the engine will remain air cooled.

I hope I will not again be distracted because this should have been completed a long time agao.
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Old 07-20-2015, 02:04 PM
  #227  
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Glad to hear you're progressing Robert ... the 4.0 is the right number!
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Old 07-20-2015, 04:54 PM
  #228  
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I think so.
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Old 07-21-2015, 10:22 PM
  #229  
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Glad to see you are back!
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Old 07-22-2015, 06:52 AM
  #230  
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Thank you, very glad to be back -- and to get this up and going again.
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Old 11-22-2015, 07:17 PM
  #231  
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Several weeks ago, we dynoed our air cooled, six cylinder test engine -- 4 liter, 2 valve, normally aspirated. Result was 430 HP with street gas and a catalytic converter. There are several modifications that various engineers have suggested which should result in approximately 440 HP. Given parts that have to be added, made and those that require modification, the next dyno run will be January. After that, on to the 4 valve version which, if successful, will be available to anyone.
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Old 11-23-2015, 12:27 PM
  #232  
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Originally Posted by Robert Linton View Post
After that, on to the 4 valve version which, if successful, will be available to anyone.
Can't wait for this!
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Old 11-24-2015, 01:23 AM
  #233  
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Old 11-24-2015, 06:44 AM
  #234  
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No this not. Nor, by the way, is it our original airbox, which was but a first step, but which is not appropriate for this range of HP.

Notwithstanding, Jeff Gamroth does excellent work.

Last edited by Robert Linton; 11-24-2015 at 07:02 AM.
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Old 11-24-2015, 06:47 AM
  #235  
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Some pictures of our original induction.
Attached Images     
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Old 11-25-2015, 04:09 AM
  #236  
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Old 11-25-2015, 10:15 AM
  #237  
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Engineering works of art... very happy to see this thread being updated. Thank you Robert!
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Old 11-25-2015, 03:35 PM
  #238  
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Are those solenoids on the underside of the intake, operating a varioRam-esque air passage array?
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Old 11-25-2015, 03:50 PM
  #239  
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i think so!
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Old 12-28-2015, 11:27 AM
  #240  
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Robert, Porsche had already explored the 4 valve head technology in the 70's, and their ultimate solution for power and reliability was to at least water cool the heads. Do you plan to do this? I realize there are much more exotic coatings and surface treatments available to valves/valve guides than there were in the 70's, but you cannot argue with thermodynamics regarding power potential, especially if using gasoline.
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