Turbo header design

[Shannen Durphey]

diy_efi at efi332.eng.ohio-state.edu wrote:
> 
>   The tri-Y approach sounds more like the article that I read.  In the article, there were collectors for each bank.  Damn!  I can't find the article!  It is here, under a pile of other treasures, somewhere.  Anyway, they talked about matching the cylinders on each bank to scavenge, put in short baffles that led into a cone shaped collector that narrowed into the exhaust pipe.
>   Now, I hate to share my ignorance with you all, but I have ran into a problem understanding what is probably the most basic operation of a V8 engine.  Here is what I did to determine what cylinders should be matched:
> 
>                 Firing order
>           1  8  4  3  6  5  7  2
> Stroke
>   1.      P  C  I  E  P  C  I  E       (P=power,C=comp,I=intake,E=exht)
>   2.      E  P  C  I  E  P  C  I
>   3.      I  E  P  C  I  E  P  C
>   4.      C  I  E  P  C  I  E  P
> 
>   Why is cylinder #6 at a power stroke while cylinder #1 is also at a power stroke?  I am trying to find out where each of the cylinders are, in their four stroke cycle, when cylinder #1 is at its Power stroke.  What am I doing wrong??  Where is cylinder #6, in its stroke cycle, when cylinder #1 is on the power stroke?
> 
Here.  There's been a couple of answers, this one looks easier to me.
; )

                  Firing order 
                1  8  4  3  6  5  7  2
Cam degrees  
   0/360        C     I     E     P
                   C     I     E     P
      90        P     C     I     E
                   P     C     I     I
     180        E     P     C     I
                   E     P     C     C
     270        I     E     P     C
                   I     E     P      E

Remember, for every 45 degrees of Cam revolution, there is a power
stroke.
Shannen