Announcement

Collapse
No announcement yet.

Das Beast: My E30 track / street build

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • dvallis
    replied
    Finally got a transient analysis of the eBay intake manifold working. Video is here. Enjoy.

    Cylinder 1 5 3 6 2 4 intake stroke shown below. It works, as in all runners suck air, but I'm not crazy about the flow. Going stock.






    Last edited by dvallis; 09-18-2019, 12:46 AM.

    Leave a comment:


  • dvallis
    replied
    Obligatory meme

    Leave a comment:


  • Digitalwave
    replied
    I love science.

    Leave a comment:


  • dvallis
    replied
    #Facepalm! Of frigging course. You need to open the runners in order of firing sequence. That makes total sense. Thanks Digger.

    Like you said, flow looks a bit uneven in some runners. I think we'll still stick with OEM as it's a known quantity.
    Last edited by dvallis; 09-15-2019, 08:14 AM.

    Leave a comment:


  • digger
    replied
    here are all runners drawing



    firing orders



    runners 3 and 6 drawing



    runners 1 and 4



    the difference in mass flow between them is very small. it would run ok atleast a from a distribution perspective

    obviously a transient analysis simulating the pulses is better way to do but this is a cheap and nasty way to get an idea
    Last edited by digger; 09-14-2019, 07:14 PM. Reason: spelling

    Leave a comment:

Working...
X