manifold machining

[nacelp]

If this is finned, and centered in the plenum, it might be effectively
reducing the plenum area to half, as far as the benefits of reversion, waves
etc (for N/A cylinder filling conditions), since they are "hitting" it at
less the min. resistance angles.
  Also, you'll need the lower area when under boost for the air to slow down
enough to pass thru the finned area.  Then enough area again for the
cylinders to draw against.
  Just thinking out loud here
Grumpy



>  Aluminum transmission cooler
> brazed inside.
>
> -----Original Message-----
> From: nacelp
> To: gmecm at diy-efi.org
> Sent: 4/7/00 1:31 PM
> Subject: Re: manifold machining
>
> **WHAT?**.
> Fred:
> Is there a typo here?.
> You talking intake tract, or including runners, or what exactly for
> these
> numbers reflect?.
> Grumpy
>
> > My 451cid stroker mopar has a 1232 cid plenum,
> > and my 252cid Buick V6 has a 576 cid plenum.  Though, there is nothing
> wrong
> > with mounting the throttle body right where the carb goes with an
> adaptor
> > plate, for a street car.  Racing is a different story.
> >
>
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