Header is finished!

[Jim Green]

--- George Harris <harchris at smokesignal.net> wrote:
> Hi Mike:
>
> Interesting project. Being new to Turbo, I'm
> interested in the 'science'
> involved in exhaust manifolds. Is there any
> necessity to design the
> length of the pipe to increase the efficiency of
> scavenging the
> cylinders? Should the length of pipe between head
> and the collector be
> some multiple of a magic number depending on the
> displacement and RPM at
> the desired peak power?
>
> Inquiring minds need to know :-)
>
> Cheers
> George
>
> Michael Gough wrote:
> > Finally....
> > Damn what a great project!
> > Header is done, now just have to tie up the loose
> ends and fire up the
> > badass rebuilt MC motor.
> > Pictures at
> >
>
http://www.newtsplace.com/~mdg3369/images/?mode=album&album=mikes_header&dis
> > psize=640


Nice job Mike.  George as far as length of pipe and
collectors go, you really are at the mercy of the
10v's crappy non-cross flow design more than anything.
 The ideal header would be equal length with the tubes
converging so the pulses come out next to each other
and form a vortex in the collector.

For most of us there simply isn't room for this, plus
it would be very difficult to make a DIY header with
an idea runner design.  Fortunatly turbos literally
put a cork in the ideal design theory, and anything
that flows well will get you instant gains over the
stock EM.  If you're a racer and need that slight edge
in regards to spool up time, then you need to pay more
attention runner length and size.  You can check out
my header at the site below.

Later,


=====
Jim Green
'89 90tq 034EFI, Haltech IG5
http://www.geocities.com/jeg1976/car_home.html

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