Jerry Hey wrote:

For everyone's info,  after seeing the prototype throttle body, Rolf
has  suggested  moving the center of the 1.5" bore to 2.5"  above
the
housing center.  This is to improve the IO and IC timing.  The new
numbers are I.O.:-76º BTDC and I.C.: +76 ABDC.  He has also
suggested
increasing the butterfly size to 1.625 inches.  The shape of the
port
can be modified with a die grinder to improve flow.  The shape we
are
looking for is shown in a beautiful drawing which is attached.  The
important concerns are to leave the height of the port (top and
bottom)
unchanged  and to taper the indicated changes back toward the
butterfly
about an inch.  According to Rolf's calculations this throttle body
should be adequate for the RPM of either the 2.17 or 2.8 drives.  I
will make the changes in the prototype next week and report back.
Jerry

Jerry can you send a gif of that pdf drawing?

Paul Lamar

Sorry about that Paul.  I know better than to send a PDF.  Here is  a
Jpeg.

What are you using for file conversion software Jerry? I had problems
with that
too. I had to use Linux xv screen capture it to convert it to a
standard jpg.
Not to mention the 875K file size :) That's worse than Microsoft... if
that is
even possible :)

Paul Lamar

It is operator error Paul.  The image Rolf sent was a PDF.  I opened it
  in PhotoShop and saved as a Jpeg  From there I should have checked
image size and so on but I did not.

PhotoShop generated a strange, non industry standard jpg. Something to do with
the colors. I can handle the file size as Linux xv can cut them down to about 100K.
Fortunately Net Scape could display the strange jpg so I captured it.

Paul Lamar
 
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