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Message
I had intended to see
if the wastegate could be eliminated
entirely, and
control boost strictly with throttle adjustments, ie
if the
engine is running at low power ,Idle, the
throttle is almost closed thus
eliminating the amount
of fuel mixture burned thereby controlling exhaust
gas
pressure and controlling turbo speed. On takeoff, you
would not use
full throttle and the restriction at the
throttle body would reduce boost in
the same way. I
think you would quickly learn about how much throttle
to
use and make needed adjustments after becoming
airborn.
--- This will certainly
work, but you will still want a pop-off valve for those times that you misjudge
the throttle movement. There are also times when a sudden go around may be
required. This wouldn't be the best time to have to manually judge how far
to push the lever. I'm not sure how much simpler it can get than a manual
wastegate cable and a pop-off valve.
However, I have purchased a standard exhaust
manifold and it looks
like the wastegate would have to
be cut out and the hole welded shut so I
quess since
it's already there I'm going to put a manual control
on it.
--- What year is that manifold
from? You're not running 3rd gen twins are you? The reason I ask, is
that I don't think any 2nd gen manifolds had a wastegate built-in. Mine is
the 89-91 version, and the wastegate is in the turbo itself. The exhaust
manifold has no valves at all. I believe the 87-88 version had some sort
of diverter valve, that was supposed to help spool quicker, but I've never seen
one, do I'm not sure where it was located. Just curious.
Rusty
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