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Message
> I’m absolutely convinced that 5 psi will be much stronger
when I can
> get the wastegate opened up more
I missed something here.
Could you explain this a little? Why does the wastegate need to be
bigger?
The simple answer is,
when I open the throttle on takeoff, I only want 5 psi of pressure. As it
is now, if I open the throttle, with the wastegate fully open, I get 10
psi. The wastegate just isn't big enough.
The more complicated,
and controversial answer is that pressure isn't everything. In a static
condition, all that matters is the pressure. In a dynamic
condition, where there's a large amount of flow through the intake, any
restriction will cause a loss of power. In my current configuration, I
have to run about half throttle to stay below 5 psi. That means that
the butterflies are half closed, and are a pretty significant restriction to
airflow. We know that engines are at their most efficient mode when the
throttle is wide open, and this is no exception.
Step one, is getting the
throttle fully open. In order to do this, you need to be able to control
the boost pressure, and that goes back to the wastegate size. I'm
convinced that I'll have significantly more power at 5 psi, with
the throttle fully open, than I do now with the throttle half
closed.
If I were an optimist,
I'd say that all these problems are good, because I can look forward
to improvements every weekend. Pity I'm a pessimist
:-)
> I had recently re-oriented the oil vent line
Hmmm. Oil vent line? I
don't think I have one. Where does that connect?
There should be a vent line on the oil
filler tube, or on the center housing near the tube. You don't want
to plug these up.
Rusty
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