toss the throttle body completely?

jim green jeg1976 at yahoo.com
Tue Jan 30 09:47:25 EST 2001


I guess this might work if the car is in neutral and
is allowed to rev up really fast, but picture driving
in 5th and opening up the throttle, the engine can't
rev up very fast, and gets a huge dose of fuel all the
sudden.  The air sensor plate does one thing, it
senses air flow.  The amount of air flowing past the
plate depends on RPM's and the position of the
throttle body.

Jim
'89 90tq

>A fellow posted (Turbobricks) the results of a little
experiment he
performed on his Bosch CIS equipped ovloV turbo motor.
I thought
it was a clever thing to try though probably fraught
with difficulties,
such as passing emissions testing. What says the list?
What is
the basic conceptual flaw in redefining the air sensor
plate to be the
throttle?

DeWitt Harrison
Boulder, CO
88 5kcstq

 > I tried this today. I wired the throttle wide open.
Drilled a hole 
in the
 > top of the 90 degree  hose fitting at the fuel
distributor ( 
directly above
 > the center of the sensor plate). A  rod (phillips
screwdriver) was 
slid
 > through the hole until it just touched the sensor
plate. Started 
car. Sensor
 > plate became the only throttle.I had to hold the
screwdriver down at 
idle.
 > Allowing it  to rise increased engine speed. There
was quite a bit 
of force
 > pushing up on the screwdriver. It took some
practice but  I had it 
acting
 > like a throttle. The response seemed much better. I
can't  think of 
a reason
 > why  the drivers foot could not be directly tied to
sensor plate. If 
the
 > original setup could be compared to a constant
velocity carburator 
then this
 > ,perhaps, could be likened to a Holley with
accelerator pump. An 
actuator
 > (cable??) could be rigged tha allows the sensor
plate to rise (open) 
as
 > apposed to forcing it open. This would keep the
mixture correct or 
perhaps a
 > little on the rich side during acceleration.
 > What am I overlooking ? Will this work?



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