st170 inlet, what does the spindle/butterfly do?
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st170 inlet, what does the spindle/butterfly do?
I have an st170 inlet manifold. but i was wondering what the spindle, sticking out of the end, does? as its got a large internal butterfly attached to it!???
at first i thought it was the throttle butterfly, but thats on the throttle body.
so, what is it? is it to do with the st's torque restrictor?
And.. . what do i do with it on a zetec engine?!
at first i thought it was the throttle butterfly, but thats on the throttle body.
so, what is it? is it to do with the st's torque restrictor?
And.. . what do i do with it on a zetec engine?!
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