Technical > Spud Miller's Cave

Throttle opening

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wideopen231:
Spud,

  Appr. what would butterfly gap be for 5000 rpm.Injected motor using bird catcher.Understand is not exact number.Must need to be in center of ballpark for peice I am making.iF know a range that would be great.

Spud Miller:

 Sorry...I have no idea. Too many variables! Load on the motor, leakdown percentage, main pill, secondary bypass, etc. make guessing close pretty impossible. Trial and error I'm afraid.

 Spud

ricardo1967:
Way too many variables... just ignition timing itself would throw that off significantly.

dreracecar:
Start high and back down, too little and it wont start

masracingtd1167:
Chris With that hemi I would think full throttle it might make 5000 . I just couldn,t resist !!!

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