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Smaller venturi diameter than the 87. I have a hda 120 on that is roughly equivalent to the 144
Will it work? .... yes. However, the desire is to obtain the HDA-87 carburetor because it has a larger venturi.
Venturi Diameters:
HDA - 87 = 16.66 mm
HDA-117 = 15.08
HDA-120 = 15.08
HDA-144 = 15.08
While this is only a 10.5% increase in diameter...it ends up being a 22.5% increase in surface area.
I have both an 87 and a 120. Noticeable difference... yes. Night & Day... no. (Stock Saw)
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