JC Whitney has anj air operated "pump" (uses an ejector, a form of orifice) that is cheap $24 IIRC. This will do it.
Most recip or rotary compressors for refrigeration duty will not pull below 25in. Hg and a B&S lawn mower won't either.
It is difficult to get below 25" Hg without a purpose built vacuum device.
My name is Richard. I was a Contouraholic.
NOW: '02 Mazda B3000 Dual Sport, Black
BEFORE: '99 Contour SE Sport
Duratec ATX Spruce Green
PIAA 510's, Foglight MOD, K&N Drop-in
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