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Re: weed wacker engine running on air!!!!
That probably will not work the way you want it to, engines do work by compressing an air/fuel mixture, but they rely on that air being heated by combustion at precisely the right time to push the piston back down, you might be able to figure out some way to inject the air just after TDC and that might work, but I don't think you are going to get the power output that you are expecting. Plus, your shop air is probably about 90 PSI, combustion pressures are much much higher, I'm not sure of the exact number, but figure a compression test on a typical engine is usually 150-200 PSI (and that is just the dead compression, not the pressure generated by the combustion).
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1992 SVX LS-L #1222 Pearl White
1987 GL Turbo wagon, 5 lug conversion, D/R 5 speed (Rice killer)
1992 Dodge Ram 4x4 diesel (car hauler)
1968 Dodge Polara convertible (Camaro killer)
1990 Toyota Corolla FWD auto (330,000 mile grocery getter)
1986 VW Jetta
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