It's not just the pressure capability that dictates what HP is needed, but the displacement of the compressor. So your spare with a 3 hp motor doesn't mean anything. I'll bet it's quite a bit smaller physically than the one you're planning on using.


Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.