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 Follow this saga in Project Journal Photos 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.
