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Engine Compressors

Discussion in 'Early Jeep Restoration and Research' started by RATTYFLATTY, Oct 28, 2008.

  1. RATTYFLATTY

    RATTYFLATTY I think you need a little more throttle

    I have found another item to bring home, although it's not a jeep it is the heart of one. I have found a converted L-head motor that served as a compressor also. The 2 center cylinders are used as the compressor pistons and the end 2 are still used as the engine. I will post picks up later as I have just brought it home.
     
  2. Brieoff

    Brieoff Member

    Cool!
    8)
     
  3. SIDSCJ

    SIDSCJ Jeep addict

    Saw one of those last year. Pretty ingenious, although I couldn't read the tag w/the specs on it. This one was on a skid with a 40ish gallon air tank. Wonder what the CFM would be??
     
  4. Hawkes

    Hawkes Member

    Cool, must be one way valves on the middle cylinders to keep from sucking the air back in. I heard about a device on my local board that you could remove a spark plug from your engine and use one cylinder of your engine to pump air. Have to filter it I would think, it would have gas in it.
     
  5. cj6/442

    cj6/442 Sponsor

    I have that contraption.... from my grandpa's stuff. . looks like it would work
     
  6. mdbeck1

    mdbeck1 55 Willys CJ5

    I did some work for a fella when I was a kid that used a rig from the number one plug hole to air up his tire. No filter just a hose that connected to a fitting threaded like a plug. The other end had a standard air chuck for the tire. He took out number one (in line 6), hooked it up, and aired up his tire. When he was done he killed the engine and put the plug back in.
     
  7. gasman

    gasman Member

    that,s a good idea I have a compression tester that treads in with an air chuck fitting .F-head plugs are easy to get to.I,ll give a try next time wheeling.
     
  8. mdbeck1

    mdbeck1 55 Willys CJ5

    Of course if you think about it you could be pulling in an air-fuel mixture into the tire. Probably not a significant problem but you might keep the tire away from large flames for extended periods of time.
     
  9. Hawkes

    Hawkes Member

    I think you'll need a check valve, the air going out will get sucked right back in.
     
  10. gasman

    gasman Member

    I think if your running 120 psi compression and disconnect hose before you shut of motor back check is not needed for 25 psi in tires.easy rider
     
  11. jpflat2a

    jpflat2a what's that noise?

    spark plug tire pumps wer invented to inflate tires
    I still use one today
    the check valve allows only fresh air to be pumped; no gas fumes or mixture
    I'd like to see some pics of this L-head compressor
     
  12. kaiser_willys

    kaiser_willys Well-Known Member

    x2 :toetap: a guy i worked for had a compressor that worked on the same principal and it was made that way from the factory, as far as cfm goes his was well over 100cfm plenty enough air to sandblast with or run a jack hammer pictures pleazzze:D this may be my next project if its easily done:beer: have herd this done with the 225 also
     
    Last edited: Oct 31, 2008
  13. kaiser_willys

    kaiser_willys Well-Known Member

    did a google on this, didnt find anything on a jeep engine but did find a conversion for a vw engine, looks like they used a special camshaft to convert 2 of the cylinders too work as a two stroke and the other 2 remained 4 stroke, they claimed 50cfm out of the vw engine, still not to shabby:D
     
  14. farfle

    farfle old dog

    The little spark plug compressor is still available in a lot of motorcycle accessory catalogs. The motorcycle one would be a little slowwww for a 33" tire though, I'll bet.
     
  15. wingtime

    wingtime Member

    I had a tow behind compressor that had a Ford 302 in it. One side (four cylinders) ran while the other side had a special head on it with reed valves that pumped the air. It produced 150 CFM so I doubt half a 134 could produce more than about 70 cfm. My father owned a rental company that he opened in 1960. They had welders, generators and more that used the Willys L head engine in them.
     
  16. nickmil

    nickmil In mothballs.

    The tool that works off the spark plug hole is commonly referred to as a "chuffer". Not sure if it's the right name or not but what I've always heard it called. I have one also and works pretty well.

    I'd love to see pics of the Willys compressor too!
     
  17. Eaallred

    Eaallred Member

    The one way check valve does nothing for separating the fuel from the air.

    I've got one, works great too. But it is the air from the cylinder that is filling the tire. And with a carburated motor, the only air getting into the cylinder is an air/fuel mixture. As a result, that is what your tire gets.

    Not a lot of "tires blowing up" stories. I've never had a problem, and never heard of one either. I guess you could have a problem if you drove your car though fire and punctured a tire at the same time. But man, that's a slim chance. I've always turned around when my option was driving through a wall of fire with sharp metal debris on the road. When I was younger, maybe, but these days, naaaaah. ;)