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FUELMAKER COMPRESSOR HEAD

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  • FUELMAKER COMPRESSOR HEAD

    Does anybody know the parts difference between the fuelmaker compressor head FMQ-10 (3000 psi) parts # PR770304s and the compressor head FMQ-8-36 (3600psi) part # PR7700675

  • #2
    Not a Fuelmaker expert but there are many on this forum that are. I believe the 3000 psi compressors have a little larger displacement then the 3600's and that's why they have a slightly higher output. There is a caution about putting an FM4 compressor head on the FMQ-36 as it will overload the motor and burn it out. It must not have enough reserve H.P. to run above 3000 psi with the bigger compressor head.

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    • #3
      The first, most noticeable difference is the locating dowel pin. On a 3600, the dowel pin is pressed into the mounting surface of the compressor "head" itself. On a 3000, the dowel pin is pressed into the convection plate, or mounting surface of the controls module. If you work your way around the dowel pin and install a 3000 compressor on a 3600 psi unit, it'll pop the burst disc, which is located in the stage 4 head cap. Again, working your way around the locating dowel, you can run a 3600 compressor in a 3000 psi unit and it'll work fine. The motor windings are the same. The only other difference that I've seen is that the 3600 "head" has two compression rings on the stage 2 piston, whereas the 3000 "head" has just one compression ring.

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      • #4
        Is there any difference between the compressors on the fmq-7-42 (4200 psi) and the compressors the fmq-8-36 (3600 psi) ?

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