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E58H vs E57H

Discussion in 'Meyer / Diamond Products Discussion' started by mrfiestas, Mar 3, 2013.

  1. mrfiestas

    mrfiestas Member
    Messages: 61

    Does anyone know what the difference between these two pumps are and why the need for both as they look the same? Is one better than the other and how do they stack up vs the E60H?
    Last edited: Mar 3, 2013
  2. Fourtrax250R

    Fourtrax250R Senior Member
    Messages: 109

    The E-57H uses essentially the same valve block as the E-47, and E-60 (although the valve block was updated for the 57 to the one port coming out of the top of the block with the big elbow, and the other port coming out of the side of the block) you can still use a valve block from a 1980's E-47 on the 57or 60 and it will work fine. The A-valve port is built into the sump Base of the 47, 57, and 60, so the valve block only has provissions for the B and C valve/coils.

    the 58H Is essentially the same center section, motor, and pump as the 57 except for: the A-port in the base is no longer there, because the new valve block has the provision for it. the 58H valve block holds the A, B, and C valves/coils. The threads in the ports in the 58H valve block are SAE, not NPT like the older blocks. The 58H does not use couplers, unless you use adapters to setup that way. You cannot retro-fit a 58H base to use a 47/57/60 valve block because the 58H base does not have the A-valve provision. You can however go the other way, and bolt a 58H valve block onto a 47/57 base or a 60 base, providing you use the "plug" for the a-valve port. The new valve blocks use duetch connectors on coils, and are o-ring sealed. Also, the drop speed adj. is now externally adjustable on the new Valve block. The E-58H also came with a "raised" area where the vent plug threads into to make it easier to open/close and fill the pump.

    58H vs 60H, the 60H will still be faster just because it flows so much GPM. But the new valve blocks on the 58H are bullet proof. You can do bost of both worls, and set-up the E-60 to use a 58H valve block, to have a E-61H. We have 2 of these, and they are fantastic!! Really fast!!! ussmileyflag