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Thread: Stomp Grate = power loss?

  1. #1

    Default Stomp Grate = power loss?

    I was wondering if stomp grates (extra grating) restrict the intake of water to the pump and possibly result in a loss of power? My work boat is a 20 ft Marion with a 4.3 liter v-6 and a center console. It's a great boat for hauling gear, but my memory tells me it used to have a little more power before the stomp grate was installed. I use the boat so little, except for the 1,200 miles logged last week (ugh!), that I just can't remember what the power used to be like. Thanks.

  2. #2
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    I noticed no loss of performance after installing a stomp grate on my inboard jet and have yet to anyone post otherwise. Also there should be no "extra" grating, at least on the one I have every other slat/bar in the grate is on one half of the assembly, meaning there are the same number as the original grate, same flow.

    It may as simple as a fuzzy memory as to the actual performance, or a wearing of the impeller/s and sleeve/s now becoming noticable.

  3. #3
    Member Grayling Slayer's Avatar
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    I just installed a stomp grate on my 21' Hewescraft and noticed no loss of performance. There is no way that a V-6 is going to be pumping enough water to make grate restriction an issue. With a V-6 in a 20' inboard you are already a little underpowered.
    "I'd rather be fishing!"

  4. #4
    Premium Member bmunsell's Avatar
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    Maybe the boat has gotten heavier over the interveening years with so little use, I know that's happened to my ..... boat.

  5. #5

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    Thanks - it appears my fuzzy memory and desire to haul huge loads have come into play!

  6. #6
    Member Blue Thunder's Avatar
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    I was concerned about the same thing before I installed my stomp grate. I have a TJ 22' 383 stroker and the Ham 212 pump. Before I installed the stomp grate I went out and checked WOT, speed and RPM. After I installed the grate I rechecked the performance and no change. The only change was the piece of mind to know if I plugged the grate I could now stomp and go. Good investment.
    Retirement Plan - Having Fun and Still Learning

  7. #7

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    Blue Thunder: So you haven't noticed any difference in performance when heavily loaded either?

  8. #8
    Member Blue Thunder's Avatar
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    No difference at all. I can only speak for the Katchem (forgot how it is spelled) made grate. These grates are made in Idaho. Some where I have contact info for the guy that makes this grate. Let me know if you need it and I will try and find it tomorrow.
    Retirement Plan - Having Fun and Still Learning

  9. #9

    Default

    Thanks - I don't need the contact info. I believe the stomp grate on our boat was also made in Idaho. I'm probably barking up the wrong tree with this stomp grate theory.

  10. #10

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    Go weigh your boat and see if you aren't holding some water in the foam, you could be surprised some foam gets water logged.

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