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Thread: Intake grate?

  1. #1

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    Intake grate?

    I Purchased a 1998 Polaris slxh 1050 This winter, it has been my winter project. I cleaned it up, replaced all sorts of broken parts, replaced the CDI & Stator with the upgrade, changed the wiring according to the service upgrade, installed new Stainless steel 6 vane stator pump. Cleaned out the carbs, cleaned out the gas tank, replaced the fuel filter, new oil filter, just got it back together, Not yet had it in water winter still hasn't quite left. Mostly stock otherwise, but-

    I just wondered if adding a performance intake grate would change my top speed, I do not intend doing much more performance upgrades, but I wondered about the intake grate?

    Thanks in advance for any input


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    What kind of water will you be riding in?

    Smooth, mild chop, or rough?

    Which intake grate is on it now?

  3. #3
    casey67's Avatar
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    Yes it will lower your top speed. How much depends on how aggressive of a grate you choose. On my '01 SLX (same hull as yours) I lost 1- 1 1/2 MPH with an R&D "650" grate,which is one of the least aggressive.

    As K447 asked, water conditions will determine if the trade off is worth it.

  4. #4

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    I will be mosty riding in smooth water on inland lakes, where I like to cruise at top speed! The machine has the OEM Grate, I have just seen after market grates with a scoop that 'they' claim will force more water through, I do not know if that is true? If indeed a grate does not change speed except, maybe less, as casey67 states well then I have my answer. Because I am looking for low cost performance upgrades that 'increase speed!

  5. #5
    casey67's Avatar
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    Yes ,those grates will force more water into the pump,that will help hold the PWC on the water(for ruff water riding/racing).But increases the drag-lower speed.
    Kinda like when you hold your hand out of a car window going down the expressway,the more you pitch your hand, the more resistance.The stock grate offers less drag/resistance.

  6. #6

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    Thank you for explaining something slowly and clearly so that my brain could grasp what should have been ovbious to me, that makes perfect sense!

    Thanks.

  7. #7
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by ftr0432 View Post
    ... 1998 Polaris SLXH 1050

    ... replaced the CDI & Stator with the upgrade
    ... installed new Stainless steel 6 vane stator pump.
    ... Cleaned out the carbs, cleaned out the gas tank, replaced the fuel filter, new oil filter, just got it back together,

    ... Mostly stock otherwise, but-

    ... I do not intend doing much more performance upgrades...
    Quote Originally Posted by ftr0432 View Post
    I will be mostly riding in smooth water on inland lakes, where I like to cruise at top speed!

    The machine has the OEM Grate

    ... I am looking for low cost performance upgrades that 'increase speed!
    Well guys, what other options does he have for top speed gains without spending a lot of money?

    Happily, the SLXH 1050 is a fairly quick machine to begin with. Where can he go from here?

    Pump wedge change?
    Pump nozzle change, or AAT tail cone?

    Questions for ftr0432;
    What condition is the current impeller in?

    Is it the stock impeller for that model? Do you know the impeller part number?

    What is the clearance from impeller blades to the surrounding wear ring?

    What is the condition of the hull bottom and ride plate? Any scrapes or damage?

  8. #8
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Quote Originally Posted by K447 View Post
    Well guys, what other options does he have for top speed gains without spending a lot of money?

    Happily, the SLXH 1050 is a fairly quick machine to begin with. Where can he go from here?

    Pump wedge change?
    Pump nozzle change, or AAT tail cone?

    Questions for ftr0432;
    What condition is the current impeller in?

    Is it the stock impeller for that model? Do you know the impeller part number?

    What is the clearance from impeller blades to the surrounding wear ring?

    What is the condition of the hull bottom and ride plate? Any scrapes or damage?
    You pretty much have it covered, and are leading up to the answers we need to help.

    Other than those mods ^^^ you spoke of, he'd have to start doing engine performance mods.

    Reeds, porting, triple pipes

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