Berkeley vs Dominator confusion...
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Berkeley vs Dominator confusion...

  1. #1
    Senior Member shimp's Avatar
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    Default Berkeley vs Dominator confusion...

    What's the real differences? Is the Dominator pump as much better than the standard Berkeley pump as is claimed by some ads?

    For instance here:

    http://www.arsmarine.com/store52/ago...id=00330&xm=on

    To add to my confusion, I am kind of a jet boat noob, and my boat has a Dominator 12S pump, but the plate on the back of the boat, some kind of huge mounting flange says Berkeley on it..... Surely someone can tell me what is up with that?

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    Senior Member H20MOFO's Avatar
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    I'm no expert, but I plan to add a dominator bowl to by berk suction housing, because it takes a larger impeller than a berk bowl. Maybe I'm way off here....that's usually when I learn the most though. As far as the berk labeled dealio, are you talking about the transom cover??
    Another Hot Boat refugee

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    Senior Member shimp's Avatar
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    Well, there is a metal plate on top of the part of the pump that is inside the boat that says Dominator model MB 12S but then on the back of the boat transom (the outside of the boat) the plate that goes around the pump says Berkeley.... I was told my pump had a Dominator bowl, so I guess it was originally a Berkeley pump... I wonder what parts are Dominator and what parts are Berekeley... geez it's confusing, if I was brave I would take it apart so I could see what is what, but I think I'll leave it alone and let someone else tell me....

    So I take it the ads are right? The Dominator pump is better than the standard Berkeley pump, can take more horsepower, has options for a 9.5" impeller, and some other stuff that I did not understand the signifigance of when reading the ad..... still too much of a noob on this stuff...

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    Senior Member Brendellajet's Avatar
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    If the tag on the pump says dominator, the suction housing is a dominator. Sounds like your transom adapter is from a berk though)

    The Dominator 12 S is one of the better, as they are stonger, but I dont think this applies to some Dominator 12S castings, as the castings went through an ownership change at some point, and during that change I believe quality suffered. I could be off base, I've tried determining how to identify which 12S castings were best and nobody seems to know.
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    21 Daytona Outlaw's Avatar
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    can you read the serial # on your pump tag?
    go to American turbine web site and it will tell you
    more about your pump based on serial #'s
    #55

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    Senior Member matt1840's Avatar
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    Quote Originally Posted by H20MOFO View Post
    I'm no expert, but I plan to add a dominator bowl to by berk suction housing, because it takes a larger impeller than a berk bowl. Maybe I'm way off here....that's usually when I learn the most though. As far as the berk labeled dealio, are you talking about the transom cover??

    What kind of inscreases are you to expect swapping from a berk to dominator bowl.. (larger impeller) ? Im no hogh horsepower boat but i guarantee ill be turning atleast 475 500 hp.

    any info would be great, ill get my hands on a dominator lol.. Anything to help push this ol' tahiti along would be great

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    Senior Member H20MOFO's Avatar
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    I'm not sure what to expect..part of the reason I threw that out there was to see if anyone had some input on the swap. Hint hint
    Another Hot Boat refugee

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    Senior Member shimp's Avatar
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    I will check the serial number tommorow. I think it's a dominator pump, The tag is on the part of the pump that is in the boat, it is riveted to the top of the thing that has the driveshaft going into it, the cleanout is right behind the plate. I guess this inner part of the pump is called the suction housing...the transom cover is a Berkeley, I pulled all the interior out of the boat today to do new carpet and I looked at it really well and I see now that the part that I was saying said "Berkeley" on it is just a transom cover plate, it will unbolt and can be taken off the boat. Sorry for such noobish questions and stuff, can't help myself, I like to know how everything works, LOL....

    So if I got this right it goes like this starting from the bottom of the boat:

    1. intake / grate
    2. suction housing
    3. bowl/impeller
    4. nozzle/droop/diverter or jetovator, not sure which one I have....

    Is that right order? The right names for the parts?

    Mine also has an alluminum plate on the bottom of the boat that looks to bolt to the intake and extends out back below the nozzle, there are some funny looking spacer things, and those bolt to or around (kinda like a clamp maybe?) the nozzle, I guess this is called a "ride plate" not sure why it's needed, what's wrong with just riding on the bottom of the boat like it was intended, why does it need a ride plate?

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    Senior Member Brendellajet's Avatar
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    Quote Originally Posted by matt1840 View Post
    What kind of inscreases are you to expect swapping from a berk to dominator bowl.. (larger impeller) ? Im no hogh horsepower boat but i guarantee ill be turning atleast 475 500 hp.

    any info would be great, ill get my hands on a dominator lol.. Anything to help push this ol' tahiti along would be great
    doubt you will notice anything at that power level.
    "He is a lover, not a fighter. But he's also a fighter, so dont get any ideas."

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    Senior Member H20MOFO's Avatar
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    Say 600-700 hp? Isn't bigger better??
    Another Hot Boat refugee

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    Senior Member Brendellajet's Avatar
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    at 600-700 hp you still haven't reached the limit of the berk impeller(probably turning an A to 5200?). If you dont already have it, I dont think its worth the effort. Lots of fast boats with lots of good professional insight running Berk bowls...I think that has to say something...not sure what. Would be nice if someone who KNEW would say for sure...
    "He is a lover, not a fighter. But he's also a fighter, so dont get any ideas."

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    Senior Member matt1840's Avatar
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    Quote Originally Posted by H20MOFO View Post
    Say 600-700 hp? Isn't bigger better??

    ill sit over here and twiddle my thumbs with my measly engine lol...

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    Senior Member shimp's Avatar
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    I think the serial number said 2431 AAB or something really close to that.... I will have to go look again.

    The part inside the boat (the suction housing I guess is what you call it) does say Dominator on the sides of it. So I guess it's really a dominator pump, but could possibly have the original Berkeley intake in the hull, but the rest of the pump, looking at pics on the American Turbine website looks definately all dominator, bowl, droop, everything looks the exact same. So i guess at some point this boat had a Berkeley pump in it and someone changed it for whatever reason, but left the transom cover.

    How do I get a Dominator transom cover so it will match or is it a totally different shape and I am stuck with the Berkeley cover because of the hole in hull...

    Also how do I tell if my intake/ride plate has a "shoe" on it? Just crawl under there and look for a wedge shaped peice of alluminum? As far as I can tell nothing is hanging down from the boat. Well, with the exception that the intake grate on the bottom of the boat appears to have some thin alluminum hanging down on each side of the grate, I guess to help keep the boat straight I don't know if I need to take pics I can.

    Thanks for any help. Sorry for being such a noob....

  16. #14
    Senior Member Brendellajet's Avatar
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    take pics.
    "He is a lover, not a fighter. But he's also a fighter, so dont get any ideas."

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