SoCal Jet Boats

Tech Talk => Jet Pumps => Topic started by: Kfauntz on May 08, 2014, 08:41:31 AM

Title: Difference between jets?
Post by: Kfauntz on May 08, 2014, 08:41:31 AM: Hey guy I was curious what it the real difference between jets? I know berkley has 12jg and jc etc. but what does that mean?

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Title: Re: Difference between jets?
Post by: lbhsbz on May 08, 2014, 10:14:49 AM: Berks are all same basic units excepting the JE, which is an insert style suction housing.

The differences are in the bowl for the others....JG is a split bowl, you can bolt on a droop between the nozzle and bowl. JC bowl has the pin bosses cast in, can't run a droop. The bowls are all interchangeable
Title: Re: Difference between jets?
Post by: Kfauntz on May 08, 2014, 03:36:27 PM: Good to know thank you!

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Title: Difference between jets?
Post by: lbhsbz on May 08, 2014, 07:18:45 PM: Double post
Title: Re: Difference between jets?
Post by: Blown R/T on May 09, 2014, 08:23:54 AM: What's a 12JB?

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Title: Re: Difference between jets?
Post by: beerjet on May 09, 2014, 09:09:02 AM: Quote from: Blown R/T on May 09, 2014, 08:23:54 AM
What's a 12JB?

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"Older version" of the JG

-beerjet-
Title: Re: Difference between jets?
Post by: Blown R/T on May 09, 2014, 09:20:53 AM: That's what I have in my Rogers... But it's a decent pump right? As long as nobody changed the internals the stamp says 12JB-AB SS so I'm guessing I have an AB stainless impeller?

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Title: Re: Difference between jets?
Post by: 74hondo on May 09, 2014, 11:20:33 AM: I don't know about the stainless impeller part.
Title: Re: Difference between jets?
Post by: Kfauntz on May 09, 2014, 11:33:28 AM: Does the jet have a performance difference?

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Title: Re: Difference between jets?
Post by: beerjet on May 09, 2014, 11:46:23 AM: Quote from: Blown R/T on May 09, 2014, 09:20:53 AM
That's what I have in my Rogers... But it's a decent pump right? As long as nobody changed the internals the stamp says 12JB-AB SS so I'm guessing I have an AB stainless impeller?

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You'd be right.
Assuming it wasn't gone through and changed.

-beerjet-
Title: Re: Difference between jets?
Post by: Blown R/T on May 09, 2014, 12:27:54 PM: Quote from: beerjet on May 09, 2014, 11:46:23 AM
You'd be right.
Assuming it wasn't gone through and changed.

-beerjet-
I sure hope not! I've heard of an A or a B impeller but what's the advantage of an AB?

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Title: Re: Difference between jets?
Post by: Flusher on May 14, 2014, 02:17:36 AM: Quote from: Blown R/T on May 09, 2014, 12:27:54 PM
I sure hope not! I've heard of an A or a B impeller but what's the advantage of an AB?

All sizes of impellers start out as the same basic casting and are cut down to achieve a different target RPM. The outside diameter is reduced and the length and overlap of the blades are shortened. An AB impeller is a size between an A and a B impeller. There are also + and - sizes i.e. A- and B+. The attached cut chart is an older drawing and I don’t believe that the dimensions are still relevant, but you get the idea.