SoCal Jet Boats
Tech Talk => Jet Pumps => Topic started by: no more prop on August 14, 2012, 04:34:56 PM
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im new to jet boats and i bought a 77 sanger super jet and it has a berkeley 12jb-a .... all the info i see on here talks about 12 jc pumps.. is mine bad?
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I have a 12jb and I'm good with it. Some modifications and I run 85mph. Ok a crap load of modifications :screwy:
Split bowls always give you more options. I think what you have is better than the jc if it's what I'm thinking of. I've only owned jg and jb pumps.
Show us pics for more info
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The b is in reference to the split bowl. The c isnt a split but vanes go out farther for better flow. I have a modified c thats split now.
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thanks for the answers and the help... i appreciate it guys
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I think my pump has a C bowl..... I cant add a droop snoot to mine...there is no where to bolt anything up to it... please help
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snap a few pics :thumbup:
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if you have a c bowl , then you cant add a droop to it unless you have it modified or do it yourself. been told not worth it.
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i as well have a berk jc.
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hey mobboss, do other bowls interchange with berk pumps... that way all i need to do is find a split bowl?
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not sure on that one. i have not spent enough time reading on jets yet to fully get the whole thing down. bought a teaching shop manual, but have not had time to read thur it. i do beleave that you can put a diff bowl on your jet from an american turbine , but dont quote on it. why do you want a droop ? and do you have a place diverter?
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not yet, going to try to do the droop and diverter at the same time
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bowls arnt cheep not that a place diverter is either but you may just want to put a place direrter on and see if your happy. what are you trying to accomplish anyway if you mind me asking???
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bowls arnt cheep not that a place diverter is either but you may just want to put a place direrter on and see if your happy. what are you trying to accomplish anyway if you mind me asking???
this is good advise :thumbup:
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one of my friends that has jet boats told me to do it while it is apart... im new to jets so im just taking all the advise i can get.. i appreaciate all your guys help... i will try to get some pics of my project up soon
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yah well your buddy may have great intentions but is gonna cost you alot of money and probable wont be necessary . boats are not cheep.
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yah well your buddy may have great intentions but is gonna cost you alot of money and probable wont be necessary . boats are not cheep.
Just my 2 cents.... It probibly wont be worth it and it aint cheap either. I would just fo the place diverter and learn that for a while then get a differant jet boat with a split bowl pump already in it. Just like I looked for one with just a berk pump and 454 cheby, just what I pre fur (hehe) and held out til I found one I liked.
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i bought a 77 sanger super jet with berk 12-jb-a pump and a chev 454... its 18 ft and no interior... its a project...
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congrats! youll have fun! now lets see some pics!
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I think my pump has a C bowl..... I cant add a droop snoot to mine...there is no where to bolt anything up to it... please help
i bought a 77 sanger super jet with berk 12-jb-a pump and a chev 454... its 18 ft and no interior... its a project...
You need to post some pics of the pump and the tag if it still has one. That way we can at least tell you what you have and what you should do next.
Who told you it was a 12jb?
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here are a couple pics of when i picked it up... the tag on the pump says....model,12jb-a....bm#6216... serial#7554409
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the pump was apart
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i will take more soon
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IMHO unless you building a 500 +hp motor the droop will be unnecessary. I would try the Diverter and see what she does, that's a nice little boat.
Put it together then see what she needs. There is nothing at all wrong with the JB pump suction BTW, it was the predecessor of the JC and JG pump. They are actually a bit thicker in the construction in the area of the packing, otherwise identical.
If you are going to build 500+HP, lose the three point mounts, they are not strong enough IMHO to be safe. Go four point or buy a rail kit. Several times stronger.
GT
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thank you... i plan on changing to a four point system... i have it all striped down now getting ready to have it capped and re painted... the guy i got it from started replacing the floor so that is next then paint.. ive been reading super jets capping process, that sounds like a lot of work though..
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thank you... i plan on changing to a four point system... i have it all striped down now getting ready to have it capped and re painted... the guy i got it from started replacing the floor so that is next then paint.. ive been reading super jets capping process, that sounds like a lot of work though..
Understatement of the century.... :sly:
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IMHO unless you building a 500 +hp motor the droop will be unnecessary. I would try the Diverter and see what she does, that's a nice little boat.
Put it together then see what she needs. There is nothing at all wrong with the JB pump suction BTW, it was the predecessor of the JC and JG pump. They are actually a bit thicker in the construction in the area of the packing, otherwise identical.
If you are going to build 500+HP, lose the three point mounts, they are not strong enough IMHO to be safe. Go four point or buy a rail kit. Several times stronger.
GT
Looks Good!
Like was stated I would just do the divertor and go for it. It is very well set up as except the mounts.
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this is what i have learned the 12 jc is not a split bowl you can see the nozzle does not bolt onto the bowl. a split bowl has a bolted on nozzle. this seems to be a better deal but i can not figure out why..
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for what it is worth my c bowl and pump seem to be fine no complaints here . :thumbup: :beer:
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for what it is worth my c bowl and pump seem to be fine no complaints here . :thumbup: :beer:
Non here either :thumbup: