Help Please P350L & P350S Pump
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  1. #1
    ec
    Jul 2011
    MXT
    28

    Help Please P350L & P350S Pump

    Hi need some help I bought a 7" dredge with a 3x4 with a BAD 18hp single engine I have Two questions One how is the sucking power with a single 18hp should I move up to a 23HP ? Two What pump do I have the P350L or P350S I looked in the 3" and I can see a gap on both sides is that the P350L if so can I swap out impeller.
    Thank You
    Gringo

  2. #2
    us
    Mar 2003
    Redding,Calif.
    5,847
    6667 times
    All Types Of Treasure Hunting
    #1--dredge size is measured by the inside of the hose --you have a 6". Single 18hp briggs ic tech engine is a great engine. Have it rebuilt if possible as 23 is indeed much overkill,shaft size too big also?? You are talking low dome/ high dome pumps. To know which ,you must measure inside the pump housing and the impeller dimensions to ascertain. If engine is bad why are you thinking of messing with pump?? Have you ran the thing when the engine was running right and what makes ya think the engine is bad?? The engine/pump combo is good on a 6" with 30' of hose in 30' of water depth,and will flat out hurt ya. I have posted pix on best find thread in gold prospecting forum to looksee ifn' ya want. What brand dredge--box type-floatation??John

  3. #3

    Oct 2004
    34
    3 times

    Help Please P350L & P350S Pump

    Quote Originally Posted by Gringo72 View Post
    Hi need some help I bought a 7" dredge with a 3x4 with a BAD 18hp single engine I have Two questions One how is the sucking power with a single 18hp should I move up to a 23HP ? Two What pump do I have the P350L or P350S I looked in the 3" and I can see a gap on both sides is that the P350L if so can I swap out impeller.
    Thank You
    Gringo
    What dredge do you have? I run a 6" Keene w/ 18hp Briggs w/ a P350 600gal pump,twin jet and use a 1 1/2" fire hose and reduce it to 1/2"at the blaster. I run this setup just over idle because of the 3 stage box being only 20" wide, the motor & pump setup works great and the only downfall is the weight of the motor pump & 263. Its easy to tell which pump you have,just look in the intake of the pump and the 600 gal impeller will be twice as thick as the regular p350 pump. If you want an awesome blaster, build a Y out of 2" pipe and put it in one of the 2" pressure hoses (if your running a twin jet) and take a ballvalve and a few fittings and reduce down to the size of ur choice. I use 1/2" about 6" long. with this blaster you better hold on for ur life if you open the valve 100%, I never open more than half way,it also makes a good pry bar with an instant burst of water!!!!
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  4. #4
    ec
    Jul 2011
    MXT
    28
    Hi John
    I have a dahlke Dash 7” it has a cracked engine block have not got to try it out yet it came with a Keene pump. I was looking at the top impeller where the water exits the 3" and seen that it is worn at a fand seen that it worn at a angle and was thinking they may be straight when new. I seen keene used a 23hp I thought with the same pump?


    Thanks for the help

  5. #5
    ec
    Jul 2011
    MXT
    28
    Hi Chris


    I have a dahlke Dash 7” Thanks for the pics looks like the same. I was thinking to put in a blaster that now its a Must !!!

    Thank You

  6. #6
    us
    Mar 2003
    Redding,Calif.
    5,847
    6667 times
    All Types Of Treasure Hunting
    7" is indeed strange as never seen one in my life and NOT a popular size. Dredge hose purt' near impossible on wierd sizes. Anyhow yes it sure sounds like a beat up mess. I'd send keene the impeller and ask for a match. Only thing is though, if the impeller is that munched up the housing must be trashed also. See the georgia pic,compare for impeller quality. Bummer is a single pic beats a 1,000,000 words as sure wish ya could post,emal,pm a pic or pics of all internal parts. Block broken WOW never ever seen that either. Sounds like that dredge got no love in it's life. If pump does NOT have precast blaster nozzle hose bib on the output side you do NOT have the bigger pump but the smaller ones as the monster was only made with the outlet and with none proves made prior to introduction of the larger models....John

  7. #7

    Dec 2012
    Murfreesboro tn
    1,030
    253 times
    Prospecting
    Gringo r u selling your old pump?

  8. #8
    us
    Look at the Historical Gold Mining photo albums on my page

    Jan 2013
    Huntington, Or./ Stanton, AZ/ former Outlaw California Gold Dredger
    Tesoro Vaquero, Whites MXT, Vsat, GMT, 5900Di Pro, Minelab GPX 5000, GPXtreme, 2200SD, Excalibur 1000!
    1,973
    3747 times
    All Types Of Treasure Hunting
    The 18 will work fine with the Keene P350S, Plenty of power. Do you have clear hose or are you running the steel? That's a great dredge, Terry Stapp swears by his, says he'll never run an 8" again. Still I like the 8" but I admit that 7" is sweet.

  9. #9
    ec
    Jul 2011
    MXT
    28
    Hi Reed
    I have the clear 7"hose it took sometime to find one but i have it Now I have rebuilt everything and did some mods and now its on its way to Ecuador.
    Thanks for the reassurance on the 18Hp Do you know if Terry Stapp is on treasurenet it?
    Take Care
    Gringo

  10. #10
    us
    Look at the Historical Gold Mining photo albums on my page

    Jan 2013
    Huntington, Or./ Stanton, AZ/ former Outlaw California Gold Dredger
    Tesoro Vaquero, Whites MXT, Vsat, GMT, 5900Di Pro, Minelab GPX 5000, GPXtreme, 2200SD, Excalibur 1000!
    1,973
    3747 times
    All Types Of Treasure Hunting
    You can contact him through Keene I'm sure. He still makes a lot of products for them. He used to sell gold on ebay but I haven't looked at gold there in a long time. His always stuck out because it has a pink back ground.

  11. #11
    ec
    Jul 2011
    MXT
    28
    Thank You

 

 

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