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  1. #1
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    Trim speed and jack plate speed

    Just swapped out a factory mercury external trim pump for a Mercury racing trim pump. I saw no difference in speed. Yes, the battery is perfect. The only comparison i have is that my 1988 XP200 will go up and down 3 full times by the time my new mercury high performance trim pump goes from full down to full up once.

    Next I just installed a brand new Bobs Extreme II jack plate and matching external pump, Not too impressed with the lift and drop speed. Once again, my old 1988 Land and Sea jack plate will go full up and full down by the time the Bobs goes from bottom to top.

    Am I expecting too much for a high performance piece to outperform 29 year old stuff?

    These are the two pumps I had high hopes for.
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    If I don't ask any questions, I'll never learn anything.

  2. #2
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    24 volts will fix your problem.
    We have invented the world WE see

    The further a society drifts from the truth, the more it will hate those that speak it.

  3. #3
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    That Mercury canister pump is t the fast one, the bobs should be fast though. My bobs pump is faster than my mercruser fast pump.

    Maybe be issues with wire sizing or something? Weird voltage drop somewhere?

  4. #4
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    Quote Originally Posted by CUDA View Post
    24 volts will fix your problem.
    Like cuda says. Double the power to it like the drag racers do and it will fly up and down
    Rob Lankford

    1988 20' Action Marine 2.4 200

    Previous owned boats worth mentioning

    1976 17' Action Marine 2.4 200
    1984 20' Action Marine 2.5 200
    1983 17' Hydrostream V-King 2.4 Bridgeport
    2003 LPB STV RR COPY 2.5 280 /300 Drag
    2005 LPB STV RR COPY 2.5 280
    2005 Baja 23 Outlaw 6.2 Mercruiser
    2006 FTP Quarter Shot T3 Race 2.5 200 CARB/2.5 225 PROMAX
    2009 FTP Quarter Shot T3 Race 2.5 280




  5. #5
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    There are a bunch of different pressure regulators for the Merc pumps, as they use them in I/O's, O/B's, and tabs. Sorry, I don't know specifics on them all, but was told this by a factory Merc tech when searching for a pump for my Stainless Marine jack. I'm guessing if you dig deep enough, you can probably find the highest output unit and put the pressure regulator in your unit from one, unless they don't sell that stuff separate.
    A problem is only a problem when viewed as a problem...

  6. #6
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    I remember the trim to the bravo outdrive on my baja was super slow. Mercruiser pump
    Rob Lankford

    1988 20' Action Marine 2.4 200

    Previous owned boats worth mentioning

    1976 17' Action Marine 2.4 200
    1984 20' Action Marine 2.5 200
    1983 17' Hydrostream V-King 2.4 Bridgeport
    2003 LPB STV RR COPY 2.5 280 /300 Drag
    2005 LPB STV RR COPY 2.5 280
    2005 Baja 23 Outlaw 6.2 Mercruiser
    2006 FTP Quarter Shot T3 Race 2.5 200 CARB/2.5 225 PROMAX
    2009 FTP Quarter Shot T3 Race 2.5 280




  7. #7
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    Quote Originally Posted by Hot Shot Merc View Post
    I remember the trim to the bravo outdrive on my baja was super slow. Mercruiser pump
    Couldn't that have been due to the trim cylinders?

    I had a Wellcraft Nova with twins and when the cylinders got really bad, I had to stand on the drives to get them back down after being on the trailer.

  8. #8
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    Saw this a while back, might give some info http://www.boatfix.com/merc/servmanl/6/6a5r3.pdf

    83 V-King, Mercury 3.0 back on the transom
    Stop wearing the face bags people. Don't be a sheep!
    Rebuild thread:
    http://www.screamandfly.com/showthre...-it&highlight=
    http://www.screamandfly.com/showthre...cs.&highlight=
    Videos

  9. #9
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    Quote Originally Posted by Road Trip View Post
    Couldn't that have been due to the trim cylinders?

    I had a Wellcraft Nova with twins and when the cylinders got really bad, I had to stand on the drives to get them back down after being on the trailer.
    Well they might slow it down some yes but I bought the boat brand new and it was slow trim from day one
    Rob Lankford

    1988 20' Action Marine 2.4 200

    Previous owned boats worth mentioning

    1976 17' Action Marine 2.4 200
    1984 20' Action Marine 2.5 200
    1983 17' Hydrostream V-King 2.4 Bridgeport
    2003 LPB STV RR COPY 2.5 280 /300 Drag
    2005 LPB STV RR COPY 2.5 280
    2005 Baja 23 Outlaw 6.2 Mercruiser
    2006 FTP Quarter Shot T3 Race 2.5 200 CARB/2.5 225 PROMAX
    2009 FTP Quarter Shot T3 Race 2.5 280




  10. #10
    Join Date
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    Remember you need volts not a lot of amps to make this work

    so a extra small battery is all you need

    In drag racing we use a switch on the foot throttle to activate the 24 volts , the switch goes to a adjustable delay ( computer, ha )

    with another set of trim switches on the steering wheel that are 12 volt to make final adjustments

    some have a 36 volt set up !

    Low volts tend to kill ( burn up) electric motors, example, bad connections, they love high volts .

    No matter what your working on always check your grounds , the most common problem in all electrical problems.
    We have invented the world WE see

    The further a society drifts from the truth, the more it will hate those that speak it.

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