Cam break-in on the trailer
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Cam break-in on the trailer

  1. #1
    Senior Member jet460's Avatar
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    Default Cam break-in on the trailer

    Just put new heads and cam in my 460.
    I need to break it in on the trailer.

    Any way I can do this with the
    pump hooked up?(Expecting a "hell no!")

    The drive line is a major PITA to install or remove with the motor already in, or at least it looks that way.

    The motor is out, and going in this weekend.

    1st time doing it this way.

    Help me out here, please....
    Last edited by jet460; 12-01-2010 at 09:57 PM.
    100 years from now, none of this will matter.

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    Certified Wildman! Sanger Flatbottom's Avatar
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    I don't know what kind of pump you have, but my Berkeley has a hose coupling on the inlet with a cap you remove to hook up a hose (need to make a short hose with 2 female ends for an adapter). It feeds the motor and I have ran mine several times with no problems. I have done this quite a few times for initial fire ups, however I wouldn't let it run for hours... The other option is to leave the d-shaft coupler disconnected if you are worried about the pump.
    Everything electrical has smoke in it.... and it's not done till you let the smoke out!

  4. #3
    Senior Member jet460's Avatar
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    Quote Originally Posted by Sanger Flatbottom View Post
    I don't know what kind of pump you have, but my Berkeley has a hose coupling on the inlet with a cap you remove to hook up a hose (need to make a short hose with 2 female ends for an adapter). It feeds the motor and I have ran mine several times with no problems. I have done this quite a few times for initial fire ups, however I wouldn't let it run for hours... The other option is to leave the d-shaft coupler disconnected if you are worried about the pump.
    It's a berk 12jc.
    The hose fitting pumps out of the pump, not in, so the pump would be dry if I leave it hooked up to the motor(drive line).
    I need to run it for 20-30 minutes to break in the new cam.
    My understanding is that is a no-no.

    I can hook a garden hose up to the motor no prob, but I don't want to cook the pump.
    100 years from now, none of this will matter.

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    Senior Member PonyFiveO's Avatar
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    Couldn't you just back it down the launch ramp at Modesto Res, and break it in while strapped to the trailer? Set your reverse bucket halfway open like you are in neutral. You should have the ramp all to yourself and be able to run it as long as you need.

  7. #5
    Senior Member jyeager's Avatar
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    Quote Originally Posted by jet460 View Post
    It's a berk 12jc.
    The hose fitting pumps out of the pump, not in, so the pump would be dry if I leave it hooked up to the motor(drive line).
    I need to run it for 20-30 minutes to break in the new cam.
    My understanding is that is a no-no.

    I can hook a garden hose up to the motor no prob, but I don't want to cook the pump.
    The most easy way is to unhook the driveline. Its not too bad doing it on mine.

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    Senior Member YumaJet's Avatar
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    Quote Originally Posted by jet460 View Post
    Just put new heads and cam in my 460.
    I need to break it in on the trailer.

    Any way I can do this with the
    pump hooked up?(Expecting a "hell no!")

    The drive line is a major PITA to install or remove with the motor already in, or at least it looks that way.

    .
    would you rub your johnson on sandpaper for 20-30 minutes?


    no, so remove the driveline.
    boatless....

  9. #7
    "BOATLESS" blender over's Avatar
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    Quote Originally Posted by YumaJet View Post
    would you rub your johnson on sandpaper for 20-30 minutes?


    no, so remove the driveline.

  10. #8
    Purple headed member Quickjet's Avatar
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    Quote Originally Posted by YumaJet View Post
    would you rub your johnson on sandpaper for 20-30 minutes?


    no, so remove the driveline.
    'bout sums it up right there......

    Quote Originally Posted by thatguy View Post
    I used to believe QJ was a gay black man..

    Quote Originally Posted by Havasu Secret View Post
    Keith...
    Real Fast Big Blocks are always V-Drives

  11. #9
    Senior Member jet460's Avatar
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    Quote Originally Posted by YumaJet View Post
    would you rub your johnson on sandpaper for 20-30 minutes?


    no, so remove the driveline.
    I know, I know. Stupid question.
    But fantasy is free, so why not ask anyway.

    I did try to shave my head with a cheese grater once, but I don't drink any more, so...
    100 years from now, none of this will matter.

  12. #10
    Living in a cage of fear thatguy's Avatar
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    If you look closely down at the floor here, you can see the hose bibb with a gate valve on either side of it. The front one goes to the Engine/ headers, the rear one to the pump.

    I hook up the hose, get flow through the engine, then pinch it down, open the rear one and flood the pump. I also pinch down the engine dump at the Thermostat housing to maintain full water level in the engine.
    It works for firing before towing to the Lake, but I would be VERY hesitant to run it for any length of time like a cam break in.

    Tommy
    Quote Originally Posted by Rexone View Post
    Tommy please remove all Jimsplace quotes from your sig and don't put more back. He doesn't like it and it is against the rules. Thank you.
    "So as through a glass, and darkly
    The age long strife I see
    Where I fought in many guises,
    Many names, but always me."

    Gen. George S Patton

  13. #11
    T&Y
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    I run a hose connection that splits the water between the pump and engine anytime it's running on a trailer..... BUT I wouldn't run it like that for a "Cam Break In" session. Too high RPM's and for too long in my opinion (I don't claim to be a jet expert). Last time I did this I took it to Elsinore, talked to the guy and the gate, and he told me as long as I didn't actually back it off the trailer he wouldn't charge me anything. Worked out good.

    If you could disconnect the driveshaft that would be your best bet.

  14. #12
    Senior Member jetboatperformance's Avatar
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    Quote Originally Posted by YumaJet View Post
    would you rub your johnson on sandpaper for 20-30 minutes? no, so remove the driveline.
    interesting analogy Albert

  15. #13
    Senior Member Widetrack's Avatar
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    Before installing the motor break it in on a motor cradle! Then install the motor in the boat! Check around someone has one that you can use! Just a thought!


    SOMEONE SAID YOU CAN'T TAKE IT WITH YOU! SO,IM BURNING IT UP ONE GALLON AT A TIME!
    WT

    WFL Crew!!!

  16. #14
    Senior Member jetboatperformance's Avatar
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    Quote Originally Posted by Widetrack View Post
    Before installing the motor break it in on a motor cradle! Then install the motor in the boat! Check around someone has one that you can use! Just a thought!
    Coby Broke this BBF in On the Shipping "pallet" we made before it went to Louisiana , bout ready to build a similar device from steel to do just what your talking about Tom

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