drive line
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drive line

  1. #1
    I'm No Expert Shaun's Avatar
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    Default drive line

    Since setting my pump back and adding a jetaway my drive line needs to be 0.75" longer. I have a PTO flang that i bought way back and never used because my drive line is one of those that bolts up right to the fly wheel. It's about a 1" long. I'm thinking i could have sombody shave off 0.25" and stab some longer bolts that would run through the drive line, pto and into the crank. I'm wondering if that would be a ok thing to do, or if the longer bolts would create a weak point.

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  3. #2
    Screamin SeaMonkees Schi-502's Avatar
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    Shaun,

    Bolts can be shortened.
    Loose, the Dogs of War!

  4. #3
    JetBoat Marine Parts&Svc jetboatperformance's Avatar
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    Shaun personally I'd abandon what sounds like an older "rock well" and opt for a new 1310 DL/PTO combo 8.5 oal versus the other setup ,if you do go that way you'll likely have to machine the rear face pto to "register" the "rocky" Tom

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    Senior Member Brendellajet's Avatar
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    Pretty sure I've read the rockwells are indestructable....As long as you maintain/replace the universals.
    "He is a lover, not a fighter. But he's also a fighter, so dont get any ideas."

  6. #5
    I'm No Expert Shaun's Avatar
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    Had to raise the motor 1/2" all the way around and then found that the drive line was almost perfect length. Right now i get about 7/8" of spine into the drive line. Was told i want 1" to 1.25" so, now i'm trying to figure out that one.

  7. #6
    Sit N' Spin Jetaholic's Avatar
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    Quote Originally Posted by jetboatperformance View Post
    Shaun personally I'd abandon what sounds like an older "rock well" and opt for a new 1310 DL/PTO combo 8.5 oal versus the other setup ,if you do go that way you'll likely have to machine the rear face pto to "register" the "rocky" Tom
    Tom, not to thread jack but was curious...

    With a 1310 drive shaft and in the 450-500hp range, what type of bolts should I be using?



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