Checking out the bottom end. - Reply to Topic

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Topic Review (Newest First)

  • 02-13-2012, 06:29 PM
    dja4260
    Thus far my dad is replacing

    -Rod bolts (3rd stretch)
    -Bearings
    -Changing valve springs
    -Lifters rebuilt



    We found one cam lobe that had signs of obvious wear and he hasn't told me what he wants to do with that issue. He thinks Lifter needle bearings caused this.
  • 02-09-2012, 07:35 PM
    e85hater
    You would think, it would be the other way around..How about the dart big M blocks???
  • 02-08-2012, 08:56 PM
    gn7
    Quote Originally Posted by wildstreak View Post
    you should get a lighter boat
    Not really. They are perfect for semi permanent mooring. They are heavy, and even if someone should haul it up, once they see what it is, they ususally throw it back. A stock GM 2 bolt block with missing main caps, on the bottom of the lake for 5 years is worth more to most intelligent builders, than a steel cap Merlin down there for a week.



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  • 02-08-2012, 08:45 PM
    piston in the wind
    Quote Originally Posted by Hass828 View Post
    , there is certainly signs of cap walk in that pic.
    U should c mine his looks new.
  • 02-08-2012, 07:17 PM
    wildstreak
    Quote Originally Posted by gn7 View Post
    No thanks. I already have 2 I use for boat anchors. They are perfectly adapted for that task!
    you should get a lighter boat
  • 02-07-2012, 09:53 PM
    gn7
    Quote Originally Posted by Hass828 View Post
    , there is certainly signs of cap walk in that pic.
    Yes there is. I have seen worse, and considering the length of the arm and the RPM, I am not surprised. Splayed steel caps can only do so much. Like I said, there is a reason the 427 Ford, Chrysler 2nd and 3rd Gen Hemis, the GM LS series, the Ford Mod series, and the New Century all have cross bolted deep skirt blocks. And it isn't because its cheaper to build!!

    I don't care how hard you clamp something, it can still move if you put enough coal to it. You can pin it, dowel it, use locator sleeves, and if the main bulk head moves, it is going to leave evidence of it.
    I think you would be amazed to know how much a billet top fuel block moves around during a run.



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  • 02-07-2012, 08:59 PM
    Hass828
    Quote Originally Posted by gn7 View Post
    No thanks. I already have 2 I use for boat anchors. They are perfectly adapted for that task!
    , there is certainly signs of cap walk in that pic.
  • 02-07-2012, 07:28 PM
    gn7
    Quote Originally Posted by wildstreak View Post
    Not enough sleep for me today. Its the Merlin block that has dowel pins and for enough money I can ship you one.
    No thanks. I already have 2 I use for boat anchors. They are perfectly adapted for that task!



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  • 02-07-2012, 07:10 PM
    wildstreak
    Quote Originally Posted by gn7 View Post
    I am kind of new to this whole Hi Po thing. Can you point out the location of these "dowel pins" for me?
    Not enough sleep for me today. Its the Merlin block that has dowel pins and for enough money I can ship you one.
  • 02-07-2012, 05:17 PM
    gn7
    Quote Originally Posted by wildstreak View Post
    Thats a Dart block, and they have dowels to locate the main caps, so no squirming around.
    I am kind of new to this whole Hi Po thing. Can you point out the location of these "dowel pins" for me?




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  • 02-07-2012, 04:37 PM
    wildstreak
    Quote Originally Posted by sleekcrafter View Post
    Is that evidence of main caps walking? center of the cap looks to have been moving around??

    Cam gear looking alright? check cam bearings, and block face at the cam gear/belt.

    Black oil could be excessive fuel....
    Thats a Dart block, and they have dowels to locate the main caps, so no squirming around.
  • 02-02-2012, 10:46 PM
    mustangmark

    just my opinion

    If you have the motor tore this far down....MIC. EVERYTHING! Or send it in and have it done. With your motor tore down this far and talking about replacing bearings...there's no reason not to. Checking all your clearances will tell you everything you need to know when it comes to what needs to be fixed and what is ready to go. I didn't read all the post...just scanned through this but.....depending on how hard this motor was run, it would also be a perfect time to replace your rod bolts if needed. Check the stretch on them or have someone do it for you.


    just looked through your pics.....nice motor. Looks like it's got some nice pieces in it!
  • 01-26-2012, 02:42 PM
    dja4260
    Quote Originally Posted by WETTE VETTE View Post
    So I assume your dad is John? I was there when he delivered the boat to Al and we spoke on the phone a while back about impellar choices for a new motor that I helped Al rig and install. He will be testing in the spring and I'm sure we will bend your dad's ear once he gets some speed / RPM info with the new motor.

    Tell him Craig says hi!

    Yes you got the right guy. Good luck with the testing and be safe!
  • 01-26-2012, 02:28 PM
    WETTE VETTE
    Quote Originally Posted by dja4260 View Post
    Yes my dad sold a jet boat to a man in Indiana. I've never meet him nor know his name. I did hear that he has a bunch of fun toys.
    So I assume your dad is John? I was there when he delivered the boat to Al and we spoke on the phone a while back about impellar choices for a new motor that I helped Al rig and install. He will be testing in the spring and I'm sure we will bend your dad's ear once he gets some speed / RPM info with the new motor.

    Tell him Craig says hi!
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