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Thread: Rebuilding motor need help With stiffness

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    Jordanmartinchr's Avatar
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    Default Rebuilding motor need help With stiffness

    So I'm rebuilding a 5.9 motor out of a durango. I didnt remove the piston crank cam or any mains. Only removed intake heads and oil pan.
    I have the timing set on and lapped the valves cleaned the heads and connecting rods. When I put the re assembled head on along with the rocker arms and pushrods the motor will turn over until it hits one spot and stops dead in it's tracks. If I loosen the rocker arms to release all the tension it gets easier.

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    Did you have the timing chain off?
    Cam is off....DO NOT force it....That's a valve hitting a piston.
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    Quote Originally Posted by Adobedude View Post
    Did you have the timing chain off?
    Cam is off....DO NOT force it....That's a valve hitting a piston.
    Yeah I pulled the whole timing set off and got new sprockets. And chain.if the tim ing is off what's the proper way to get it back in the right?

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    Quote Originally Posted by Jordanmartinchr View Post
    Yeah I pulled the whole timing set off and got new sprockets. And chain.if the tim ing is off what's the proper way to get it back in the right?
    Start from scratch....

    Install the chain with the crank and cam gears dot to dot on #1 compression stroke! Most important step in the whole job.
    Crank dot at 12, cam gear dot at 12
    Last edited by Adobedude; 01-14-2018 at 02:38 PM.
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    Quote Originally Posted by Adobedude View Post
    Start from scratch....

    Install the chain with the crank and cam gears dot to dot on #1 compression stroke! Most important step in the whole job.
    Crank dot at 12, cam gear dot at 6.
    I'll have to do that tomorrow afternoon
    And if I pull the timing cover and those line up what would be another place to look?

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    Quote Originally Posted by Adobedude View Post
    Start from scratch....

    Install the chain with the crank and cam gears dot to dot on #1 compression stroke! Most important step in the whole job.
    Crank dot at 12, cam gear dot at 6.
    I'll have to do that tomorrow afternoon
    And if I pull the timing cover and those line up what would be another place to look?

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    There won't be anywhere else to look, but the #1 piston will have two TDCs, one exhaust, one compression. it has to be TDC on the compression.
    Last edited by Adobedude; 01-09-2018 at 05:28 AM.
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    [QUOTE=Jordanmartinchr;524869]I'll have to do that tomorrow afternoon
    And if I pull the timing cover and those line up what would be another place to look?[/QUOTE]

    Missing any sockets?

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    Quote Originally Posted by Adobedude View Post
    There won't be anywhere else to look, but the #1 piston will have two TDCs, one exhaust, one compression. it has to be TDC on the compression.
    That might be where it messed up didn't even think about it having two top dead centers, more than likely I used exhaust instead of compression.
    Will I have to get a new timing cover gasket?

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    Quote Originally Posted by Jordanmartinchr View Post
    That might be where it messed up didn't even think about it having two top dead centers, more than likely I used exhaust instead of compression.
    Will I have to get a new timing cover gasket?
    I would get a new paper gasket, the crank seal should be ok.
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    [QUOTE=niebs;524872]
    Quote Originally Posted by Jordanmartinchr View Post
    I'll have to do that tomorrow afternoon
    And if I pull the timing cover and those line up what would be another place to look?[/QUOTE]

    Missing any sockets?
    Lol...
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    That might be where it messed up didn't even think about it having two top dead centers, more than likely I used exhaust instead of compression.
    Will I have to get a new timing cover gasket?
    Also at #1 TDC both intake and exhaust valves will be closed judged by observing the rocker arm movement.
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    ^^^ what he said.
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    Quote Originally Posted by Jordanmartinchr View Post
    That might be where it messed up didn't even think about it having two top dead centers, more than likely I used exhaust instead of compression.
    Will I have to get a new timing cover gasket?
    Any tips on pulling the main pulley off? Pulled keeps slipping off the back of the pulley

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    Get a better puller.
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    Don't pull from the perimeter of the balancer/pulley. You might separate the elastomer from the inner and outer sections of the balancer.

    Not knowing what you are using for a puller...you might be able to reverse the jaws and pull through the "windows" on the center section.

    You've had it apart, it shouldn't be too difficult to remove it again.

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    Holy chit! get video and put on youtube for us to watch......
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    Update. Timing was way off and I guess my buddy put the crank sprocket on backwards so I couldn't even see the dot to line it up lol

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    Thumbs up

    Ouch!
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    On this episode of the red-green show........
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    Blame it on your buddy... perfect.
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    But this time... video the first start up.
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    Now hopefully once I get the wire harness nodded for the new style injectors I can find out which one was 7 and which was 8

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    Quote Originally Posted by Jordanmartinchr View Post
    Now hopefully once I get the wire harness nodded for the new style injectors I can find out which one was 7 and which was 8
    Jesus, this just keeps getting better, every time I read this thread......
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