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Thread: Parksy's gq

  1. #531
    Patrol Freak Parksy's Avatar
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    Head is back together and installed with new bolts and a genuine head gasket. I spent a good hour doing the torque sequence and making sure the bolts had stabilised at each torque. Also wiped the block and heads clean about 10 times to make sure they were meticulously clean.
    I've had the problematic water ports blocked off at the rear of the number 6 cylinder. I'm not concerned about this causing issues.
    Rocker gear all cleaned up and installed. Will set the clearances tomorrow. Intake next, waiting on some gaskets for the oil cooler, then it's time to reinstall it into the patrol.
    IMO and should be taken with a grain of salt.

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  3. #532
    Patrol God nissannewby's Avatar
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    Didnt happen to do any balancing while it was apart?

  4. #533
    Patrol Freak Parksy's Avatar
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    I weighed the rods and pistons and found one slightly heavier than the rest. I brought the weight down slightly to get them all to about 5 grams within each other. Was going to get them all to within a gram of each other but found it a time consuming process.
    IMO and should be taken with a grain of salt.

  5. #534
    Smart like tractor Ben-e-boy's Avatar
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    Quote Originally Posted by Parksy View Post
    I weighed the rods and pistons and found one slightly heavier than the rest. I brought the weight down slightly to get them all to about 5 grams within each other. Was going to get them all to within a gram of each other but found it a time consuming process.
    Wow, I didnt think they'd be that different, maybe a gram or 2
    96 GQ coil/Cab
    08 G6eT


  6. #535
    Patrol God nissannewby's Avatar
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    Quote Originally Posted by Parksy View Post
    I weighed the rods and pistons and found one slightly heavier than the rest. I brought the weight down slightly to get them all to about 5 grams within each other. Was going to get them all to within a gram of each other but found it a time consuming process.
    Imagine what 5g translates to with the inertia that is present in a reciprocating piston engine. Balancing of the parts and rotating assembly goes a long way to making the car drive nicer. It doesnt really net you any performance as such but is just much smoother in its operation. Balancing really isnt that costly of an exercise either and its surprising how many people who rebuild engines and dont do it.

  7. #536
    Patrol Freak Parksy's Avatar
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    ben e boy, it would be a gram or two except one of the rods/piston combos was 5 grams lighter than the heaviest. Otherwise they would be a gram or two within each other.
    Nissannewby, agreed. Just laziness on my behalf.
    Last edited by Parksy; 3rd January 2017 at 09:52 PM.
    IMO and should be taken with a grain of salt.

  8. #537
    Patrol Freak Parksy's Avatar
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    But with that said, it was worse before I started.
    IMO and should be taken with a grain of salt.

  9. #538
    Smart like tractor Ben-e-boy's Avatar
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    Quote Originally Posted by Parksy View Post
    ben e boy, it would be a gram or two except one of the rods/piston combos was 5 grams lighter than the heaviest. Otherwise they would be a gram or two within each other.
    Nissannewby, agreed. Just laziness on my behalf.
    Woops. I misread that post...

    For future reference if you want, it cost me about $550 to get mine balanced,
    96 GQ coil/Cab
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  10. #539
    Patrol Freak Parksy's Avatar
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    Engine is finished. I forgot to mention that I've lapped the valves and installed new valve springs. I filled the engine with oil and primed the oil system. Worked up a sweat but was happy to see oil coming out of the rockers. Installed the spark plugs and was surprised by a strange restriction that wasn't ever felt with the last engine when I turned it over. It has compression!!
    It's currently sitting installed in the patrol with thanks to my wife. Tomorrow after I bolt everything else up, hopefully I can go for a start and run it in.
    Does anyone have any recommendations for a run in procedure?
    IMO and should be taken with a grain of salt.

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    Rossco (5th January 2017)

  12. #540
    Patrol God nissannewby's Avatar
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    Do you have something in mind for run in?

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