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Thread: 263 Street Build

  1. #1
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    263 Street Build

    I doing up a 263 for a fellow. Just starting the tear down. The motor looked like a million bucks. We were to be disappointed.
    263_driver_side.png263_pass_side.png

    There are no through bolts into the head, there should be no sealant or lock-tite used on the head bolts!

    When lifting the head off, glass beads started to flow...
    spilled_glass.png

    Take a look at the head!

    head_glass-1.pnghead_glass-2.png

    If you are cleaning with glass, take some time and blow it out. I have a thermo cleaning system which uses steel shot for cleaning. It has a cycle which is supposed to allow the shot to work its way out, but you must always set the head or block on the shop floor and spend some time blowing it out and turning it over and blowing it out again!

    A quick look at the valves look bad. Many of them are terribly "sunk", here is an bad intake on the right. It's a little late for me to as, but any comments on oversize valve choices. I have already got a set of sbc +0.200" I am figuring to cut down to size.
    valve_intake.pngvalve_sunk_intake.png

    Here is a shot of the cylinder bore:
    bore.png
    It looks like it may have got a light scuff, maybe with a ball hone, no ridge reaming... A quick check shows as much as .010" of wear in parts of the cylinder!
    Tomorrow I will pull the bottom end apart.
    Last edited by Bob; 12-24-2018 at 05:05 PM.


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  2. #2
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    Back when I worked for a living we never used glass beads on an engine. There is always a corner that you cannot see or find and oil will stay there after all the cleaning and glass beads will be attracted there. It does not take many beads to wreck a rebuild. My old bosses said there is a place for glass beading but not on the inside of an engine. I always remembered their advise.

  3. #3
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    We chose another crank, had it ground 10/10 cleaned it up and balanced it. We chose to remove a couple of oil plugs. This allowed thorough cleaning of the oil holes. The plugs were then replaced with 1/8" pipe plugs. The plugs were set in blue loctite and peened.

    crankshaft_plug.png
    The long crankshaft takes up a bit of room on the balancer!
    I8_balance.png


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  4. #4
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    Bob,
    Good luck on the build.
    Pat

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