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    Other OMC mechanic's, shift dog replacement

    There has been a number of post's about replacing the shift dog, and forward gear after having an engine jumping in, and out of gear at WOT. Certainly if the dog, and gear show wear at the engagement surface, the rule is to replace both. On some engine's this call's for facing the dog in a...
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    Magneto, C-D, No spark with plugs in.

    Some time back, someone posted a problem they were having with their engine where they had fire only when they removed the spark plugs. What brings this subject to mind is that I just ran into this problem. What I want to bring up is that the sensor coils on the 73 thru 77 3, and 4 cylinder...
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    Dhadley, V-4 mods

    Some time back you gave directions on milling out the intake manifold. Do you recall about where you were with jetting? Did you make any mods to the exhaust system?
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    electro-matic, hydro-electric ! confusion with gear oil

    OMC made three types of shifting systems, electro-matic, hydro-electric, hydro-assist. The electro-matic used a electro-matic coil that whould, when energized attract a coil spring, ground & wound in square section that wrapped around a knurled hub of the gear, " knurled on forward gear only"...
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    Dhadley, Intake manifold mod.

    When you cut out the wall on the V/4 manifold, I'm not sure how you did this. Could you possibly show a sketch, or explain a little more about it. What engine had the 1 1/4 in. carbs? Thanks in advance. At 7400 RPM, that engine you built must of had quite a sound.
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    Loose flywheels, another problem

    When ever the topic of flywheels comes up we always caution to use proper torgue. Over the years I have pulled a number of flywheels that showed quite severe rusting, and pitting on the hub, and crankshaft tapers. A machinist friend pointed out that this is caused by a condition called fretting...
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    Old engines, getting rings unstuck

    For you guy's trying to salvage an old engine where rings are unavailable, or hard to find. I have been using this method for derusting old tools, or parts for some time. Use a plastic container. Get a box of Arm & Hammer washing soda. Hang the piston upside down by the connecting rod, suspended...
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    Pulling Flywheels, a word of caution

    I see on this board many times, "pull the flywheel" These wheels are held on with a consideral amount of torque, up to 145 ft. lbs. on the large engines. These are not lawn mower engines, " loosen the nut, strike with a hammer" You can do a lot of damage to the crank, flywheel, and crank...
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    OMC carbon guard, does anybody use it?

    Do any of you members use OMC carbon guard on a regular basis? What has been your experience with it?
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