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Recent content by Roadblock

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    Question about a motor mount and the pivot bracket? Older motor, bit of play and motor shakes.

    I have an older 1970 Mercury 500 50HP Thunderbolt outboard. I seem to have two issues going on that cause me to have to fight my boat on the water a little bit. By fight, I mean it likes to drift to the left and or right and I'm constantly having to fight it back the other way. The first one...
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    1970 Merc 500 Thunderbolt on a 15 foot Mirrocraft. What pitch prop?

    I have a 1970's Mirrocraft Titan 15. You can see the boat specs on the attached photo. Weight, length etc. Boat has a 1970 Merc 500 Thunderbolt 50HP. How would I go about selecting the pitch that would be best suited for this boat? When I bought the boat it has a Michigan Wheel 10 1/4 x 13...
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    1970 Merc 500 Thunderbolt lower unit gets water contamination on the lake. Where to start?

    Mind you that it's not MUCH water at all but I've noticed that when I come back in from the lake my lower unit gear case has milky white-ish colored gear fluid in it. I always drain it right away and let it drip for a couple hours then fill it right back up til it over flows to push any water...
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    Rebuilding 1970 Merc 500 Ignition Driver, wiring etc.

    The 3 wires that come off my ignition driver on my 1970 Merc 500 are toast. The casing is completely cracked and chunks have fallen off. I could see exposed wiring with corrosion. The 3 wires are covered with about 10 inches of heat shielding so I decided to pull that off, cut back the wires...
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    1970 Merc 500 Thunderbolt idles somewhat but stalls when put in gear and given throttle. Ugh!

    I got stuck out on one of the biggest inland lakes in Michigan today. My Merc 500 is still having issues and will not run! I can get it started but as soon as I try to go, it shuts right down. I can put it into gear fine and it spins the prop and still runs but as soon as I advance the...
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    Need help with fuel issue. Specifically need info on how the tank and gas lines work

    I have an old 1970 Merc 500 Thunderbolt that I can not get started to save my life. Has a factory Mercury metal 6 gallon gas tank. It's probably the one that came with the boat. I just realized I'm not actually getting fuel to the engine via the bulb. I can pump and pump the bulb and it never...
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