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    What RPM tach do i need for a 1976 mercury 115hp?

    Well i need to buy a RPM tach to break my engine in just rebuilt it. So i see that there are different poles and all kinds of stuff. So which one do i need. I want to get out as cheap as possible but i still want the tach to work and be accurate. I dont need all the bells and whistles just a tach.
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    Need help quick!!!!!!

    Do i need a special rpm gauge for my 2 stroke engine? Or can i buy one out of advance auto? Need to know soon as possible. Thanks, Shadow
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    1976 thunderbolt 115.

    I have read a little on this engine and people say if you have the wrong prop you can burn up the #3 piston. The prop i have is a SS 21pitch. So you think this will be the right pitch.
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    1976 mercury 115 pistons???

    I just bought this engine yesterday. My dad did a compression check on all the cylinders and all had 120psi except number 3 which was 60psi. So he thought no big deal replace that piston and good to go. Well we just took it apart and I now need to replace three pistons one is cracked one is...
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    Need help with compatibility issue.

    I am selling a OMC stringer upper gear case that came off of a 307 chevy engine and a guy ask me this question. ? Hi, I have a OMC 400, its a 1981 120hp motor, I blew the upper gear case and looking for a new one, I believe 77 is when they changed the stinger around a bit, but I don't know. Can...
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    1976 Gull Wing Engine

    I had an 1976 Gull Wing and took out the engine its an orignal 307 that came in it. It has been rebuilt and runs great it is still ready to be droped in antother boat. My ? is how much is this engine worth.:confused:
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