Recent content by powbmps

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    Not Reaching Max. RPM's....

    So, after fiddling around with my motor (5.7 Vortec, re manufactured) all summer, I have one last issue/concern. I cannot get more than 43 mph/4,300 rpm's out of my setup. Company I bought it from says it should make maximum hp at 4,800 rpm's. It will rev right up to 4,800 and then cut out...
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    Would you use this coil?

    Replaced original Mercury coil 392-805570 with a Sierra coil 18-5438. Mercruiser lists the coil for my motor as part no. 392-7803A4 (primary resistance .6-.8, secondary resistance 9,400-11,700), which cross references to the same Sierra 18-5438. The resistance values I am getting out of the...
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    Testing your boats fuel system.....

    Followed the procedures outlined here in the HOW TO: Testing your boats fuel system thread and have a question about the results. First test for airbound/leaky system - no leaks. Second test for vacuum testingt the fuel system - 0 in. Hg, so no obstructions/restrictions. Third test for testing...
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    New knock sensor bad ???

    So this would be an offshoot of my timing question... I wanted to replace my original knock sensor to see if it affected my timing issues/concerns. Googling the original part number gave me an ACDelco 213-96. Looking for instant gratification, I went to the nearest auto parts store and gave...
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    Initial base timing vs. total timing

    First time posting here, so let me know if I am doing it wrong. Which is more important, initial base timing or total timing? 5.7 Vortec (remanufactured) with new Edelbrock 1409 carb and 2116 intake. Original 1995 Thunderbolt V ignition with new coil, plugs, wires, rotor, cap and sensor. It is...
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