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    hydrofoil

    should the hydrofoil be in the water or on top of the water? My motor is set so the foil rides just under the water about one inch. Several people here have said the "x" dim needs to be as high as possible, which is correct? I have a stingray XP foil.
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    prop pitch difference

    I am currently running a 13 1/2 18P 3 blade s/s prop on my jon boat with a fresh rebuild on a 1991 60hp Johnson wot is 6000rpm with a trim out of almost 6400 rpm. "runs Good" I have a chance to buy a 12 3/4 19p 4bade s/s Spinelli bros prop any idea what the rpm bifference or performance will...
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    Looper

    what does the term looper & crossflow mean I see it here all the time when refering to certain motors. I suppose it inline motors opossed to v motor block configuration
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    OMC Raker

    I have a 1991 60hp 3cyl Johnson it has an aluminun 13 1/4 x 17 prop on it. With a load it will turn 5900rpm trimmed out it turns 6200 I have a chance to buy a OMC Raker part # 394758 prop but I am not sure it will fit it is a 13 1/2 x 18 it said it will fit OMC Cobra but I am not sure what the...
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    Sierra Prop

    has anyone ever heard or had any experience with a Sierra Prop I have a chance to buy one reasonably but want o know what anyone thought of it, it is a stainless steel 3/blade
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    spark plug gap

    Is there any advantage to increasing the gap from the recommended .030 to .040 I have a 1991 3cyl 60 hp Johnson with a new powerhead on it. I plan on using the Pennzoil blended oil after it gets broken in.
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    Prop question

    After replacing powerhead on a 1991 Johnson 60hp and installing it on my 17' Lowe roughneck jon boat, it has a 13 1/4 17 propellor on it. The boat will turn 5900 wide open, whats the verdic is this ok or do I need a 19 prop if I am correct that will drop the wide open rpm to 5500 it seems to run...
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    Cylinder head

    Is there a difference in cylinder heads on a 1990 60hp Johnson and a 70hp Johnson I will need to rebuid the powerhead and am thinking this might be a way to increase hp on the 60, also are Boyesen power reeds worth the expense? This motor is on a fishing boat.
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