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  1. Texasmark

    2012 40 HP 3 Cylinder EFI Lower Unit Clutch Dog/Cross Pin Assy

    The shift cam that puts pressure on the pointed cam follower on front of the prop shaft is in the smallest radius position (least force) in the F position allowing the spring to extend the most and force the clutch dog to rest in the rear of the F gear. N is the medium radius and pushes the cam...
  2. Texasmark

    STAINLESS OR NOT

    I bought a new 18' Caravelle tri hull in 1972 with a 125 Johnson, factory aluminum prop. In 1973 the SST came out and since I dinged the alum almost every time I took the boat out I spent the $185 for the SST as I previously stated. One of my better decisions in life. Sometime later our work...
  3. Texasmark

    Performance expectations for a smaller boat??

    Round chine, deflection rails along the chine tells you that it rides in the water and the rails are to deflect the spray coming up. A lot of stuff in that boat. If you just want 20 you probably will make it. Looks like it has been well cared for and not a lot of usage. We both know what...
  4. Texasmark

    Recommended DVA meter or DVA adapter for a Fluke digital meter

    You can make one: 600V 1 amp. diode, wired with the anode to the signal source and cathode to the output wire (where you attach your + meter lead) which also contains a capacitor and bleed resistor. Select a meter DC range that exceeds the value of the voltage you will be measuring. Values...
  5. Texasmark

    Dog clutch position

    The "overrun clutch"sloped area.....that mates to the overrun clutch slope on the rear of F gear is on the correct end of the prop shaft. The other end has vertical walls to mate with the vertical walls on the rear of the R gear because there is no "overrun clutch" function on R...
  6. Texasmark

    Is this going to be a problem?

    Other thing is the diameter and inner shape of the thrust washer. You ought to be able to go to a well entrinched boat dealer with a wall full of used props and a box full of thrust washers and find a thrust washer that correctly fits your new prop to your propshaft. If you look at the...
  7. Texasmark

    Performance expectations for a smaller boat??

    Not 25 MPH with that load....by yourself I'd agree. Part of the equation is also the shape of the hull.....rounded chines like Alumacraft used to use or hard chine and especially a hard "reversed" chine makes a lot of difference in getting the hull up and out of the water to reduce drag and...
  8. Texasmark

    Thermostat closing position

    On what comes out when, oil floats on water. Lot of farmers drain off their condensation by opening the drain plug and watching the water come out and when oil starts coming out they plug it back in and top off the crankcase with the appropriate oil. A 2012 Mercury, even if used in salt water...
  9. Texasmark

    Thermostat closing position

    I know nothing about your engine except that the water and oil circuits don't touch each other. Your water in the oil is probably condensation from humid areas and temperature changes. It happens in farm equipment all the time. Possibly the engine design needs "some" cooling under all...
  10. Texasmark

    Need to reduce ventilation

    By angling the blades to the rear you provide a semi-horizontal surface, not provided by props without it. Trim allows you to tilt that horizontal surface such that water pressure on the blades cause an uplifting motion for the bow of the boat.....like Ailerons on an aircraft. My first...
  11. Texasmark

    STAINLESS OR NOT

    On the "Rude SST" if you missed it.....posted about this somewhere before. I bought a new rig in 1972, 18' Caravelle with a 125 Johnson. OEM prop was aluminum. The local lake was a fresh fill with lots of saplings. We'd go out on usually Sunday afternoon. Monday during my noon break, I...
  12. Texasmark

    Need to reduce ventilation

    The Hustler has "rake", bending back of blades from the root. This is your source of bow lift.
  13. Texasmark

    Need to reduce ventilation

    Whether it applies to what you are doing or not, my experience with the location of the AV plate vs oncoming water is: If plate is below the surface of the water coming out from under the transom at speed, trim will have a pronounced effect on bow rise and increased speed with a reasonable...
  14. Texasmark

    STAINLESS OR NOT

    The Ballistic was bought at a decades old marine dealer that had a wall full of props and thrust washers. Paid $200 for it. My TPs all ran just over $100.
  15. Texasmark

    STAINLESS OR NOT

    "Running a SS prop on a 90hp motor is futile" Not so sir. My Ballistic SS had stellar performance on my BB as I indicated above on my 2002 stock Merc. 90 2 stroke when it was around 10 years old. My Avatar speaks for itself.
  16. Texasmark

    STAINLESS OR NOT

    According to TP, the only difference in props is blade thickness which I doubt would change WOT 100 RPM. I ran a 24 P SS Ballistic on my 17.5' stepped hull alum BB, picture of it in my Avatar kissing 50 at around 5600 RPM. Rev max spec. is 5500 but I don't have a problem running over it.
  17. Texasmark

    Help! 2000 Johnson 90hp V4 overheating on one side only...

    Possibly the mechanic that setup the carb jets didn't get it right. Running an engine too lean has caused higher than normal temps and as I recall the carbs on those v4s (I had a new 1972 125 HP Johnson) had separate channels for each cylinder....aka 4 paths into the engine.....I assume that...
  18. Texasmark

    Tell tale or bubbler what’s normal w/o a thermostat

    Water needs to be above the impeller, amount depends on the engine being tested. Yours looks OK. You are dumping exhaust into the water so expect it to warm up. Engine thermostats of which I am familiar are in the range of 125-145*F. An engine without a tstat will just run a few degrees...
  19. Texasmark

    Need to reduce ventilation

    I would think dropping the engine one hole will solve your problems considering your rig. I have 4 or 5 Turning Point Hustler aluminum props and they are all cupped with "rake.....gets the bow up at higher speeds", and for an aluminum prop, they have (advertise the point also) all the goodies...
  20. Texasmark

    Suggestions on how to fill my onboard gas tank?

    This is irrelevant bit I felt compelled to say it anyway. On the subject of "filling gas tanks", remember the days when the tank was mounted on the rear of the outboard engine and you had to lean over the stern to fill the tank from a 5 gallon gas can you brought along? And.........great...
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