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  1. Texasmark

    Prop question

    I'd check the tach for accuracy. The rest of the inputs are pretty solid....gear ratio won't change, prop pitch won't change, GPS by all counts is dead-nuts-on, so what's left? Maybe you have the dial on the back of the tach at the wrong number.
  2. Texasmark

    Need the Prop Gurus!

    Some body is telling you a story: https://www.go-fast.com/Knowledge-base/Find-your-prop-slip/Prop-slip-calculator Your slip is minus 15.....a screw turning in a block of wood is a slip of zero. Fast boats run in the positive single digits.
  3. Texasmark

    Two year old fuel

    "The biggest problem with old, bad gas is varnish. It hardens in the lines and blocks them, the carbs, and/or fuel injectors and such." You just answered a question I've had for a long time and just didn't pay attention to what I saw. On several occasions I came acroll tan material primarily...
  4. Texasmark

    Prop question

    Used to be that aluminum props were basic design thrust devices that didn't have all the goodies you'll find in SS props....detailed up at the top of this screen under "Shop" and then go to "Props" and then go to the "Tutorial". Every one of these goodies makes for different outcomes. SS...
  5. Texasmark

    Need the Prop Gurus!

    Don't know when Merc started prop rating their engines but they have been accused of running high for their posted ratings. So, you could be running a 100 hp by today's standards, but even at that, that's a big engine for a 16' boat with any kind of a planing hull. What is the history on the...
  6. Texasmark

    Steering cable

    Only problem with a cable is NO kinks. All sweeping turns. If you have to force the turn the radius is too short. Result is kink in center conductor and once kinked, forget it. Yes if too long you can make an S out of the cable to take up the extra length, but sweeping S.......If too short...
  7. Texasmark

    Fixing holes in aluminum boat transom

    If you had some sheet alum, or even heavy plastic cut a square somewhat larger than the hole, rough up with sand paper, degrease/clean both surfaces and attach with JB weld....if you aren't picky about looks.
  8. Texasmark

    How do I properly mount a transducer on a 12 valco v-hull aluminum boat?

    Shouldn't have any bubbles with a TM for power...too slow to generate such. On mount anywhere I mounted mine inside the boat with a" hard setting" epoxy. You are transmitting sound waves and they travel through aluminum better than through the water....more dense. Only reason not to do that...
  9. Texasmark

    Prop for 60HP Bigfoot

    Top of this page, under parts, search for Props. Pull up Props and besides a questionnaire you fill out to find a prop selection to fit your needs, there is a tutorial about props that will answer your I don't know questions. Propeller efficiency drops as the number of blades is increased (per...
  10. Texasmark

    How can i tell how old my sea king 12 ft boat is

    Sea King motors built by OMC (builders of Johnson and Evinrude) and boats were popular back in the mid to late 50's thru mid 60's as I recall for a rough ball park. Alum. boats last through eternity...less the transom wood (which can be easily replaced) if abused. Some have rivets loose that...
  11. Texasmark

    Stuck lower unit

    From Chris1956: "The shiftshaft coupler is splined to mate with the shiftshaft. One could reach under the lower carb and move the shiftshaft up/down to see if it is corroded together at the junction." That's a great idea and I would think a candidate for a "Sticky" considering the outcome if...
  12. Texasmark

    Stuck lower unit

    Ahhhh? My recollection is yes but the female is part of the shift shaft from above and the LU male stub, are both made of metal. Yes they are a slip connection but that doesn't take corrosion into account. If the drive shaft is stuck in the power head, why wouldn't one expect the shift shaft...
  13. Texasmark

    Alumacraft V14

    SWAG: Recalling 50 years ago, I think it's on the order of 5 1/2 ' if you take it at it's widest point....the Beam.....since they had a round (soft) chine....wasn't due to performance initiative, made it easy to take one sheet of aluminum and make half the hull (opinion). I'm thinking you...
  14. Texasmark

    Help with RUN/OFF switch on Commander 3000 throttle control

    Edit: Before you read my dissertation below, go to this www and select switch type KS-2. I think it will be what you are looking for: https://thmarinesupplies.com/products/saf-t-stop-kill-switches-for-boats Since the KS-1 is listed for outboards specifically, and KS-2 is listed specifically...
  15. Texasmark

    RPMs too high?

    You can go to the Crestliner www and look up my boat: 2002 1750 Fish Hawk, dual console, hull is aluminum but it's a heavy aluminum...not a tin can open skiff with a 9.9 type alum boat. I run a 2002 115 2 stroke and a SS Laser II, early edition, 3 blade 20P with me, full tank of gas and gear...
  16. Texasmark

    2005 Mariner 60 hp 2 stroke bigfoot knocking noise

    Check the LU oil anyway. You need to know the condition and lots of folks change it annually.....running lots of hours, or leaving boat in the water for extended periods.
  17. Texasmark

    Will classic fifty power tilt fit on a 08 4 stroke

    I wouldn't hold your breath thinking about it.......
  18. Texasmark

    What Pitch To Buy

    I like to cruise around 3000 rpm which runs me in the low 20's with a lot of slip...per Go-fast.com. I tossed my Laser II 20 P for a 4 blade Solace 19P 4 blade. Perfect. I am surprised it didn't cost me but a couple of MPH and maybe 3-400 RPM. Slip was still high like 15 (but I had a lot of...
  19. Texasmark

    90 hp mercury

    The tach is fed off a signal (grey wire) from the rectifier/regulator. Might check to see that your alternator is charging your battery when engine is running. If that is ok, then it's wiring to the tach or the tach...my guess. I just commented on 2005 engine quitting on another post.
  20. Texasmark

    Sudden shutdown of 1992 Mercury 90hp

    My guess it's spark, not fuel related due to the un announced immediate shut down. I have had CDI module temperature problems on an '02 engine but that only affected 1 module and the others kept running. Common denominator is the trigger pickup coils, 12v to or back from the control box, or...
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