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  1. Texasmark

    Prop help, 90hp Merc

    You have a problem somewhere. If that 4 stroker has the 3.3 gearbox as my 2002 90 2 stroker, running on an aluminum 17.5' Fishmaster bass boat, just me, fuel and gear, I was running a 23P Ballistic 3 blade SS.....making the wake in my avatar....rpms in the 5600 area....right at 50 MPH.
  2. Texasmark

    No water coming out of the pee hole

    Having said what you said about complexity in cleaning it out, knowing you are dealing with mud and a biodegradable insect, I'd do what you usually do with your boat and eventually it will get blown out. I hear you on the pests. I have a farm and they clog up everything and are good at ruining...
  3. Texasmark

    Oil Injection removal

    I pulled the drive gear out of my oil pump on a 2002 90 hp Merc. Went to 50:1 pre mix. Only thing I saw/felt/had different was a light puff of smoke when doing the (start of the) hole shot coming out of the no wake zone that I didn't have before with the 90:1 my service manual said my engine...
  4. Texasmark

    Swap from 3 Blade prop 19P to 4 blade prop

    My Turning Point Hustler 4 blade aluminum props are ported....holes under the leading edge of the blade. As "alldodge" mentioned, getting the RPMs up fast gets the HP up fast and HP twists the prop shaft. The 4 blade has more bite but you need HP to drive that bite if you expect a fast HS...
  5. Texasmark

    Do you use non ethanol gas ?

    I used water absorber fuel conditioners back in the late 1970's because I had a built in tank and worried about the subject. What it got me was one day, in the middle of a large lake running at a good clip, the engine just died. My search results were that a blob of this goo you are talking...
  6. Texasmark

    Prop change rpm gain?

    Go-fast.com is what I use and some folks use a Merc. calculator as I read on here. The calculator is to analyze how well your prop is connecting to the water. It's blind in that it only responds to changes in the listed areas. Changing anything else disqualifies your answer which includes...
  7. Texasmark

    1979 mercury 50hp thunderbolt float height?

    Nobody answered so I will. Yes parallel has been my experience with most floats on most engines both 2 and 4 stroke so I would think that is a good place to start. If you have WOT fuel issues, then allow more fuel to enter the carb which would be a slight tilting of the tip toward the carb...
  8. Texasmark

    Mercury 60hp CT prop question

    If you go with the TP Hustler, you may get a ported prop. I have 4 or 5 of their props in 13+ diameters and they are all ported (holes under the leading edges of the blades. This improves the hole shot but you said yours was fine already. The question is, how? You have to be going fast...
  9. Texasmark

    No Water - How Long?

    There is a guy who posts on here that uses Scott-Atwater in/as his Avatar. Other thing is that there are clubs formed around the brand that I have seen, and probably McCullough also. Just dig around the www and I am sure you will not only find any cross-reference, but probably the OEM part .
  10. Texasmark

    No Water - How Long?

    When I was a teenager (young and stupid....ill informed), dad had a 10 hp Scott-Atwater that I used and tinkered with frequently. Over the years, I can't tell you how many times I ran that engine for a brief period dry, or in the barrel in gear blowing most of the water out of it....well below...
  11. Texasmark

    battery drain when connected to charger?

    Diodes have reverse leakage current usually in the Microamperes. Your internal battery normal discharge characteristic way outweighs that. I noticed for the first time...for some reason I decided to check everything...that in checking my batteries in everything, plus the new spares, they were...
  12. Texasmark

    Johnson 70hp stainless steel prop installation

    Marine dealers that have been in business for a very long time usually have accumulated an assortment of used props and thrust/mounting washers. I bought a used prop from one such business and took the prop and a box full of used washers out to my boat, found the correct hardware to fit the...
  13. Texasmark

    loose wires 90 HP Mercury 3 cylinder

    Yeah. Tan is OT sense wire. If you ground that wire the horn will sound if the key is on. OT sensor is embedded in the water jacket plate on the rear of the block, about mid way down on the left side...to the left of spark plug #2. Possibly the sensor failed (shorted) and the PO just...
  14. Texasmark

    2001 Mercury 150 Saltwater Series (carb) midrange bog after extended running.

    The problem I see with the above comments is its midrange, not WOT. So what in a fuel system would clog at midrange only, and only after hours of operation? And is it the whole engine or are you loosing a cylinder....and how could the cylinder workfine for hours, then clog, then increasing...
  15. Texasmark

    Can I use a Johnson/Evinrude tank on Merc outboard?

    Interesting comment, just pun or factual. If factual, what's the mechanism......I know its jest since OMC was big block torque and low RPMs vs Merc. 1 HP/cuin and 6k WOT.......and NOISY...had both over the years.....but my 2002 115 is very quiet.
  16. Texasmark

    Replace 2002 115hp lower unit

    The lower unit with the 6 toothed R gear is identified with a casting change: Get behind the engine facing forward and look down at the center, rear of the LU, the raised area that extends to the rear of the unit. In the casting, about 2" from the rear end is a diagonal in the casting whereby...
  17. Texasmark

    Hole shot to plain very very slow

    I found this for reference: https://www.smartmarineguide.com/L51899307 That rig ought to catapult out of the water in the hole shot and run 55-60 range at WOThrottle. If the above suggestions don't yield answers, you might weigh the boat as the foam flotation may be saturated if it sat out in...
  18. Texasmark

    Mercury Spitfire X7 vs Solas Titan HR 4

    You realized what I was going to tell you as an aid to making the right decision. The Ports that the Solace doesn't have made the shot difference and when popping a skier out of the hole they help that too....I currently have the Solace HR-4 on my 17.5' Crestliner Fish hawk (Merc 115) because I...
  19. Texasmark

    Prop Fitment

    Service manual for 75-125 hp outboards says 55 ft-lbs....for a number. As stated, good and tight.
  20. Texasmark

    1999 mercury 100hp 2stroke info?

    It idles a tad rough because up to 1800-2000 RPM (depends on how your linkage is adjusted) you are only running on the upper 2 cylinders....but they fire 180* apart like the old OMC "alternate" firing 2 cylinder engines that were smooth running for 2 cylinders. The lower 2 cylinders also fire...
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