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  1. Texasmark

    Speed Plateaus at 5200rpm

    Thanks for adding to this convesation!
  2. Texasmark

    Speed Plateaus at 5200rpm

    That's what I remember as I was working with pipe contained fluids. I wasn't playing with my boat at the time.....grin
  3. Texasmark

    Speed Plateaus at 5200rpm

    I guess I need to re-read my fluid dynamics Physics books. I recall just the opposite. Agree on the other subject you mentioned being suspect. At least he is dealing with a new engine so one could eliminate that. Having had another engine installed and assuming that he maintained his...
  4. Texasmark

    Speed Plateaus at 5200rpm

    Interesting comparison Scott. So tell me sir, just why do people who leave their boats in salt water use antifouling paint on the waterborne hull and remove their boat periodically for Barnacle removal? I can't make heads or tails of the photo. Your hand can give you the answer....if it...
  5. Texasmark

    Speed Plateaus at 5200rpm

    I think you found your "smoking gun".....figure of speech.....the rough hull area and it encompasses all the planing area when you are running at top end. To give you and example of how bad that can be, I used to take family vacations at the inlaws lake house and keep my boat in the water the...
  6. Texasmark

    Speed Plateaus at 5200rpm

    Summarising your feelings with what has been said/seen ? Maybe your boat weighs a lot more than it did when manufactured......floatation foam has absorbed a lot of water, usually the case when the boat has been sitting in the water or outside uncovered. With the 2.59 gear ratio on the...
  7. Texasmark

    Speed Plateaus at 5200rpm

    Even though you have a nice wave slicing bow, your boat seems to have a "semi-V" hull characterized by that bow and a flat stern area. The flat stern is your best planing surface other than a "pad" type hull used on bass boats traveling at speeds exceeding 60 MPH driven by high HP engines. I...
  8. Texasmark

    is a 60hp outboard too small for this boat

    Recapping what has been said and adding my 2c: Check the fuel lines in the engine and replace if needed...cracks/leaking at connections...remove one and Q-Tip wipe the inside...if any black rubber specks replace all the fuel lines.....also the fuel line and bulb between engine and tank....and...
  9. Texasmark

    Spectrum 16 Sport anyone?

    Well it looks to be aluminum and that is your greatest asset as the only wood rot you might experience would be the deck (floor) and that isn't a biggie to replace. The transom is usually wood but usually not a problem unless it sat out in the rain with the drain plug inserted and filled up...
  10. Texasmark

    Hydroplane fin

    I ran an 8' wooden hydro...stepped hull with a 10 HP Scott Atwater, all stock including 2 blade alum. prop, without a fin and never felt that I needed one when I was a kid...my first boat. Maybe the step made a difference, I don't know. Only fins I have seen were mono-hull, semiVs and it was...
  11. Texasmark

    15a fuse blows immediately on mercury 60

    Other than mentioned above, follow the lead leaving the fuse and find connections attached to that point. Remove all but one and start with that connection. If the fuse holds, start adding wires one at a time and testing. Your problem circuit will raise its head. Then we will help you...
  12. Texasmark

    15a fuse blows immediately on mercury 60

    Good point here. A corroded fuse to connection interface becomes a resistive element. Pushing current through a resistance generates heat and heat from over current conditions is what blows fuses. If the heat is coming from the fuse to terminal connection it has no way of knowing what is...
  13. Texasmark

    NGK BUZHW-2 replacement

    I had the last year of the 115 "tower" manufacturing. Folks on here said that was 1988 but my engine's title said 1989. Regardless, I bought the rig new in 1989 and kept it 7 years. Did nothing to that engine but add gas and oil. It loved 6k RPM on my Ranger. At WOT, on the pad, I could...
  14. Texasmark

    Too much motor on 11ft aluminum boat ???

    " My only worry is overpowering the boat. Definitely don’t want to loose the motor or flip the boat somehow." If you did that....something stupid.....I sincerely doubt that the 2 HP difference would be the deciding factor!
  15. Texasmark

    1997 Landau 1650 need more speed

    I had a 16' 11" Ranger 680C Ranger Fisherman with the high deadrise, standard Ranger 6" setback transom (from the end of the pad), and pad like their bass boat series, just a higher deadrise at the transom and narrower width. Ran a 1988 tower of power 115 with an original 24P Laser. On my...
  16. Texasmark

    Too much motor on 11ft aluminum boat ???

    I had a 10-11' Alumacraft semi v rounded chines and ran a 5 1/2 Johnson on it......slow and sluggish. I sold it and later bought another boat. It was a 10' "Lake John" built by a popular aluminum boat mfgr......just remembered and edited: Lowe brand. I ran a Merc 7 1/2 on it and it was a...
  17. Texasmark

    1997 Landau 1650 need more speed

    Not necessarily. I had an all stock rig: 17 1/2 Fishmaster Travis Edition Bass Boat With a 2002 2 stroke 90 Merc running a Ballistic 13+x24P at 56-5700 RPMs kissing 50 GPS. Avatar is a picture of the wake.
  18. Texasmark

    Quicksilver prop query

    I have an early model Laser II with the square ports, 13+x20. The hub is pressed in and ran on my 2002 115 on a Crestliner 1750 with the same size gearbox as your 75, just used a 2.0 gear ratio. If your boat isn't loaded down with a lot of coolers and lunch. and the engine is putting out the...
  19. Texasmark

    15' pathfinder tunnel hull issue getting on plain!

    Does this picture tell you anything, i.e. 60 ponies, not 40, 4 blade prop for better grip and usually the blade shape is designed for stern lift, not bow lift like most 3 blade SS props......with the HP to twist it.....your comments about RPMs in the hole shot is typical of 2 strokers when...
  20. Texasmark

    Low RPM's and looking for higher top speed

    Carl Kiekhaefer originally used 2 blade props on his engines as the fewer the blades the higher the prop efficiency due to turbulence disturbances in the blade area caused by multiple blades as I read in historical records. So, theoretically, one should expect a drop in RPMs with the extra...
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