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Should i raise to 41/4 ptp

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  • Should i raise to 41/4 ptp

    stratos 219F 1997 175 hp intruder with kiker 15 hp (90pds) trophy plus 21P = 54 mph at 5800 gps 5" PTP great holeshot
    need to remove the intruder for tilt bushing repair this winter and got a trophy plus 23p so should i raise it to top hole wich will be 4 1/4" PTP to try the 23 next summer or leave it at 5"? installing a jackplate is not possible with the cable steering because of transom shape ( motor is 9 inches lower than sides of transom !not a bass boat configuration and would need hydraulic steering to use JP )


  • #2
    Got a picture of set up height now???
    When in doubt,Trim it out!!!
    Business Owner & Certifed Technician
    Boats I own & use
    20ft Javlin w/250 Junkrude
    17ft Bullet w/200 Merc (SOLD!!)
    13ft Allison w/150 I-6
    17ft Hydra-Sport 175GT
    15ft Allison w/75 Stinger(project)
    14 x 48 Drifter with 1100SS Merc

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    • #3
      all i can find now ! what do you want to see ? pad to prop is 5"

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      • #4

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        • #5
          How about a pic from the side, with the engine down, taken with the camera LEVEL at the height of the boat bottom. One more thing, no close up wide angle lens shot.

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          • #6
            i will

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            • #7
              hope these help

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              • #8
                Your close with the rpms,..

                Although you might get a bit more if you try it,...

                I know guys that ran those in the day that were getting mid 60's out of them,...

                Saw one with a 200ficht on it tht got into the 70's,..

                Great old boat,

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                • #9
                  i do love this boat and with trophy prop really great control turning+++ and for me having no previous fiberglass +175 hp experience its great . but would like to get max rpm to 5500 so not hurting it .

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                  • #10
                    If you’ve got the means to raise it, then raise it, one hole at a time. Keep an eye on your temp gauge.
                    1990 Wellcraft Eclipse 196
                    Mercruiser Vortec 4.3 0M322285
                    Alpha gen 1

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                    • #11
                      Maybe try a 4 blade 21pith,...

                      Should drop the rpms some, And give you even better holeshot
                      and control,..

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                      • #12
                        Raise 1 hole max ..need a pressure gauge if you go higher...
                        When in doubt,Trim it out!!!
                        Business Owner & Certifed Technician
                        Boats I own & use
                        20ft Javlin w/250 Junkrude
                        17ft Bullet w/200 Merc (SOLD!!)
                        13ft Allison w/150 I-6
                        17ft Hydra-Sport 175GT
                        15ft Allison w/75 Stinger(project)
                        14 x 48 Drifter with 1100SS Merc

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                        • #13
                          i have a 21 pitch on it now at 5800 i want to lower rpm ence the 23 .
                          pressure guage says 31 at wot now so pretty good .
                          only one hole left .

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                          • #14
                            You need to play with hole heights whether raising or lowering the OB till this cond is fully met. Check pics. This is the ideal Sweet OB/Transom height Spot for any combo in which the prop achieves its max thrust.

                            Click image for larger version

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                            Click image for larger version

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                            See if you can try it out. It's a matter of matching outgoing middle hull hardened water flow whichever shape is it to skim right under small upper plate. Once there report max wot rpm achieved.

                            Happy Boating


                            Sea Rider 320, 380 Sibs, 450 Rib, 2 Strokes Tohatsu 5,18 & 30 HP Proud Smokers

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                            • #15
                              Sign up today
                              I'm sorry, but you are sadly mistaken by a long shot. Water flow should be just under the av plate. That's the bottom plate, not the top plate. Look at your first picture, and see the spray coming way out to the side. That engine is mounted way to low and they are losing at least 10% in speed and fuel economy. And the second photo is just wrong.

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