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  1. CrankyGypsy

    Boat Stuff Challenger 180 Ride Plate Extension (anti-porpoise mod)

    Still available until I post otherwise. Please email me directly at if interested.
  2. CrankyGypsy

    SOLD SOLD 2008 SeaDoo Challenger 180

    (All pics taken on October 9, 2021) ***IF THE AD IS UP, THE BOAT IS AVAILABLE FOR SALE*** ***THE BOAT IS LOCATED IN TAMPA, JUST NORTHWEST OF THE AIRPORT*** $13,500 This Sea Doo comes with all the accessories needed to get a family out on the water this weekend! Selling a 2008 Sea-Doo...
  3. CrankyGypsy

    SOLD SOLD SeaDoo Pump & Impeller Tool Set

    $100 - includes shipping to 48 states. These are SBT tools that I used on my 2008 Challenger 180 once before selling the boat. Will work on the 4-stroke pump bearings as well as the impellers for Rotax engines with 215 horsepower or more. Tools are in excellent condition. Also including a...
  4. CrankyGypsy

    Boat Stuff Challenger 180 Ride Plate Extension (anti-porpoise mod)

    $100 plus shipping. This will fit 2005-2009 Challenger 180 with the Rotax engines, std or SE. I addressed the porpoise issue on my 2008 Challenger 180 with this part that I have for sale. It is a ride plate extension that angles down very slightly, effectively helping to keep the nose down...
  5. CrankyGypsy

    Challenger 180 anti-porpoising modification

    Left out of Bayport, FL yesterday for scalloping. Full tank of gas and no more than 700lbs in people and gear. Set the trailing edge of the tabs to about 3/16". Hardware held up under some rough conditions: Heading out, waves were around a moderate chop (marine report calling it 2-3' waves, but...
  6. CrankyGypsy

    Challenger 180 anti-porpoising modification

    @biffdotorg Yup, his was one of the first ones I ran across. I just went back and saw your posts: wow, you guys were running fairly deep trailing edges with them. My original, giant plate was a copy of Mb185cs's on that forum. It isn't adjustable and had a fraction of your depth. I opted to...
  7. CrankyGypsy

    Challenger 180 anti-porpoising modification

    FINAL IMPROVEMENTS: To get a trailing edge that starts level with the running surface of the hull, I took my base pieces to a machinist. I had him square the band saw cuts and then mill an angled surface on the large face of the base that mounts to the hull. This forced me to repair the six...
  8. CrankyGypsy

    Overheating Warning - Temp Sensor Questions

    If you can confirm there is no hose kinking happening or sensor failure with the YDS, take Scott's advice and do my closed-loop flush. Especially since vinegar and Dawn dislodged larger crud - I tried a few of these weaker options, but they did practically nothing to cure my overheat issue. I'd...
  9. CrankyGypsy

    Challenger 180 anti-porpoising modification

    WORK N PROGRESS: the tabs that I fabricated are not exact duplicates of the Sea-Doo tabs (however, see the next post for how I modified these to duplicate the Sea Doos). My tabs are simpler, each made from two pieces of flat bar aluminum that is cut on a bandsaw at approximately 90degrees...
  10. CrankyGypsy

    Challenger 180 anti-porpoising modification

    Been sidetracked a lot, but finally finished the fab on these. I haven’t attached or tested the trim tabs yet, but here is the supply information. METAL: (2x) 6”x6” 10 gauge Stainless Steel 304 2B (2x) 3.75”x0.50”x4” Aluminum 6061 (2x) 6”x0.75”x1.25” Aluminum 6061 STAINLESS HARDWARE: (6x) #14...
  11. CrankyGypsy

    Challenger 180 anti-porpoising modification

    UPDATE: I'm not really happy with the overall results of the large plate that I fabricated. My tests have been on a lake, so I'll probably be less impressed in The Gulf. It does seem to help a little, but I had to remove my Cobra Fins to run the plate. I also don't like that I have to remove the...
  12. CrankyGypsy

    Oil Change on MR-1 (How to perform a Complete Drain)

    these are the ones I bought: Amazon.com: Bolt Motorcycle Hardware (DPWM8.15-10) M8 x 15mm Drain Plug Washer, (Pack of 10): Automotive
  13. CrankyGypsy

    Steering nozzle modification

    I believe you would understand if you could see the relation of the venturi to the nozzle, first hand. As you turn the nozzle, the output of the venturi is directed at this step ...once you hit the steering stop, the step is practically "down stream" of the flow of water. This certainly results...
  14. CrankyGypsy

    Steering nozzle modification

    Hadn't considered that, but it's a fairly beefy part throughout - I can't imagine the steps being necessary for that purpose. Here is a photo I found of one that fits a 2013+ GTR and another pic of a 1995-era nozzle showing that the additional girth was not present, even with a thinner wall...
  15. CrankyGypsy

    Challenger 180 anti-porpoising modification

    (referencing 2008 Sea Doo Challenger 180) (Porpoising C180 - Trim tabs or pump wedge?) (Speedster 200 Trim options - porposing) If you own a 2005-2008 Challenger 180, you know that they come out of the water easily over waves. "Porpoising" forces you to slow down and is a huge nuisance when...
  16. CrankyGypsy

    Steering nozzle modification

    (referencing 2008 Sea Doo Challenger 180) I ran across a post on another forum a while back that I can't currently find. The owner used a piston cylinder honing tool to remove the "steps" inside the steering nozzle. I'm not sure which models of PWC/boats have these steps. It is believed these...
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