The exhaust on jet skis have water nozzles to lower temps in engine compartments. The water will also muffle the sound and affect power. A carb jet can be used in brass fitting.
Try removing your vent tube on the gas tank. Just unplug it for a test run. The motor can demand more gas then what the vent can handle starving the carb for more fuel. All my machines have the tube deleted.
I subscribed. If you are reading this, you should too. It looks good. I was going to comment that a tach would be your best friend.... then I saw the wire at 6:30, 6000 rpm should be plenty 🤔. Boat moves along. A 420 would be interesting.
why not just do a built 212 if speed is what you want but i honestly advise against it in that little boat its meant to run in calm water like in a pond or lake also that aluminum hull wont handle taking hits very well you can also play around with smaller props so your not straining the motor so hard constantly over loading a small engine will cause it fail prematurely and your failure point will be either compression loss causing hard starting smoking and plugs fouling or the motor heats up to the point of seizing heat induced seizes generally cant be undone an even in the rare times you get one unseized the cylinder is usually done and cant be repaired
You need to either run the test in both directions and average, or just see how fast your drift is and deduct that from your speed. it looks like you have at least a 3mph current.
you are smoking that clutch you need to reduce the gear ratio let that engine take some rpm, these 212s don't make much power at engagement speed, that is not 6000 rpm your rpm gauge is set at 4 stroke mode but these spark at every revolution making it read twice of what it actually is. you are choking that engine making it work so hard and burning your clutch up. you could try a torque converter it looks like you have plenty of room for it
Can also buy and build we run them on racing carts me and a buddy just got don't building a 20+hp 225cc a 263cc would be 30+ done right which would ripppp on that boat
Bear: "I demand you let me in the boat!" 🤣
The exhaust on jet skis have water nozzles to lower temps in engine compartments. The water will also muffle the sound and affect power. A carb jet can be used in brass fitting.
i made a custom water box
Love the idea of boat light enough to be hauled up the bank by one guy and can get up the creek with a little speed
Try removing your vent tube on the gas tank. Just unplug it for a test run. The motor can demand more gas then what the vent can handle starving the carb for more fuel. All my machines have the tube deleted.
Have you read you plug and tune the carb
Could be leaving some on the table
I subscribed. If you are reading this, you should too. It looks good. I was going to comment that a tach would be your best friend.... then I saw the wire at 6:30, 6000 rpm should be plenty 🤔. Boat moves along. A 420 would be interesting.
@@TSRGarage I think my next build will be a 420
I need a a gear for my pump shaft. I cant find anything that even comes close to working. Where did you get yours?
@@thatguyfishingben4794 Amazon.
Not sure exactly what is done but upgraded valve springs and a billet flywheel might make a decent difference
@@maintenancemonkeys8239 I did billet flywheel, rod, 26 lb valve spring
What model and year ski did the pump come from? Freaking sweet dude
1989 Yamaha 500
Are you still working on this project, and are more videos in the works? Very curious
@@xXmrhockey10Xx yes doing more engine mods
Where did you get the jet drive from, and what would be the costs of the jet drive itself? (and up to how many HP is the jet drive rated for?)
@@Jahee-Official it’s a Yamaha 500 jet pump. Rated for 50 hp
Looks like a stand up jet ski head to me.
@@midwesthobbies Thanks for the info! I'll start browsing e-bay.
Upgrade to a 24 mm nibbi carb and 26 lb valve springs.
I upgraded to 22MM carb and 26 lb springs
Put smaller sprocket on the propeller side
What jet pump are you using and how did you mount the pulley on the end of it?
@@adamlines6368 Yamaha 500, tap and drill pulley
I'm thinking 125 yamaha 2 stroke
why not just do a built 212 if speed is what you want but i honestly advise against it in that little boat its meant to run in calm water like in a pond or lake also that aluminum hull wont handle taking hits very well you can also play around with smaller props
so your not straining the motor so hard constantly over loading a small engine will cause it fail prematurely and your failure point will be either compression loss causing hard starting
smoking and plugs fouling or
the motor heats up to the point of seizing heat induced seizes generally cant be undone an even in the rare times you get one unseized the cylinder is usually done and cant be repaired
You need to either run the test in both directions and average, or just see how fast your drift is and deduct that from your speed. it looks like you have at least a 3mph current.
@@dwcheshire thanks I will do that
Seems plenty fast for your river!
18 MPH after changing gearing
you are smoking that clutch you need to reduce the gear ratio let that engine take some rpm, these 212s don't make much power at engagement speed, that is not 6000 rpm your rpm gauge is set at 4 stroke mode but these spark at every revolution making it read twice of what it actually is. you are choking that engine making it work so hard and burning your clutch up. you could try a torque converter it looks like you have plenty of room for it
Let's see a Tillotson 3inch 263cc motor
Can also buy and build we run them on racing carts me and a buddy just got don't building a 20+hp 225cc a 263cc would be 30+ done right which would ripppp on that boat
Add an electric turbo
Would you just let the dog ride in the boat already?😂