Z1500
Jet Boat Lover
- Messages
- 22
- Reaction score
- 11
- Points
- 77
- Location
- Gilbert AZ
- Boat Make
- Yamaha
- Year
- 2019
- Boat Model
- AR
- Boat Length
- 24
I have a very deep sickness for modifying the crap out of everything I own. It is honestly a problem. Bought a new 2019 AR240 last year and I just have it stuck in my head that I need another 10+mph on top end. I just can't get it out of my head, even though I know I should. A little critical background on me is I work at a company that builds turbo kits and turbo upgrades for crazy fast street cars and diesel trucks. I tune them, I've been tuning EFI systems for 20+yrs. I have the ability to reflash the Yamaha ECU's too. I do have the exact know how to make any HP I want out of these engines, that's pretty easy to me. But what I don't know is how the hull will react to say a 50% increase in power. What actual real world top speed gains would I get from 270hp per engine? Is their a rule of thumb to how much power% increase it takes in a boat to gain x% MPH?
So here is the test I'm thinking about conducting before I waste a bunch of my time turbocharging these engines. I could get some impellers done with much steeper pitch. Then add a nitrous kit with all the right safety timing retard, added fuel flow and high octane fuel. Jet each engine for an 80hp shot. Take the boat out and see what my new top speed is. If that confirms that adding the power is worth while I could rig the turbos up on a switch or something such, so I could make it so the boat is exactly like stock 0-40mph then the turbos only kick in then. I don't really need the boat to be chugging fuel ALL the time.
Does anyone know if this is a huge waste of time? I look at what the jet ski guys get out of these engines and it's unreal.
So here is the test I'm thinking about conducting before I waste a bunch of my time turbocharging these engines. I could get some impellers done with much steeper pitch. Then add a nitrous kit with all the right safety timing retard, added fuel flow and high octane fuel. Jet each engine for an 80hp shot. Take the boat out and see what my new top speed is. If that confirms that adding the power is worth while I could rig the turbos up on a switch or something such, so I could make it so the boat is exactly like stock 0-40mph then the turbos only kick in then. I don't really need the boat to be chugging fuel ALL the time.
Does anyone know if this is a huge waste of time? I look at what the jet ski guys get out of these engines and it's unreal.
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