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Thread: No power
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07-24-2021, 12:36 PM #11
With your fuel pump having gone out, I think a quick replacement of fuel filter and a pressure check on the fuel rails. Maybe, injector issues.
Currently boatless2020 SA 450 Wife calls it White Cloud. Said it makes her feel "Classy"
2017 Sanger V215sx. We call it Viagra because it's the little blue pill that gets everyone up (Sold)
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07-24-2021, 12:52 PM #12Junior Member
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Probably 700 lbs of adults and 600 lbs of kids. 300 lbs lead in port rear locker and 200 in starboard locker. 100% fill in both rear bags and 70% up front. Little kids were in the bow then came back to the main sitting area. The 12.5" prop is a stump puller and a 450 raptor pushing it should have no issues IMO
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07-24-2021, 01:07 PM #13
I would add plugs and compression check, air intake and vacuum check.
After all of that, since you aren’t getting any sensor faults, I wouldn’t worry about CAT failure and start looking at friction in the drive train. Impinging shaft seal/bearing, tranny bearings/gears etc.
I think someone in the forum recently had to replace their trans in a pre-19 SA/SL and got the 1:1.76 installed.
Currently boatless2020 SA 450 Wife calls it White Cloud. Said it makes her feel "Classy"
2017 Sanger V215sx. We call it Viagra because it's the little blue pill that gets everyone up (Sold)
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07-24-2021, 01:44 PM #14
No power
I had an 18SA running that 2775 prop with a 400, for reference the 400 and 440 are only 23 ft lbs difference.
You are at appx 1800# of added ballast and probably closer to 2000# if you got a cooler, bags, anchor etc.
Boat is 5300
Ballast is 3200 in a 17?
Added ballast and gear 2000
And at 2200 elevation is robbing some power
Boat is at 10500 and I think your boat is max rated at around 11000.
If you have pulled this weight no problem before, then disregard.
But a couple things to consider.
My 18 required some added bow weight to be happy (150#) and 350# mid ship, none in rear lockers.
My guess is move some weight to bow and your stern may be too far slammed. What is your pitch at when not getting to surf speed?
Sent from my iPhone using Tapatalk loo2021 Supra SA 400
2018 Supra SA 400 (SOLD)
Michigan
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07-24-2021, 02:06 PM #15
At 2200 feet, you are down appx 6.6% power as compared to sea level.
Plus you will be down more if you factor in actual density altitude.
Sent from my iPhone using Tapatalk2021 Supra SA 400
2018 Supra SA 400 (SOLD)
Michigan
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07-25-2021, 10:46 AM #16
At <2500 ft, you’re less likely to experience any meaningful cavitation losses, even at higher RPM.
Are you using Marina fuel, or are you fueling on a land based station? You may be getting less performance from fuel contamination, but I’d think that you’d have more noticeable signals from engine sounds.
Currently boatless2020 SA 450 Wife calls it White Cloud. Said it makes her feel "Classy"
2017 Sanger V215sx. We call it Viagra because it's the little blue pill that gets everyone up (Sold)
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07-25-2021, 01:14 PM #17Junior Member
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Looking into this a bit more I pulled the starboard Cat yesterday and it's clean. I then replaced the fuel filter to make sure. Once on the water I filled to 100% both rear lockers and about 65% in the front. I have an additional 500 lbs of lead right in the rear and 1500lbs of passengers. I just noticed that the rear plug and plays are 750's so I don't know how much weight above stock that is. Any info appreciated. Anyway, dropped rear ballasts to 60% yesterday and everything seemed fine. Has anyone loaded their boat this way without power problems? Could be chasing my tail here. Also put 40 gallons of 91 fuel as 87 was in there before. I'll continue from here with Boostane to ensure 89 octane.
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07-25-2021, 04:10 PM #18
Just to clarify,
You have pulled full ballast, plus your lead plus your crew before no problem at surf speed at the elevation you are at?
Sent from my iPhone using Tapatalk2021 Supra SA 400
2018 Supra SA 400 (SOLD)
Michigan
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07-25-2021, 09:03 PM #19Junior Member
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I have never yet pulled full ballast with people at this elevation and been successful at this elevation. I'm suspecting that full ballasts is just too much even with a 15x12.5 prop. I texted the previous owner and it sounds like at full ballasts with a couple people in the boat he may have had the same issue. It would be nice if another SA owner could validate the same issue with the 750lb plug and plays in the rear locker. I might be chasing a rainbow here. Not sure. Could be there's nothing wrong.
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07-25-2021, 09:12 PM #202020 SA 450 Wife calls it White Cloud. Said it makes her feel "Classy"
2017 Sanger V215sx. We call it Viagra because it's the little blue pill that gets everyone up (Sold)