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2019 scarab nozzle?

Messages
75
Reaction score
9
Points
17
Boat Make
Scarab
Year
2019
Boat Model
195 ID
Boat Length
19
I was told by the guys that make the thrust vectors that I can move my nozzle? As in point it down more??? I'm not around the boat right now does any know if thats true?
 

Luc Lafreniere

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Location
Ottawa, Canada
Boat Make
Scarab
Year
2015
Boat Model
165 G
Boat Length
16
Yes. It can be done. But only by a specific amount unless you buy some special replacement bushing.

Under the nozzle is a bolt that goes through a plastic bushing. This bushing is oval in shape and has an offset hole that is typically set up so the hole is farther back towards the stern. This makes the nozzle point upwards to some degree. You can take out the bolt, take out the bushing, flip it and reinstall. This will point the nozzle down to some degree.

Now, with that being said, if you do this, you will encounter other issues.

1. You now need to re-adjust your bucket position considerably. Now that your nozzle is lower, you need to make the bucket drop farther down.
2. Because you've had to adjust your bucket down, it will no longer latch correctly when it's in full forward position. I'm not sure how to fix that (or if it's possible). The plate the bucket latches to is fixed permanently in a specific spot.
3. The angle of your boat at running speed will change a bit, but it's pretty minor.

I purchased my boat second hand, it came with the nozzle down. I ran it that way for 3 summers not knowing until my bucket finally dropped down once at speed. It caused the boat to submarine dramatically with water going over the boat everywhere. It was pretty scary. That's when I discovered what had happened. I put it back myself and adjusted things. Bucket now latches so that this doesn't happen again. I can't see how you could drop the nozzle and still latch the bucket. It may not cause any issues... but having experienced it, I would vote not to do this.

At the source, are you having problems steering? It took me some time, but I've never felt a need to add extra stuff to help with that. But then again, I have a small boat.
 

Luc Lafreniere

Jet Boat Addict
Staff member
Scarab Forum Lead
Messages
563
Reaction score
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Points
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Location
Ottawa, Canada
Boat Make
Scarab
Year
2015
Boat Model
165 G
Boat Length
16
This is what the busing looks like. You can see the hole is on one side.
 

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Dean P

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Year
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Yes. It can be done. But only by a specific amount unless you buy some special replacement bushing.

Under the nozzle is a bolt that goes through a plastic bushing. This bushing is oval in shape and has an offset hole that is typically set up so the hole is farther back towards the stern. This makes the nozzle point upwards to some degree. You can take out the bolt, take out the bushing, flip it and reinstall. This will point the nozzle down to some degree.

Now, with that being said, if you do this, you will encounter other issues.

1. You now need to re-adjust your bucket position considerably. Now that your nozzle is lower, you need to make the bucket drop farther down.
2. Because you've had to adjust your bucket down, it will no longer latch correctly when it's in full forward position. I'm not sure how to fix that (or if it's possible). The plate the bucket latches to is fixed permanently in a specific spot.
3. The angle of your boat at running speed will change a bit, but it's pretty minor.

I purchased my boat second hand, it came with the nozzle down. I ran it that way for 3 summers not knowing until my bucket finally dropped down once at speed. It caused the boat to submarine dramatically with water going over the boat everywhere. It was pretty scary. That's when I discovered what had happened. I put it back myself and adjusted things. Bucket now latches so that this doesn't happen again. I can't see how you could drop the nozzle and still latch the bucket. It may not cause any issues... but having experienced it, I would vote not to do this.

At the source, are you having problems steering? It took me some time, but I've never felt a need to add extra stuff to help with that. But then again, I have a small boat.
Does this increase top speed or better gas mileage or better steering??? This is interesting. When you switch it back what did you notice?
 

Luc Lafreniere

Jet Boat Addict
Staff member
Scarab Forum Lead
Messages
563
Reaction score
225
Points
102
Location
Ottawa, Canada
Boat Make
Scarab
Year
2015
Boat Model
165 G
Boat Length
16
I noticed almost no effect at all. Which was the interesting part. I expected to lose top speed since the nozzle pointed less horizontally, but nope, no difference. Steering felt the same. As for gas mileage, good question. I haven't measured that so it's pretty hard to tell.

In short, changing the nozzle made zero noticeable difference all around. It did allow the bucket to latch, which was my main goal. But I suspect the difference in angle is too minor to make much of a difference although I am sure there is some difference. It's just too small to notice. It would be even less noticeable on a bigger boat. I'm not even sure why the nozzle was angled low in the first place. Never figured it out.
 

jacoviii

Jet Boat Junkie
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Yamaha
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Pointing the nozzle down could trim the bow down ( might help with porpoising in choppy water) Might help with jet spry while doing water sports. Lower the jet stream during wake surfing.
 

Luc Lafreniere

Jet Boat Addict
Staff member
Scarab Forum Lead
Messages
563
Reaction score
225
Points
102
Location
Ottawa, Canada
Boat Make
Scarab
Year
2015
Boat Model
165 G
Boat Length
16
Pointing the nozzle down could trim the bow down ( might help with porpoising in choppy water) Might help with jet spry while doing water sports. Lower the jet stream during wake surfing.
Yeah, it does not help with porpoising. It should, totally agree! But in practice, it made no difference on the 165 which IS prone to porpoising with both angles of the nozzle. :S I wish it did. lol

You are correct though, it does help with the jet spray a bit. But it didn't make much of a difference there either. Still need a long tow rope to get people out of the spray with both angles.

Can't comment on the wake surfing one. My 165 is too small to attempt that. lol
 
Messages
75
Reaction score
9
Points
17
Boat Make
Scarab
Year
2019
Boat Model
195 ID
Boat Length
19
Yes. It can be done. But only by a specific amount unless you buy some special replacement bushing.

Under the nozzle is a bolt that goes through a plastic bushing. This bushing is oval in shape and has an offset hole that is typically set up so the hole is farther back towards the stern. This makes the nozzle point upwards to some degree. You can take out the bolt, take out the bushing, flip it and reinstall. This will point the nozzle down to some degree.

Now, with that being said, if you do this, you will encounter other issues.

1. You now need to re-adjust your bucket position considerably. Now that your nozzle is lower, you need to make the bucket drop farther down.
2. Because you've had to adjust your bucket down, it will no longer latch correctly when it's in full forward position. I'm not sure how to fix that (or if it's possible). The plate the bucket latches to is fixed permanently in a specific spot.
3. The angle of your boat at running speed will change a bit, but it's pretty minor.

I purchased my boat second hand, it came with the nozzle down. I ran it that way for 3 summers not knowing until my bucket finally dropped down once at speed. It caused the boat to submarine dramatically with water going over the boat everywhere. It was pretty scary. That's when I discovered what had happened. I put it back myself and adjusted things. Bucket now latches so that this doesn't happen again. I can't see how you could drop the nozzle and still latch the bucket. It may not cause any issues... but having experienced it, I would vote not to do this.

At the source, are you having problems steering? It took me some time, but I've never felt a need to add extra stuff to help with that. But then again, I have a small boat.
yes thats what i have in it now. No problems now. was going to put the vectors on to help the wife drive a low speed. when i got the thrust vectors they told me i had to pull that out to make it work. long story short I will not be running thrust vectors. they can cause a lot of problems. with the new boats that have the fly by wire if you hit something and the thrust vector gets in the way of the bucket your fly by wire motor will just kill the cable. this pointed me to looking in to the nozzle.
 
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