SoCal Jet Boats

Tech Talk => Jet Pumps => Topic started by: 69kona on July 02, 2016, 06:20:00 AM

Title: A/T jet trim nozzle insert ? Help
Post by: 69kona on July 02, 2016, 06:20:00 AM
Right know I have 3.250 nozzle insert.
Would I benefit from going smaller in nozzle size to achieve more mph ?

I do have a little horsepower probably 650 or more on the bottle ...
I'm thinking a 3.125 or so? Any input would be much appreciated !


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Title: Re: A/T jet trim nozzle insert ? Help
Post by: 69kona on July 02, 2016, 09:13:41 AM
Is it worth going to smaller nozzle?


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Title: Re: A/T jet trim nozzle insert ? Help
Post by: damfoo on July 02, 2016, 10:14:53 AM
it's certainly worth a try, especially if you can borrow an insert to see/verify. That being said, you may not necessarily notice the additional speed if any by seat of the pants. It might show up on a gps if your lucky. Typically insert changes are registered at the track in et. benefits. Are your AT nozzels dimensions specific to AT only or will they interchange with others? Are they larger OD than place diverters?
Title: Re: A/T jet trim nozzle insert ? Help
Post by: 69kona on July 02, 2016, 04:45:19 PM

it's certainly worth a try, especially if you can borrow an insert to see/verify. That being said, you may not necessarily notice the additional speed if any by seat of the pants. It might show up on a gps if your lucky. Typically insert changes are registered at the track in et. benefits. Are your AT nozzels
dimensions specific to AT only or will they interchange with others? Are they larger OD than place diverters?
Yeah there larger OD than place diverter
I found 3-1/16 nozzle insert for 53 bucks ...


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Title: Re: A/T jet trim nozzle insert ? Help
Post by: 69kona on July 02, 2016, 06:36:23 PM
So are nozzle sizes worth changing?


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Title: Re: A/T jet trim nozzle insert ? Help
Post by: GT Jets on July 02, 2016, 08:10:29 PM
So are nozzle sizes worth changing?


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Too many things to factor in to be able to answer.

Rule of thumb;

The lighter the boat,  the tighter the nozzle.
Title: Re: A/T jet trim nozzle insert ? Help
Post by: 69kona on July 02, 2016, 08:16:08 PM

Too many things to factor in to be able to answer.

Rule of thumb;

The lighter the boat,  the tighter the nozzle.
Ok I'm gonna give it a shot......ill gps before and after ... Thanks Gt ...


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Title: Re: A/T jet trim nozzle insert ? Help
Post by: FordLover on January 24, 2017, 07:37:48 PM
Ok I'm gonna give it a shot......ill gps before and after ... Thanks Gt ...


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How did this turn out?

If you have a place diverter, is there the standard nozzle insert in there? I read you have to have the diverter machined so I figure its in there somewhere?
Thanks

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Title: Re: A/T jet trim nozzle insert ? Help
Post by: 69kona on January 24, 2017, 08:40:40 PM
It's a American turbine diverter.. Nozzle came out bitchin... Just alittle lathe time lol


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Title: Re: A/T jet trim nozzle insert ? Help
Post by: 69kona on January 24, 2017, 08:41:38 PM
I ended up machining my own insert


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Title: Re: A/T jet trim nozzle insert ? Help
Post by: FordLover on January 25, 2017, 04:39:58 AM
I ended up machining my own insert


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What size did you end up with? What performance gain did you see out of it?

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Title: Re: A/T jet trim nozzle insert ? Help
Post by: 69kona on January 25, 2017, 06:58:20 PM
3.095 might need to go a little bigger.


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Title: Re: A/T jet trim nozzle insert ? Help
Post by: FordLover on January 25, 2017, 07:00:03 PM
3.095 might need to go a little bigger.


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And performance gains?

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