Getting a spray pattern out of low jet?

[Quinc]

Tapped the hole in my exhaust for a mikuni low jet and would like to get it to spray into the chamber vs stream. Anyone have any luck notching or doing anything else to get a spray pattern out of it?

@masterblaster

 

[Ducky]

Tapped the hole in my exhaust for a mikuni low jet and would like to get it to spray into the chamber vs stream. Anyone have any luck notching or doing anything else to get a spray pattern out of it?

@masterblaster

Why not use a spray bar?

 

[37]

Carb jets dribble fuel into the carbs. They don't actually spray. If you're looking for a true spray pattern in your exhaust then @The Duckster has the answer.

You might get a jet to spray with enough water pressure and if it's located at the very bottom of your tapped NPT fitting. But, then you risk it backing out and falling into your exhaust.

Spray bar.

 

[DAG]

It'll spray.. just need to run some fuel injector cleaner lol

 

[Quinc]

Easier to drill small holes and fill them back in until I find the sweet spot I am looking for.

 

[Quinc]

check these out:

 

[Harbor]

Well I guess that answers the question. Wouldn't of thought it'd take all that to get a cone shape but their it is. Good find.

Wonder how strong that coil
Is, would want it to break off and go back in the cylinder some how. Very interesting find

 

[Quinc]

They have a bunch of interesting stuff. But smallest I have found so far is 1/8 npt threads.
http://www.i-spraynozzle.com/

 

[Pro-pulsion]

I remember OMC doing something to this effect with their FICHT fuel injection system. They spent years trying to figure out why the injectors were always causing issues. I forget exactly what they did but I know they ended up adding I think a spigot from the center of the injector or a bridge tip like a spark plug to force the spray to fan outward. It corrected the issue of hardware at any rate. Perhaps adding a little spark plug like bridge to the bottom of the jet would help force the water to fan out, maybe make the bridge tip flat and wide like a mini spoon upside down? It would take some patience to get it to bond but silver solder can handle some pretty serious heat and if the jet is going to be used back toward the tail of the pipe then it shouldn't affect the solder at all.

 

[///M5]

They have a bunch of interesting stuff. But smallest I have found so far is 1/8 npt threads.
http://www.i-spraynozzle.com/

How would you mount those? Would you have to screw it in from the inside, or braze it in?

Sent from my SM-G935F using Tapatalk

 

[john zigler]

I have our own Watcon spray bars here, with 1/4, or 3/8 hose barb fitting. Can be tapped for Mikuni Main jet for further restriction/tuning.

I put the 3/8 ones into the pipe stinger end. If you are running a factory pipe blaster chamber, I cut off the stock tube, and tap for 1/8 pipe thread, and install our spray fitting.

https://www.watcon.com/engine/exhaust/water-injection

 

[Quinc]

I have our own Watcon spray bars here, with 1/4, or 3/8 hose barb fitting. Can be tapped for Mikuni Main jet for further restriction/tuning.

I put the 3/8 ones into the pipe stinger end. If you are running a factory pipe blaster chamber, I cut off the stock tube, and tap for 1/8 pipe thread, and install our spray fitting.

https://www.watcon.com/engine/exhaust/water-injection

I am currently running your 1/4 sprayer with mikuni jet. But I am trying something different on this one. Thank you though!

 

[senor]

Tapped the hole in my exhaust for a mikuni low jet and would like to get it to spray into the chamber vs stream. Anyone have any luck notching or doing anything else to get a spray pattern out of it?

@masterblaster

Maybe try one of these. You have to install them backwards. Be sure to use the best filter before the jet. You have to punch the tapered end to seal it off. I've used them as a third circuit in carbs as well.

Tapped the hole in my exhaust for a mikuni low jet and would like to get it to spray into the chamber vs stream. Anyone have any luck notching or doing anything else to get a spray pattern out of it?

@masterblaster

 

[///M5]

View attachment 328110
Maybe try one of these. You have to install them backwards. Be sure to use the best filter before the jet. You have to punch the tapered end to seal it off. I've used them as a third circuit in carbs as well.

Where do you get them and how much are They?

Sent from my SM-G935F using Tapatalk

 

[senor]

Where do you get them and how much are They?

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They are just mikuni pilot jets for VM series carbs. This one has no side holes. Cut an angle at the tip and you are good.

 

[senor]

Tapped the hole in my exhaust for a mikuni low jet and would like to get it to spray into the chamber vs stream. Anyone have any luck notching or doing anything else to get a spray pattern out of it?

@masterblaster

What pipe are you working on?

 

[Quinc]

What pipe are you working on?

Coffman Rocket pipe, I drilled and threaded the stock water injection spot on the chamber and am playing with different jet sizes. Then when I take her to Pismo I will increase or remove the jet so I don't have to worry about sand plugging it up. I also put in a spray nozzle before the coupler on the chamber that I can easily turn on and off depending on the riding I will be doing. More or less it has been a wet winter and I like to tinker.