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nos question
5K views 31 replies 10 participants last post by  Squirtcha?  
#1 ·
I have a old 1/4 stringer Tahiti runnin about 350 to 400 hp BBC, thinkin about putin in a 150 to 200 shot of spray. I know I should not run more then about 500 hp in the boat but will I be risking stringer problems with more then 500 hp on the spray?
 
#2 ·
If the stringers are solid you should be fine. I would be more concerned with running a boat with 1/4 stringers in big water, let alone with soggy 1/4 stringers in big water.
 
#8 ·
Ditto to what Dan wrote. A 100-125 shot should be pretty easy on the engine. My first Nos system was a 125-150 shot it never hurt anything.

Sleeper CP :D
 
#5 · (Edited)
When I ran a 100 hp shot it was good for 6 mph. That's a pretty good gain in jetboat land. Also very safe. Almost impossible to blow anything up. No fancy timing controls required etc.

Only running a 150 now. Still no timing controls, and pretty darned safe. The 150 is good for 7-8 mph consistently.

7-8 mph gain for approximately $400 is a pretty good investment/upgrade in my book. Not too many other things that would net you the same gain for that amount of money.

The only down side is laying down $60+ every time you need to fill a bottle.
 
#7 ·
I had a family member give me a complete pro shot fogger system that I will be putting on the boat this summer, As this kit was going to go into a car I recived the bottel blanket and heater. I'm sure the heater is not needed how about the blanket? Does it help with temp, or just throw a wet towel on there if needed. If not needed I will be selling these, let me know if someone wants them. Thanks for the info.
 
#9 ·
I had a family member give me a complete pro shot fogger system that I will be putting on the boat this summer, As this kit was going to go into a car I recived the bottel blanket and heater. I'm sure the heater is not needed how about the blanket? Does it help with temp, or just throw a wet towel on there if needed. If not needed I will be selling these, let me know if someone wants them. Thanks for the info.
I'm was wondering that also, I would mount the bottle under the bow on a river boat, outa the sun.
 
#21 ·
I'm gonna run both, in series to the solenoids. That way even if I hit the steering wheel button, it won't activate unless the WOT switch is triggered, and if I let off the throttle and still have the button pushed, it'll shut off the n20 when the WOT switch isn't triggered anymore.
 
#32 ·
Wet.

When it was a 100 hp system a single plate.

Now with the 150 system it's dual plates on a tunnelram.

I don't know anybody that's running a dry system on a boat. It kinda needs to be fuel injected to be running a dry system.

Dry
In a dry nitrous system, extra fuel required is introduced through the fuel injectors, keeping the manifold dry of fuel. This property is what gives the dry system its name. Fuel flow can be increased either by increasing the pressure in the fuel injection system, or by modifying the vehicle's computer to increase the time the fuel injectors remain open during the engine cycle. This is typically done by spraying nitrous past the mass airflow sensor (MAF), which then sends a signal to the vehicle's computer telling it that it sees colder denser air, and that more fuel is needed. This is typically not an exact method of adding fuel. Once additional fuel has been introduced, it can burn with the extra oxygen provided by the nitrous, providing additional power.