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What is the Difference Between Wet, and Dry

 
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Bocephus027
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Joined: 27 Mar 2006
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1972 Ford Mustang

PostPosted: Mon Sep 11, 2006 7:00 pm    Post subject: What is the Difference Between Wet, and Dry Reply with quote

I see kits advertised as a wet shot, or a dry shot, what is the difference?

Also what is a fogger system?
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GrandSportC3
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1968 Chevrolet Corvette

PostPosted: Mon Sep 11, 2006 7:24 pm    Post subject: Re: What is the Difference Between Wet, and Dry Reply with quote

Bocephus027 wrote:
I see kits advertised as a wet shot, or a dry shot, what is the difference?

Also what is a fogger system?


Carburated applications = wet
Fuel Injected applications = dry

The wet kit mixes a mix of nitrous and fuel and sprays it into your intake (in additon to what the carb already delivers)
The dry shot only adds nitrous and the electric fuel injection automatically adjusts the amount of fuel needed to burn the nitrous.
Fuel injections are controlled by air/fuel ratio and when the computer notices that the mixture is getting leaner (due to the nitrous) it automatically adds more fuel so that the A/F stays at the correct level..

That's at least the way that I understand it.. I'm not a fuel injection expert..
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10sec.et
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1969 Oldsmobile Cutlass

PostPosted: Mon Sep 11, 2006 11:04 pm    Post subject: Re: What is the Difference Between Wet, and Dry Reply with quote

GrandSportC3 wrote:
Bocephus027 wrote:
I see kits advertised as a wet shot, or a dry shot, what is the difference?

Also what is a fogger system?


Carburated applications = wet
Fuel Injected applications = dry

The wet kit mixes a mix of nitrous and fuel and sprays it into your intake (in additon to what the carb already delivers)
The dry shot only adds nitrous and the electric fuel injection automatically adjusts the amount of fuel needed to burn the nitrous.
Fuel injections are controlled by air/fuel ratio and when the computer notices that the mixture is getting leaner (due to the nitrous) it automatically adds more fuel so that the A/F stays at the correct level..

That's at least the way that I understand it.. I'm not a fuel injection expert..


that pretty much sums up the differences between "wet" and "dry" . the fogger system has a nozzle for each cylinder that is plumbed into the intake runners. these nozzles mix the nitrous and fuel together and spray it into the intake runner just ahead of the intake valve. Dave should be along soon to explain this in better detail than i can Smile

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It seems we can look at our magical Balls and come up with a fix?

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clay
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PostPosted: Tue Sep 12, 2006 7:00 pm    Post subject: Reply with quote

All above is correct, the only thing I can add is the foggers are better reserved for larger horsepower kits. They have better cylinder to cylinder distribution than a plate system, but at lower horsepower settings, the fuel jets start getting pretty small and are more prone to getting stopped up. For instance, on a 200 h.p. shot, you share this with 8 jets that are flowing about 25 h.p. worth of fuel and nitrous each and this makes for a pretty small fuel jet. On the "dry" systems, some use a regulator in between a safety solenoid and the main solenoid to reference the pressure regualtor and increase fuel pressure to get the extra fuel. I do believe that some also act like GrandsportC3 said. Clay
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96capriceMGR
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1996 Chevrolet Caprice

PostPosted: Tue Sep 12, 2006 7:20 pm    Post subject: Reply with quote

Few factory injection systems are wideband to the best of my knowledge ALL dry kits for otherwise stock systems handle enrichment through SIGNIFIGANT fuel pressure increases to make the injectors act much larger. It is possible with aftermarket injection to have the computer add the fuel, but on stock management vehicles the pressure increase means the fuel is delivered completely independant of the pcms control.

Injected cars can run wet kit too, plates or single nozzles.
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Paul P
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1971 Chevrolet Chevelle

PostPosted: Tue Sep 12, 2006 8:18 pm    Post subject: Reply with quote

Wet is can inverted whip cream and nitrous is going in your mouth.
Dry is can upright with no whip cream just nitrous.
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10sec.et
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1969 Oldsmobile Cutlass

PostPosted: Tue Sep 12, 2006 10:25 pm    Post subject: Reply with quote

Paul P wrote:
Wet is can inverted whip cream and nitrous is going in your mouth.
Dry is can upright with no whip cream just nitrous.


hey,hey.... this is a family show!! Shocked

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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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af2
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Location: grassvalley, ca
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1933 Willys Coupe

PostPosted: Tue Sep 12, 2006 10:33 pm    Post subject: Reply with quote

10sec.et wrote:
Paul P wrote:
Wet is can inverted whip cream and nitrous is going in your mouth.
Dry is can upright with no whip cream just nitrous.


hey,hey.... this is a family show!! Shocked


Without the kids! Idea Grandma! Embarassed
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