Help with Riva/ Factory Chamber

jetskiking

jetskiking

Im done sanding!!!
Location
Dallas Georgia
Need some info about this chamber? What is it? Is it a wet or dry pipe? I originally thought it was a dry And used the manifold on my type 4 but it dosnt appear to be fully jacketed and I thought I read somewhere it was a wet pipe. The previos owner said it was cracked in the waterjacket and was getting water in the Chamber but if its a wet pipe shouldnt that Happen? Im just trying to make sure. Im wanting to get rid of the chamber but dont want to misrepresent it to anybody. I dont know anything about this chamber
 

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Big Kahuna

Big Kahuna

Administrator
Location
Tuscaloosa, AL
it is a wet pipe, if it is cracked, then it no good, you only want a controlled amount of water to enter the pipe to control the "Tuning", not an uncontrolled amount.
 
Big Kahuna

Big Kahuna

Administrator
Location
Tuscaloosa, AL
you need to hook a waterline to one of the fittings, block the others, go from there............ it is a decent pipe, not as good as a B Pipe, but better than others.
 
K

Keith

Landlocked
Location
Nebraska
You could pressurize the waterjacket with air and see if it leaks. If the leak is on the inside it could be very difficult to locate.
 
botizzle

botizzle

drillin like a villian
Location
Lake Lanier / LKN
I am confused...can someone explain why that pipe is considered a wet pipe? I have that same pipe. I can not find any place on the pipe where water enters the chamber besides the stinger. And there are not any adjustment screws like a normal wet pipe... I run water injection on mine, and as far as I know that is the only place water enters the chamber. I have heard it called a wet pipe several times, I just dont understand why?? I also have a type 4 on another ski and I have compared the two, besides the size difference, and the Riva only having a partial water jacket, the designs are similar.
 
K

Keith

Landlocked
Location
Nebraska
botizzle said:
Ya I know, but where does the water enter the chamber?
Click to expand...

I have never been able to see one up close but from the looks of it the only place the water enters the chamber is at the stinger. So technically there is no water in the chamber and it is considered a dry pipe.
 
Big Kahuna

Big Kahuna

Administrator
Location
Tuscaloosa, AL
from the collar (Part that mates with the manifold) up to the weld is the waterjacket, there should be a fitting up top, and I think one at the bottom also, if you were to unscrew the fitting, under it is a Carb type jet, you can change your tuning by changing the jet size............
 
botizzle

botizzle

drillin like a villian
Location
Lake Lanier / LKN
Big Kahuna said:
from the collar (Part that mates with the manifold) up to the weld is the waterjacket, there should be a fitting up top, and I think one at the bottom also, if you were to unscrew the fitting, under it is a Carb type jet, you can change your tuning by changing the jet size............
Click to expand...


Yup, you are right as usual....but it just has a small pin hole aprox .06 dia drilled into the chamber, not a jet. I obviously didnt see it before.... soooo, now the question is, if I drill it out bigger will it help out on bottom end?
 
Watty

Watty

Random Performance
Location
Australia
I know this may be a little off topic, but it may help others also. Does anyone have any jetting specs for this pipe, and what kind of RPM's it should pull?

I've had a good hunt around but haven't found any info on it. I understand it's getting a little long in the tooth. BigK, any ideas?
 
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