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Old 03-02-2008, 02:54 PM   #1 (permalink)
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Default Solenoid or Checkvalve?

My check valve on my system recently failed and ended up filling up my intercooler with fluid, luckily I caught it before anything bad happened. The problem now is I have to replace it and I'm not sure what to replace it with. So I was wondering if you guys could give me a hand. Solenoid or Check valve?
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Old 03-04-2008, 10:04 AM   #2 (permalink)
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Most everyone warrentys there parts for 1 year i would just return it to who ever made it, and stick with a check valve.
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Old 03-05-2008, 02:05 AM   #3 (permalink)
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Quote: Originally Posted by chance@devilsown View Post
Most everyone warrentys there parts for 1 year i would just return it to who ever made it, and stick with a check valve.

It's seeming more and more that I'm reading that check valves are failing... is this a normal thing?

edit: found out the conversion rate....

1" of mercury = 0.49109778psi... so 21" of mercury = 10.31305338psi... which is still less than 16psi cracking pressure on the CV.

Last edited by eviilboy : 03-05-2008 at 02:40 AM.
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Old 03-05-2008, 09:55 AM   #4 (permalink)
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mine failed 2 yrs ago and ive been runnign without one for that long. I remember when i had th checkvalve that my system would barely work and now without it spray's like niagara falls lol. I now get No KR at all without it. I get Some water in my intercooler if my car sits longer then 4 -7days. When i start the car i drive it and it bogs for like 2-3 seconds and it goes away. Odd thou cause my pump is mounted below my tank.
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Old 03-05-2008, 01:17 PM   #5 (permalink)
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Quote: Originally Posted by Turbolag87 View Post
mine failed 2 yrs ago and ive been runnign without one for that long. I remember when i had th checkvalve that my system would barely work and now without it spray's like niagara falls lol. I now get No KR at all without it. I get Some water in my intercooler if my car sits longer then 4 -7days. When i start the car i drive it and it bogs for like 2-3 seconds and it goes away. Odd thou cause my pump is mounted below my tank.

hmm... chances are my tank and pump will be mounted side by side.. evenly...

So the inlet on the pump from the tank will be higher than the tap on the tank...

Chance, will this cause any problems?
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Old 03-05-2008, 03:29 PM   #6 (permalink)
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You going to see more post about x having a problem when there is more x out there. We have very few people that have problems with them. If we had people have problems we would change the part.

No, its not going to cause any problems mounting it that way.
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Old 03-05-2008, 04:47 PM   #7 (permalink)
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Quote: Originally Posted by chance@devilsown View Post
You going to see more post about x having a problem when there is more x out there. We have very few people that have problems with them. If we had people have problems we would change the part.

No, its not going to cause any problems mounting it that way.

sweet, thank you.
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Old 03-06-2008, 02:23 PM   #8 (permalink)
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Quote: Originally Posted by Turbolag87 View Post
mine failed 2 yrs ago and ive been runnign without one for that long. I remember when i had th checkvalve that my system would barely work and now without it spray's like niagara falls lol. I now get No KR at all without it. I get Some water in my intercooler if my car sits longer then 4 -7days. When i start the car i drive it and it bogs for like 2-3 seconds and it goes away. Odd thou cause my pump is mounted below my tank.

If the system is primed with water, what matters is the water level elevation (in the tank) in relation to the injector. If there is nothing to stop flow, you will have a siphon effect which will continue to drain the tank as long at the water level is above the injector. To prevent this you would have to mount the tank below the injector; but that's nearly impossible since our charge pipe sits so low.

This is the thing that freaks me about these W/I setups; starting the car one day and hydrolocking the motor.

Wouldn't a solenoind also have a chance of developing a leak just like a check valve?
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Old 03-06-2008, 02:31 PM   #9 (permalink)
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Quote: Originally Posted by T U N E ! View Post
If the system is primed with water, what matters is the water level elevation (in the tank) in relation to the injector. If there is nothing to stop flow, you will have a siphon effect which will continue to drain the tank as long at the water level is above the injector. To prevent this you would have to mount the tank below the injector; but that's nearly impossible since our charge pipe sits so low.

This is the thing that freaks me about these W/I setups; starting the car one day and hydrolocking the motor.

Wouldn't a solenoind also have a chance of developing a leak just like a check valve?

Let me tell you that it takes ALOT of water to hydrolock this engine. Heck this morning i went out and started my car and it was bogging away with white smoke coming out of the tailpipe (man my intake and combustion chamber in this car must be spotless and shiny lol) and Finally after it all cleared up i check the tank to see how much water had gone into my IC and let me tell you that at least 2 liters and it wasnt even close to hydrolocking. Oddly enough it doesnt do it all the times if the car is sitting. Maybe I'll try parking my car uphill (ass facing up) and see if it works better.


Anyone know where i can get a Low PSI checkvalve? Judging from my past experience with CV, im not too sure i want to run one as my pressure just gets killed at the Nozzle. The before and after results were just crazy on how much more the spray pattern opens up without the valve.
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Old 03-06-2008, 06:35 PM   #10 (permalink)
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Quote: Originally Posted by Turbolag87 View Post
Let me tell you that it takes ALOT of water to hydrolock this engine. Heck this morning i went out and started my car and it was bogging away with white smoke coming out of the tailpipe (man my intake and combustion chamber in this car must be spotless and shiny lol) and Finally after it all cleared up i check the tank to see how much water had gone into my IC and let me tell you that at least 2 liters and it wasnt even close to hydrolocking. Oddly enough it doesnt do it all the times if the car is sitting. Maybe I'll try parking my car uphill (ass facing up) and see if it works better.


Anyone know where i can get a Low PSI checkvalve? Judging from my past experience with CV, im not too sure i want to run one as my pressure just gets killed at the Nozzle. The before and after results were just crazy on how much more the spray pattern opens up without the valve.

2 liters? Geez that's a lot of water. That kind of eases some of my fear.

Are you running a trunk-mounted tank with the injector in the charge pipe? In that case you should park with the ass facing downhill.
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Old 03-06-2008, 08:55 PM   #11 (permalink)
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Quote: Originally Posted by T U N E ! View Post
2 liters? Geez that's a lot of water. That kind of eases some of my fear.

Are you running a trunk-mounted tank with the injector in the charge pipe? In that case you should park with the ass facing downhill.

no its mounted ontop of my ECU underneath my hood and yes the injector is 3" below my AIT sensor
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Old 03-07-2008, 02:01 PM   #12 (permalink)
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I went with the solenoid
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Old 03-07-2008, 06:03 PM   #13 (permalink)
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Quote: Originally Posted by chance@devilsown View Post
Most everyone warrentys there parts for 1 year i would just return it to who ever made it, and stick with a check valve.

Unfortunately my system is 2 years old. So I just ordered a new checkvalve from you! Thanks.
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Old 03-08-2008, 08:20 AM   #14 (permalink)
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Personally, I prefer not asking myself the "CV VS solenoid" question and simply use the two: I have a CoolingMist kit with a checkvalve and I will add a boost switch activated solenoid just before the injectors to completely stop the water flow. I set the switch at the minimum boost setting of the progressive controller, so it'll activate when needed.

I may even go further and use solenoids directly screwed at the injectors to completely cut water flow when not in boost. This way, I would avoid having a little bit of fluid dripping in the cold side pipe when the system is not injecting.
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