Questions About Water Methanol Alcohol Injection - Post Them Here
#81
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You said this was 2 years ago? I swear I had multiple discussion with Coolingmist about incorporating the RPM but they said it wasn't yet available. They did say it's coming but I couldn't wait. This was around January of 2008. My second option was Aquamist but I didnt want to spend 1K for it at that time.
#86
#87
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problem with direct port is if something goes wrong (like the pump/solenoid gets stuck open), there's no way to stop meth from flooding your engine. At least in the charge pipe, the TB is closed. It would probably take the moons to align to hit that scenario.....
I would definitely add a manual master on/off switch on a direct port.
I would definitely add a manual master on/off switch on a direct port.
#88
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problem with direct port is if something goes wrong (like the pump/solenoid gets stuck open), there's no way to stop meth from flooding your engine. At least in the charge pipe, the TB is closed. It would probably take the moons to align to hit that scenario.....
I would definitely add a manual master on/off switch on a direct port.
I would definitely add a manual master on/off switch on a direct port.
#89
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What has been your luck with the valve seals?
I had this system on my Z for about a week and the solenoid valves started to leak through. And because the system design tries to keep the plumbing system primed at pressure, it always leaked. Every five minutes the electric pump would turn on for about 1-2 seconds to re-prime the system. And it did this constantly.
I had to remove the system because it got so bad. I didn't even get a chance to tune it because it went out so quickly.![](https://my350z.com/forum/images/smilies/icon22.gif)
Just plain old water/meth....
I had this system on my Z for about a week and the solenoid valves started to leak through. And because the system design tries to keep the plumbing system primed at pressure, it always leaked. Every five minutes the electric pump would turn on for about 1-2 seconds to re-prime the system. And it did this constantly.
I had to remove the system because it got so bad. I didn't even get a chance to tune it because it went out so quickly.
![](https://my350z.com/forum/images/smilies/icon22.gif)
Just plain old water/meth....
#90
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What has been your luck with the valve seals?
I had this system on my Z for about a week and the solenoid valves started to leak through. And because the system design tries to keep the plumbing system primed at pressure, it always leaked. Every five minutes the electric pump would turn on for about 1-2 seconds to re-prime the system. And it did this constantly.
I had to remove the system because it got so bad. I didn't even get a chance to tune it because it went out so quickly.![](https://my350z.com/forum/images/smilies/icon22.gif)
Just plain old water/meth....
I had this system on my Z for about a week and the solenoid valves started to leak through. And because the system design tries to keep the plumbing system primed at pressure, it always leaked. Every five minutes the electric pump would turn on for about 1-2 seconds to re-prime the system. And it did this constantly.
I had to remove the system because it got so bad. I didn't even get a chance to tune it because it went out so quickly.
![](https://my350z.com/forum/images/smilies/icon22.gif)
Just plain old water/meth....
Last edited by ttg35fort; 05-28-2010 at 09:18 AM.
#91
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Terry,
Before you reconnect your system, check the solenoid valves to see if the innards are rusted out. You can unscrew the knurled stainless ring holding the solenoid to the valve body.
I found one of the internal poppets was corroded/rusted by the water meth mix..... this is kind of ridiculous considering that it is supposed to be flowing a water/meth mix.
It was odd because there are two valve poppets per valve body. One poppet was corroded and the other was not. Makes me wonder if they were having QC issues with the poppet material/alloy.
Check your valves to see if they have the same thing.
Before you reconnect your system, check the solenoid valves to see if the innards are rusted out. You can unscrew the knurled stainless ring holding the solenoid to the valve body.
I found one of the internal poppets was corroded/rusted by the water meth mix..... this is kind of ridiculous considering that it is supposed to be flowing a water/meth mix.
It was odd because there are two valve poppets per valve body. One poppet was corroded and the other was not. Makes me wonder if they were having QC issues with the poppet material/alloy.
Check your valves to see if they have the same thing.
#95
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Terry,
Before you reconnect your system, check the solenoid valves to see if the innards are rusted out. You can unscrew the knurled stainless ring holding the solenoid to the valve body.
I found one of the internal poppets was corroded/rusted by the water meth mix..... this is kind of ridiculous considering that it is supposed to be flowing a water/meth mix.
It was odd because there are two valve poppets per valve body. One poppet was corroded and the other was not. Makes me wonder if they were having QC issues with the poppet material/alloy.
Check your valves to see if they have the same thing.
Before you reconnect your system, check the solenoid valves to see if the innards are rusted out. You can unscrew the knurled stainless ring holding the solenoid to the valve body.
I found one of the internal poppets was corroded/rusted by the water meth mix..... this is kind of ridiculous considering that it is supposed to be flowing a water/meth mix.
It was odd because there are two valve poppets per valve body. One poppet was corroded and the other was not. Makes me wonder if they were having QC issues with the poppet material/alloy.
Check your valves to see if they have the same thing.
#96
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marcelz, I tapped the fusebox in the driver's side footwell for the 12v line feeding the injectors (for my 2004 G35) and used that to power the control unit and provide the +12v signal for the injector sensing. This lead gets power slightly later than ignition +12v for example, so it can cause problems during start up like you describe (because the control unit thinks the voltage differential is caused by the injector firing).
Do all your testing with a nozzle taped up to your windshield so you can see that everything is working ok.
Last edited by rcdash; 05-28-2010 at 01:11 PM.
#100
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With respect to the amount of water being injected, the rule of thumb that I have heard is no more than about 15% of the gasoline flow rate.