Wrong Aplication for Solenoid Valve or Product Problem

first/thridgen · 06-27-2008

I have been running a single solenoid with a progresive controler and rpm switch on a NA aplication for some time with no product problems but poor performance.

The performance problem is as rpm rises need more alk/ water.
Also there is no lag time with NA engines - mash the throttle you need instant injection - almost a alk/water acelerator pump shot is needed.

Solution - added two rpm swithes and 2 solenoid valves 2 nozzels trigggered at 1800rpm and 3600 rpm

Also added a push button, solenoid valve and relay to inject a shot before mashing the pedal.

It works well on the car acording to the wide band and lack of detonation.

But when bench tested the non triggered solenoid valves leak by when the pump runs and only one stage is activated.

Is this normal? Was the solenoid valve made only to hold back vacum not to isolate stages from a running pump?

Also what direction is the valve to be installed?

I have not taken one of these valves apart but from other valves I have taken apart there is a peferred direction for flow as pertaining to needle seat arangement, and for assistaning sealing under pressure oposed to lifiting the needle off it seat.

A side note the " new revised check valve" that you sent me seems to work fine on the bench but I have not run it on the car. I am glad to see you are continually improving your products.

dvldoc · 06-28-2008

The valves are not designed to hold back the pump when running, IF your using under a 3gph nozzle the pressure can be as high as 200 psi at the nozzle tip or at the solenoid.

Quote:

12v solenoid to prevent siphoning under vacuum, or if your tank is mounted high than the nozzle.

The valve in our set up is to be used in conjunction with the pump which means when the pump is on the solenoid valve is open.

The valve should have a marked in and out on it.

There are other solenoids out there that hold much higher pressure but cost much more and not all are methanol compatible, Nitrous solenoids will work for a while but tend to go bad after a few months due to the methanol.

I would just be running a 1 bar map sensor powered by the voltage faced controller, We have others with that same set up with no problems.

first/thridgen · 06-28-2008

Thanks for the help.

I am already running your pro. con. off the map sensor. It works well for the vaccum side of it. Other then I would rather see a start duty cycle of 50% instead of 15% for my aplication thou.

I have a very radical engine (260psi cranking pressure) 50/50 water meth on top of the stock fuel table will not stop the detonnation when running 87 octane fuel.

I run a minus 15% in the power enrichment table thus giving me about a 50%/50% mix of 87octane gasoline and straight methanol in the mid rpm range. This is why I need stages triggered by rpm.

I had great luck today by orienting the valve direction, lower the pump presure switch setting as low as it would go (130psi) dead headed, and rewiring the solinoids that when the pump is on it always has at least one path for fuel flow wich lowered line pressure to around 100psi.

The valves are isolating fine at this pressure even if they were never designed for it. I had them backwards in the begining.

06-27-2008	#1 (permalink)
first/thridgen Water Injection Year: 1968 Make: Chevy Model: Camaro Join Date: Dec 2006 Posts: 27	Wrong Aplication for Solenoid Valve or Product Problem I have been running a single solenoid with a progresive controler and rpm switch on a NA aplication for some time with no product problems but poor performance. The performance problem is as rpm rises need more alk/ water. Also there is no lag time with NA engines - mash the throttle you need instant injection - almost a alk/water acelerator pump shot is needed. Solution - added two rpm swithes and 2 solenoid valves 2 nozzels trigggered at 1800rpm and 3600 rpm Also added a push button, solenoid valve and relay to inject a shot before mashing the pedal. It works well on the car acording to the wide band and lack of detonation. But when bench tested the non triggered solenoid valves leak by when the pump runs and only one stage is activated. Is this normal? Was the solenoid valve made only to hold back vacum not to isolate stages from a running pump? Also what direction is the valve to be installed? I have not taken one of these valves apart but from other valves I have taken apart there is a peferred direction for flow as pertaining to needle seat arangement, and for assistaning sealing under pressure oposed to lifiting the needle off it seat. A side note the " new revised check valve" that you sent me seems to work fine on the bench but I have not run it on the car. I am glad to see you are continually improving your products.

06-28-2008	#3 (permalink)
first/thridgen Water Injection Year: 1968 Make: Chevy Model: Camaro Join Date: Dec 2006 Posts: 27	Re: Wrong Aplication for Solenoid Valve or Product Problem Thanks for the help. I am already running your pro. con. off the map sensor. It works well for the vaccum side of it. Other then I would rather see a start duty cycle of 50% instead of 15% for my aplication thou. I have a very radical engine (260psi cranking pressure) 50/50 water meth on top of the stock fuel table will not stop the detonnation when running 87 octane fuel. I run a minus 15% in the power enrichment table thus giving me about a 50%/50% mix of 87octane gasoline and straight methanol in the mid rpm range. This is why I need stages triggered by rpm. I had great luck today by orienting the valve direction, lower the pump presure switch setting as low as it would go (130psi) dead headed, and rewiring the solinoids that when the pump is on it always has at least one path for fuel flow wich lowered line pressure to around 100psi. The valves are isolating fine at this pressure even if they were never designed for it. I had them backwards in the begining. Last edited by first/thridgen; 06-28-2008 at 08:21 AM.