Hi all. I am new here and have built my own meth injection kit that I am getting ready to install. I am using a shurflo pump. My question is, would it be feasible to use either a oil pressure ort fuel pressure 2" gauge to monitor my pumps psi? I think this would be more accurate than using a LED to make sure the pump is on and working. Has this been done before? Could I just tap my line from pump to nozzle and a T in the pressure line to the gauge? Thanks all.
Using a pressure gauge to verify pump's psi?
- Thread starter ghart999
- Start date
Welcome!
By registering with us, you'll be able to discuss, share and private message with other members of our community.
As long as the guage is compatible with the chemical being used, and you dont have a clogged nozzle.. you'll be ok.
Clogged nozzle=all the pressure in the world.
If you have the time and resources, why not develop an alcohol compatible inexpensive flow metering device. That way you can monitor how much is going into the motor.
Clogged nozzle=all the pressure in the world.
If you have the time and resources, why not develop an alcohol compatible inexpensive flow metering device. That way you can monitor how much is going into the motor.
I suppose that if I use an electronic pressure gauge with a sender I should be OK since the methanol will never reach the actual gauge. I wish I had the resources hbut I have no idea how I would go about building what you suggested.
Is there any difference between an oil pressure vs. fuel pressure gauge in how they work?
Is there any difference between an oil pressure vs. fuel pressure gauge in how they work?
The electric pressure sender will have to be alcohol compatible..if not it will rot. None of the Autometers will support any alcohol.
There are a few electric senders that will handle alcohol, tho limited to 100PSI and expensive. The ones that will read over 100 PSI are way out of reach $$$$ since theyre for industrial automation.
I had a 100 PSI guage in my car.. I would pin it by the time my car hit 10 PSI.. about the only thing I used it for was to see if the pump was priming.
There are a few electric senders that will handle alcohol, tho limited to 100PSI and expensive. The ones that will read over 100 PSI are way out of reach $$$$ since theyre for industrial automation.
I had a 100 PSI guage in my car.. I would pin it by the time my car hit 10 PSI.. about the only thing I used it for was to see if the pump was priming.
Bench test it by using a compressor or air pump and sticking the nozzle in the vac tube leading to the device that senses boost to trigger the pump on/off, and just pressurize the vac line and watch for alky to start pumping out of the nozzle...that way you can bench test it with driving down the road with a ton of boost to find out it ain't working and have to change the head gaskets 
If the pump is working well it should spray a strong stream/mist of alky out.
If the pump is working well it should spray a strong stream/mist of alky out.Ahhh, don't give up so easy. I ordered a basic gauge from McMaster Carr and it has been flawless for almost a year. Not expensive at all. I ordered two or three different sizes they were so cheap....I believe it is either 250psi or 300psi. I normally run right at 200 and I purge it at the beginning of every drive. I have not verified, but I believe if I had stopped up nozzles I would notice it on my purge reading.
If you need me to I can look back and let you know exactly which gauge I am using.
No mention of using a mechanical guage.
Yes you can buy from most industrial shops mechanical guages that will handle the alcohol no problem... but they come with a leash.. theyre pretty cheap too approx $20-25, plus fittings, hoses, etc.
No isolators for alcohol. So having one installed inside the cab..welll.. thats a judgement call.
Yes you can buy from most industrial shops mechanical guages that will handle the alcohol no problem... but they come with a leash.. theyre pretty cheap too approx $20-25, plus fittings, hoses, etc.
No isolators for alcohol. So having one installed inside the cab..welll.. thats a judgement call.
Actually, when he said
"Could I just tap my line from pump to nozzle and a T in the pressure line to the gauge?"
I think he was talking mechanical
I only run a 50/50 mix. I agree, if you are running straight you need to be careful, at the very least.....high quality lines (braided) and even then you are placing faith in the gauge. The best way (that I can think of)with a flammible mix would be with a fuel isolator or a windshield gauge.
turbocreation
New Member
- Joined
- Jul 1, 2006
- Messages
- 3
Well the Autometer sender is brass, but it has a rubber bladder thingy INSIDE. With that said, I've been using the autometer sender for a couple monthes now and it appears to be holding up. If it breaks I will just put the cheapo unit under the hood.
