merlot566jka
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Well guys I've been busy as **** lately so I haven't been on here much. Last weekend I started doing the head gaskets on my deuce. Since I had it all apart I took the injectors to the only outfit in town that can test them. They said free to test, $25 to rebuild... So I said sure. Well the call me back the next day and said they all failed and they needed $598 to rebuild all 6. I was a bit stunned and frankly pissed. I asked why they failed, and they said cause they all leak, don't atomize and half of them are clogged. They needed $75 for each nozzle, plus the discounted rebuild cost cause "he used to do these in the army in the 70s"
I said no way. I can get new injectors for less than that, and the truck was running fine before, just leaking oil. I find it hard to believe that all 6 were bad and 3 were clogged.
So I did some searching. Found a great thread where someone else had the exact same injectors I had. They listed the nozzle they use and a source where they were $1 each. I took this info to the injector shop and showed the guy. I asked him if he was familiar with how these injectors work, their rated pop pressure and if he knew what he was doing. He was very put off by my demeanor. (I wasn't happy) he said these injectors don't spray streams, and they are supposed to pop at 2700psi. I showed him the info saying they need to pop at 3500-3750, and the nozzles were $1.00. He said "$60 for the test and here are your injectors"... what ever.
So I go home and get an old bottle jack I found in the back of a pickup at a salvage yard. It was a 70s model jack that had worked great since I found it.
I tore it apart, welded up the bypass holes, removed this piston and had some hoses made. I welded a cast iron plumbing reducer and adds some fittings to connect my hose and gauge. I got the gauge from napa, 5000psi with 1000psi major and 100psi minor marks. I couldn't find anyone who knew what a ferrule was for connecting the injector. So I used a regular 3/8 fitting that threaded into the injector and a rubber o-ring inside the fitting to make the seal. Worked like a champ. My welding leaked everywhere. After a bit of welding disasters, I set it all up again, and started to pump it up. I got to 1100 psi and my gauge got stuck. I released pressure and remove the gauge. Still stuck at 1100psi. Well whatever that was my new zero. I reconnect everything and give it all another go. I get to 2700psi and the injector popped off. I was using 15w-40 for the test. It was sure enough two wimpy looking streams about 15* apart and both at an angle from center. Not satisfied with the oil, I switched to a mix of diesel and gas I had laying around. The bottle jack did not like this. I got to about 3100psi and the injector popped and it took a few cycles to get the oil out. Once it was on the thinner fuel, I got some atomization. But still not as dramatic as I wanted it to be. I thought 3100psi was going to be a whole lot more than what it was. I jacked with the set screw and eventually set it too high... My rig wouldn't pop it off. Then something inside the jack gave and I couldn't get above 3000psi again.
So now I am about to go up to HF and get a portable hydraulic kit and give that a go.
I've ordered 4 new nozzles, but so far, I don't think I need them. I don't see anything wrong with mine. Or maybe I don't know what I am looking for?
I will get some pics and videos up soon.
What are your thoughts?
These are the "made in Italy" injectors, with a stamped on date of '88 and the last two characters of the part number are "B2". The set screw inside is an Allen key. The injectors are two hole. An the found pop pressure is 3500-3750psi.
I have been and usually run the truck on used motor oil, diesel, gas, gear oil, kerosene, brake fluid, fryer grease and basically anything else I get my hands on. It's all filtered down to 10micron.
I said no way. I can get new injectors for less than that, and the truck was running fine before, just leaking oil. I find it hard to believe that all 6 were bad and 3 were clogged.
So I did some searching. Found a great thread where someone else had the exact same injectors I had. They listed the nozzle they use and a source where they were $1 each. I took this info to the injector shop and showed the guy. I asked him if he was familiar with how these injectors work, their rated pop pressure and if he knew what he was doing. He was very put off by my demeanor. (I wasn't happy) he said these injectors don't spray streams, and they are supposed to pop at 2700psi. I showed him the info saying they need to pop at 3500-3750, and the nozzles were $1.00. He said "$60 for the test and here are your injectors"... what ever.
So I go home and get an old bottle jack I found in the back of a pickup at a salvage yard. It was a 70s model jack that had worked great since I found it.
I tore it apart, welded up the bypass holes, removed this piston and had some hoses made. I welded a cast iron plumbing reducer and adds some fittings to connect my hose and gauge. I got the gauge from napa, 5000psi with 1000psi major and 100psi minor marks. I couldn't find anyone who knew what a ferrule was for connecting the injector. So I used a regular 3/8 fitting that threaded into the injector and a rubber o-ring inside the fitting to make the seal. Worked like a champ. My welding leaked everywhere. After a bit of welding disasters, I set it all up again, and started to pump it up. I got to 1100 psi and my gauge got stuck. I released pressure and remove the gauge. Still stuck at 1100psi. Well whatever that was my new zero. I reconnect everything and give it all another go. I get to 2700psi and the injector popped off. I was using 15w-40 for the test. It was sure enough two wimpy looking streams about 15* apart and both at an angle from center. Not satisfied with the oil, I switched to a mix of diesel and gas I had laying around. The bottle jack did not like this. I got to about 3100psi and the injector popped and it took a few cycles to get the oil out. Once it was on the thinner fuel, I got some atomization. But still not as dramatic as I wanted it to be. I thought 3100psi was going to be a whole lot more than what it was. I jacked with the set screw and eventually set it too high... My rig wouldn't pop it off. Then something inside the jack gave and I couldn't get above 3000psi again.
So now I am about to go up to HF and get a portable hydraulic kit and give that a go.
I've ordered 4 new nozzles, but so far, I don't think I need them. I don't see anything wrong with mine. Or maybe I don't know what I am looking for?
I will get some pics and videos up soon.
What are your thoughts?
These are the "made in Italy" injectors, with a stamped on date of '88 and the last two characters of the part number are "B2". The set screw inside is an Allen key. The injectors are two hole. An the found pop pressure is 3500-3750psi.
I have been and usually run the truck on used motor oil, diesel, gas, gear oil, kerosene, brake fluid, fryer grease and basically anything else I get my hands on. It's all filtered down to 10micron.
