No 45/90* fitting is required. I’ve installed lots of them like this and cringe a little when I see people hacking up their fuel bowl drain valve and stuff....

ISSPRO sender with snubber and straight #4 ORB to 1/8” adapter.

 

My install/application did NOT work like that with the OEM HPOP hoses and engine harness or with the updated OEM HPOP hoses.

Without the snubber, the ISSPRO gauge and connector were a snug fit, but it worked. With the snubber provided by ISSPRO, there was definitely contact and pressure against the back of the connector for the sending unit and put the wires in a sharp 90* bend and under pressure. I ended up removing the snubber, installed the 90* fitting and all has been great for several years.

We usually see things the same way when it comes to these trucks, but there are those few times when we see things differently, and that is OK. This is one of those times, well for my application it is/was.

I also feel inclined to mention this method is utilizing the post filter port which is the lower passenger side port.

EDIT: I'll see if I can find some pictures of the pressure being applied to the connector/wires using the horizontal mounting method in order to compare to your pictures. There must be something different going on...

These are what I could find in short order before starting my projects for the day.

In this picture, you can see the original HPOP hoses and the ISSPRO sending unit in the horizontal position without the snubber. As I said earlier, it was a snug fit without the snubber and uncomfortably tight with the snubber. This was when I initially installed the unit. More pictures coming if I can find any...



Another image of the sending unit which looks like it is shot from the driver side. This one doesn't look as bad, but in my opinion with the engine vibration and the HPOP hose vibrations, the wires would not have stood a chance.



You cannot really see the sending unit here, but since you provided a somewhat "whole image" shot, I thought I would do the same.

 

I hate it when you tempt me with these clean looking installs of gear I need

 

Interesting. I’ve got one here that has stock HPO lines etc, lemme go look at it.

Post filter port is the only one that matters!! Good observation.

I’ve been wrong before and don’t mind admitting when I am. Not trying to throw stones (my house is glass!). I just know people read stuff and think they need to do it a certain way - but the reality is these trucks are different from the factory in addition to the ‘mods’ we do.

 

This one is from before they started sending snubbers with 7.3 kits. But, plenty of room for one under HPO lines and before intake plenum. I did route the wire under the plenum in the pic above for cleaner install.




I do assemble the adapter, snubber and sensor on the workbench and then put it in the truck. There may be other challenges trying to put it together in the valley.

 

I often take a different path in life than most, so it is OK with me if we have observed different things on nearly identical trucks. I understand and agree that your experience with the 7.3L is vastly more than mine, I just know what I saw and how I remedied the future issue before it was an issue.

No throwing stones here either brother. Your right, internet lore, BS and influence is strong, even here on the FTE at times. The only "right" way I see to accomplish a mod or customization on these trucks is the way that the owner feels is right in their heart. Even if some of us disagree with them, it is their desire and their truck, so have fun with it!

I added some old pictures to my post above. That was all I could find, so be gentle...

EDIT: Looking at the last picture you uploaded, perhaps my HPOP line was twisted or turned toward the front of the engine. I still had the OEM fittings and they can and do turn a bit. Maybe that was the problem all along and I thought it was the space constraints... I don't know, that was years ago and so much has changed since then. Maybe I was being ignorant and assumed the sending unit would not fit.

This is the same hose that had the oil leak on the fitting for a couple of months that eluded me. Perhaps each time I have an issue with the truck I should start with that hose...

 

I too could not get the FP sensor/snubber/straight adapter combo to fit off the post-filter port of the fuel bowl without running into the HPOP lines. I would have preferred not to hack the drain valve due to my 90 degree sensor installation, but did not see another way.

Here's a view of what I ran into:




The HPO line was in the way. The engine harness directly above the HPO line prevented positioning the HPO line up and out of the way. It's possible I could have loosened the JIC connections and pushed the HPO line up a bit more. I can see, SSJ, you have a lot more room in the installation you showed than I appear to have.

 

In case we need them - and it's not like I have new gauges and this same fuel pressure sensor and snubber sitting the box ready for install - what 45* and 90* fittings are the right ones to use?

Mark

 

Everyone needs one of these!

 

The fuel filter fitting is a No. 4 ORB. You can get a 45 or 90 adapter to go from here to the 1/8” NPT snubber and sender IF you need one. Riffraff and Dieselorings sell them.

 

My Autometer gauge did not come with a snubber. It fit horizontally as SSJ has shown, but without the added length of the snubber. I’m running the factory installed HPO lines. I couldn’t find any photos on my phone and am to lazy to walk to the garage right now.

I’m thinking someone could make a -4orb fitting with a built in snubber...

 

Snubbers... Some 7.3s need them, others don't.

 

I don't have a snubber but I did get a replacement sender a few years ago. A 45 made the install nice and it does not touch anywhere or get in the way of the drain lever.

 

Snubbers, when i first read that i felt like it had something to do with the pressure the sending unit sees. Then i realized the sending unit is just like our icp sensor. And well it doesnt use a snubber. So i mounted my fuel pressure sending unit using just the 1/8 npt fitting. Its snug in the van. I mounted it by feel only. And used a flashlight looking under the turbo from the doghouse to check for leaks.

 

Fuel sender is rated for 100 PSI. The fuel spikes in our trucks can reach over 800 PSI! My 7.3 needed a snubber and a needle valve. Went through at least a dozen senders. ISSPRO replaced every sensor and covered the cost of the snubber and needle valve. Isspro is a great company and we are happy to work with them.