Obs lift pump question
- Thread starter OBS-Addiction97
- Start date
JohnT24
Active member
Cool.
And thanks for the Baldwin filter cross reference numbers.
Well, at least one of them.
Question,
I'm wondering why you guys put shut offs on each end....
I do not have any shut offs and I have never had any problems changing filters
OBS-Addiction97
Member
I figured it would stop any extra fuel from both ends.
It’s also a cheap anti theft option if you’re leaving your truck for an extended time somewhere.
As far as the filters I love the Baldwin.
It’s also a cheap anti theft option if you’re leaving your truck for an extended time somewhere.
As far as the filters I love the Baldwin.
JohnT24
Active member
Here is the diagram I used for the pump.
Might help someone.
Might help someone.
OBS-Addiction97
Member
I just used a universal relay harness with cutout switch from summit.
lincolnlocker
Well-known member
Holy crap!
What fittings are those and is that the factory regulated return??
If so, that's genius!
OBS-Addiction97
Member
I reused as much of the factory setup as I could. Along with multiple items I had around the shop- mostly AN fittings, hose and hardware. So yes, it’s is a factory RR. I cut out the regulator from the fuel bowl (tightwad mod) and reused the stock Y lines. Best part is not having to remove the turbski.
The fitting to reuse the factory Y fuel
Lines and banjo bolt is a #12 sae orb to a -6 AN or or 3/8” barb. I had to source mine from a locally from a hydraulic shop and that’s what they had. There’s not much online to source a fitting like that.
Last edited:
lincolnlocker
Well-known member
JohnT24
Active member
To get to the fitting at the back of the passenger side head possibly... ?
I was able to get to mine by just removing the downpipe.
lincolnlocker
Well-known member
Ohhh, ok. You had to mess with that fitting for what?
JohnT24
Active member
lincolnlocker
Well-known member
Ohhhhh... ok.. what fuel pump is that? Definitely not a oe superduty bosch pump.
OBS-Addiction97
Member
To remove the rear head fitting which I didn’t have to do since I reused the factory Y line.
JohnT24
Active member
lincolnlocker
Well-known member
Gotcha!
Ah. Decent pump for the money then. Just don't let it sit for any length of time or diesel will gum up in it. Technically not diesel rated. But they have been used for a long time for exactly that. I had a couple on whitey.
lincolnlocker
Well-known member
Will the stock fuel bowl and regulated return allow efuel to regulate to 65psi?
I have a pre filter to a stock bosch superduty pump to the feed nipple line going into the fuel bowl and i cant get it below 80ish psi. I have the spring and plunger completely removed and only the brass plug in it where the pressure spring is and its way high..
Where would the restriction be not allowing it to regulate?
I have a pre filter to a stock bosch superduty pump to the feed nipple line going into the fuel bowl and i cant get it below 80ish psi. I have the spring and plunger completely removed and only the brass plug in it where the pressure spring is and its way high..
Where would the restriction be not allowing it to regulate?
lincolnlocker
Well-known member
Im a idiot i guess. With the research i have done, i guess its completely different then a super duty bowl.
Can fuel pressure be regulated pre fuel bowl??
Can fuel pressure be regulated pre fuel bowl??
lincolnlocker
Well-known member
Im thinking like a inline regulator like you would do on a carbureted gasser. I know the pressures are not even the same but still...
OBS-Addiction97
Member
I reused the factory obs bowl regulator that I cut out.
It’s in the picture above. Look up tight wad mod
lincolnlocker
Well-known member
Yes, im an idiot. No im not going to do that.
Nope. Not like that either. Lol.
I used one of the cheap fleabay adapters that is for the pump delete. Im blocking off the fuel bowl port with a pice of hose and a plug and doing the same with the return port coming out of the regulater/bowl. Going to use a normal regulator and go from the block off return fitting thingy to the regulator then from the regulator to the return hard line.
Yeah. I seen your picture. I removed the spring and plunger thingy completely and it wouldn't regulate pressure. Climbed to 90 psi. So thats why im confused. So im just going to use it to feed fuel with the guts completely out of it and go to the actual regulator that i mentioned above
I also learned that the aftermarket fuel filter lids that come on the filters are weak as hell and wont hold 60psi. They flex and pop the oring out and fuel geysers out. Lol. Ordered a billet filter lid from riffraff so that wont be a problem anymore.
Yes i know, could have just did a bowl delete for the price. Trying to keep it simple as hell. Its for a young lady that knows nothing about these trucks and if any issues arise, she can order or change parts that are close to oem as possible. Only thing right now that would be different is that if she ever had pump issues is that she would have to tell the parts store that it is for a 7.3 superduty from 99-03... rest is factory.
Worse case, she has to change a hose that isnt for either year.. lol
