OBS Fuel System Questions
Thread Starter
|
Junior User
Joined: Nov 2019
Posts: 50
Likes: 0
OBS Fuel System Questions
So, I'm getting parts together to build a fuel system. I was going to do the standard regulated return that most folks do. Then I started learning about aerated fuel and the damage it can cause to injectors. So I learned how air separators work, (the patents are out there and explain). It's actually fairly simple, but it requires moving quite a bit of fuel. Which leads me to the question, has anyone kept both tanks in an OBS and gone to larger fuel lines? My thoughts on this are to get a second switching valve and plumb them in parallel for both tanks, or setup a transfer pump and only actually feed from one tank.
There is a moderator on another form who says the stock 3/8" line is not large enough for 238/80s but doesn't really support his assertion. Is that true? My FPR has AN10 inlet and outlet, and AN6 return. I wouldn't mind running larger lines, I just need to figure out how to keep using both tanks.
I know I could switch to a larger single tank, but I want to keep my spare tire and both tanks.
Thanks for any help folks!
There is a moderator on another form who says the stock 3/8" line is not large enough for 238/80s but doesn't really support his assertion. Is that true? My FPR has AN10 inlet and outlet, and AN6 return. I wouldn't mind running larger lines, I just need to figure out how to keep using both tanks.
I know I could switch to a larger single tank, but I want to keep my spare tire and both tanks.
Thanks for any help folks!
Lead Driver
Joined: May 2009
Posts: 6,807
Likes: 704
From: Tobyhanma, PA
I think you're overthinking this. I haven't read of anyone having an issue with the stock line size. Maybe on a pro-level competition truck it'd require larger lines, but they're probably running a single tank.
Hotshot
Joined: Dec 2005
Posts: 14,375
Likes: 604
From: evansville in
All I will say is my stock lines,gsl392,aeromotive reg and 250/200 never moved my incab fuel pressure gauge. Maybe on an all out crazy tune but I have never had mine all the way up. Heck my tow time is pretty stupid @50lbs..
The trans checked out on my#4 tune.
The trans checked out on my#4 tune.
Thread Starter
|
Junior User
Joined: Nov 2019
Posts: 50
Likes: 0
Anyone know how to calculate minimum and maximum fuel consumption for a given injector. I've heard 238cc is actually 238cc per minute, which times eight would be about 1,900cc per minute. Is that right?
Thread Starter
|
Junior User
Joined: Nov 2019
Posts: 50
Likes: 0
To my knowledge, the fuel sloshing in the tank alone is enough to introduce air. Pressurizing air to ~20k psi and sending it through the small injector holes erodes the holes. I'm going to do this primarily as protection for my injectors. When I get it all sorted I'll share some videos. Sadly work has kept pushing this project back.
Thread
Thread Starter
Forum
Replies
Last Post
Jonnys.1991
1987 - 1996 F150 & Larger F-Series Trucks
7
Apr 2, 2015 07:49 AM
MONAVIERONJON
1994.5 - 1997 7.3L Power Stroke Diesel
1
Jun 19, 2013 09:26 AM
karatedavid
1973 - 1979 F-100 & Larger F-Series Trucks
1
Jun 27, 2010 12:40 AM
Centroplex
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
4
Jun 7, 2007 07:41 AM
gamehunter
1987 - 1996 F150 & Larger F-Series Trucks
2
Jul 19, 2002 08:19 PM
