Fuel Shim
Post Fiend
Joined: Jul 2005
Posts: 14,582
Likes: 12
From: 21791
If anything, it will probably shorten the pump's life a bit. The main problem that would be best eliminated is the small check-valves on the inlets to the cylinder head's fuel rails, they are almost too small to get a paper clip through them. I run my fuel pressure at 72ish psi at idle, and i can turn it down or up with my regulator. It gets really quiet below 20psi, and over 75 psi it seems to make the engine louder, more injector clackle.
Thread Starter
|
Postmaster
Joined: Dec 2005
Posts: 3,405
Likes: 0
Correction, it at about 76 psi now. From where i was standing and my truck being so tall it looked like 79~80ish but after i went for a test and i looked at it it was showing 76 at idle and now it only drops to about 61 with the pedal to the floor.
Senior User
Joined: Jul 2003
Posts: 139
Likes: 0
I'm new to this, but how would you adjust your pressure from 80 down to 70-75 if you used a BB to get it to 80. Forgive me if there is an obvious answer but I haven't done this mod yet, and I'm thinking about it. Thanks.
Posting Guru
Joined: Aug 2005
Posts: 1,768
Likes: 0
From: Central Alabama
Originally Posted by aaron o.
I'm new to this, but how would you adjust your pressure from 80 down to 70-75 if you used a BB to get it to 80. Forgive me if there is an obvious answer but I haven't done this mod yet, and I'm thinking about it. Thanks.
Senior User
Joined: Jul 2003
Posts: 139
Likes: 0
Thanks, different size bb was all I could think of but didn't know of different size bb's. I just wasn't sure if there was a different way of "fine tuning" them once a bb/screw was installed. I'm sure once I get it in pieces and have it in my hand it will make a lot more sense. Thanks again.
Trending Topics
Elder User
Joined: Sep 2006
Posts: 852
Likes: 0
From: ARIZONA
whats the stock fuel preassure, and what do you really get from the increased fuel preassure. as i am interested in a shim kit.
i read and seen the pictures on 7point3, but i didnt get much from it.
i read and seen the pictures on 7point3, but i didnt get much from it.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Posting Guru
Joined: Aug 2005
Posts: 1,768
Likes: 0
From: Central Alabama
Originally Posted by bigtorque
whats the stock fuel preassure, and what do you really get from the increased fuel preassure. as i am interested in a shim kit.
i read and seen the pictures on 7point3, but i didnt get much from it.
i read and seen the pictures on 7point3, but i didnt get much from it.
Elder User
Joined: Sep 2006
Posts: 852
Likes: 0
From: ARIZONA
thanks, i will start planning my shim kit from diesel innovations and an oem pump.
and am also planning to do the cackle cure kit from veggiestroke, i sounds like a good deal, im still awaiting for the testing results, and my HX hose will be in on monday.
and am also planning to do the cackle cure kit from veggiestroke, i sounds like a good deal, im still awaiting for the testing results, and my HX hose will be in on monday.
Posting Guru
Joined: Aug 2005
Posts: 1,768
Likes: 0
From: Central Alabama
The interesting thing about replacing the fuel pump is, you may not need the shim kit. When I had my fuel pump replaced, it read 65psi. Since I already had the kit, I experimented a little. 65-75psi are the readings I've seen most here on the forum after shimming.
