Ive run the cat filter above which I believe is 8psi and 44gph, and I eliminated the factory filter that Constsntly returns. Instead I added a poppet check valve set at 5psi to the fuel system high point that keeps 5psi on my injection pump at all times and returns only what's above 5psi, so it bleeds the air automatically and keeps back pressure on the ip. I have verified it to be 6psi and returning a steady stream with that pump at idle, didn't ever permanently mount a fuel pressure gauge to verify while driving but I'm sure it's keeping up with 5/16 stainless line the whole way
Any chance of getting a pn or more info on said " poppet valve"?
I'm interested in this as I've noticed some benifit over the 23 year old 40 k mile mech pump.
Altho as mel states I had to retime it.
7.3L IDI Turbo Diesel Engine Performance Specifications
Engine Model A-185, A-166
Number of Cylinders 8
Configuration OHV V8
Bore 104.39 mm (4.11 inch)
Stroke 106.20 mm (4.18 inch)
Displacement 7.3 Liters (444 cu inch)
Crankshaft Rotation (Viewed from
Flywheel End of Engine) Counterclockwise
Compression Ratio 21.5:1
Firing Order 1-2-7-3-4-5-6-8
Idle Speed (No Load)* 650 rpm ± 50 rpm
Governor Speed (No Load) 3660 ± 50 rpm
Governor Speed (Full Load Rated) 3000 rpm
Timing (Dynamic) 8.5 ± 2 Degrees BTDC
Injection Pump Stanadyne DB-2
Injection Nozzle
Opening Pressure (New) 13,100 ± 517 kPa (1,900 ± 75 psi)
Opening Pressure (Minimum) 9,998 kPa (1,450 psi)
Crankcase Pressure-No Load (Maximum) 20 kPa (6 in-H2O) @ 3000 rpm
Fuel Pressure (Filter Inlet) 14 kPa (2 psi) @ idle
Fuel Pressure (Filter Outlet) 7 kPa (1 psi) @ 3000 rpm
Fuel Pump Suction 20 kPa (6 in. H2O) @ 3000 rpm
Fuel Return Line Pressure 14 kPa (2 psi) @ 3000 rpm
Valve Lifter 0
Valve Lash
Engine Lube Oil Pressure
Low Idle, Minimum 69 kPa (10 psi)
(Engine at Operating Temperature) 276-482 kPa (40-70 psi)
Crankcase Capacity (Without Filter) 8.5 L (9 qt.)
Crankcase Capacity (With Filter) 9.5 L (10 qt.)
Thermostat Opening Temperature 89°C (192°F)
* Manual transmission in NEUTRAL position. Automatic transmission in DRIVE position.
Nice stats' good info for diagnostics right there!
@FarmerFrank
Did you run alternative fuel thru your system?
Curious as to why an earley death.
That would suck pond water for sure.