How does the early 7.3PS differ from the 7.3IDI?

If I've read correctly the IDI is mechanically injected with a rotary injection pump, while the PS uses oil pressure to pressurize the diesel and then fires electronic injectors when the PCM says so. The IDI has external fuel lines and the PS has passages in the head.

The bore and stroke are the same, but are the engine's internals, or the block itself?

 

block on the psd has piston cooling jets other than that there the same.

then everything else on the rest of the motor is differnt. psd way more power, more reliable, cleaner emmisions, more fun to drive!!

 

https://www.ford-trucks.com/forums/5...di-vs-psd.html

 

Piston cooling jets? As in an oil jet in the block directed at the pistons?

Also, are the cylinder walls as thin on the 7.3PS as on the 7.3IDI?

Got that, thanks. I was hoping for a little more detail on what was different, like: do cams, cranks, rods, pistons, or the block itself interchange.

 

the mother load. all you ever wanted to know:


<TABLE style="FONT-SIZE: 10pt" cellPadding=2 width="95%"><TBODY><TR><TH noWrap>7.3 DI TURBO</TH><TH noWrap> 7.3L IDI TURBO</TH><TH noWrap> 7.3L NA</TH></TR><TR><TH colSpan=4><HR>ENGINE SPECIFICATIONS</TH></TR><TR><TH align=left colSpan=4>TYPE</TH></TR><TR><TD></TD><TD>Diesel, 4-Cycle Type,

Direct Injection
</TD><TD>Diesel, 4-Cycle Type,

Indirect Injection
</TD><TD>Diesel, 4-Cycle Type,

Indirect Injection
</TD></TR><TR><TH align=left colSpan=4>CONFIGURATION</TH></TR><TR><TD></TD><TD>OHV V-8</TD><TD>OHV V-8</TD><TD>OHV V-8</TD></TR><TR><TH align=left colSpan=4>DISPLACEMENT</TH></TR><TR><TD></TD><TD>444 cu. in.

(7.3 litres)
</TD><TD>444 cu. in.

(7.3 litres)
</TD><TD>444 cu. in.

(7.3 litres)
</TD></TR><TR><TH align=left colSpan=4>BORE & STROKE</TH></TR><TR><TD></TD><TD>4.11 x 4.18 in.

(10.44 x 10.62 cm)
</TD><TD>4.11 x 4.18 in.

(10.44 x 10.62 cm)
</TD><TD>4.11 x 4.18 in.

(10.44 x 10.62 cm)
</TD></TR><TR><TH align=left colSpan=4>COMPRESSION RATIO</TH></TR><TR><TD></TD><TD>17.5:1</TD><TD>21.5:1</TD><TD>21.5:1</TD></TR><TR><TH align=left colSpan=4>ASPIRATION</TH></TR><TR><TD></TD><TD>Turbocharged with Back Pressure Device for warm-up</TD><TD>Turbocharged with Wastegate Control</TD><TD>Naturally Aspirated</TD></TR><TR><TH align=left colSpan=4>RATED POWER</TH></TR><TR><TD></TD><TD>210 hp @ 3000 rpm</TD><TD>190 hp @ 3000 rpm</TD><TD>185 hp @ 3000 rpm</TD></TR><TR><TH align=left colSpan=4>RATED TORQUE</TH></TR><TR><TD></TD><TD>425 lb.-ft. @ 2000 rpm</TD><TD>395 lb.-ft. @ 1400 rpm</TD><TD>360 lb.-ft. @ 1600 rpm</TD></TR><TR><TH align=left colSpan=4>TOTAL WEIGHT - DRY</TH></TR><TR><TD></TD><TD>920 lbs (417 kg)</TD><TD>900 lbs (408 kg)</TD><TD>860 lbs (390 kg)</TD></TR><TR><TH></TH><TH noWrap>7.3 DI TURBO</TH><TH noWrap>7.3L IDI TURBO</TH><TH noWrap>7.3L NA</TH></TR><TR><TH colSpan=4><HR>COOLING SYSTEM</TH></TR><TR><TH align=left colSpan=4>WATER FLOW</TH></TR><TR><TD></TD><TD>80 gpm @ 3300 rpm</TD><TD>79 gpm @ 3000 rpm</TD><TD>80 gpm @ 3300 rpm</TD></TR><TR><TH align=left colSpan=4>THERMOSTAT LOCATION</TH></TR><TR><TD></TD><TD>In Water Pump Housing</TD><TD>Water Outlet</TD><TD>Water Outlet</TD></TR><TR><TH align=left colSpan=4>WATER PUMP</TH></TR><TR><TD></TD><TD>Centrifugal Type</TD><TD>Centrifugal Type</TD><TD>Centrifugal Type</TD></TR><TR><TH align=left colSpan=4>WATER PUMP ROATIONS</TH></TR><TR><TD></TD><TD>Clockwise</TD><TD>Counterclockwise</TD><TD>Counterclockwise</TD></TR><TR><TH align=left colSpan=4>FAN HUB</TH></TR><TR><TD></TD><TD>Right-Hand Thread</TD><TD>Left-Hand Thread</TD><TD>Left-Hand Thread</TD></TR><TR><TH></TH><TH noWrap>7.3 DI TURBO</TH><TH noWrap>7.3L IDI TURBO</TH><TH noWrap>7.3L NA</TH></TR><TR><TH colSpan=4><HR>LUBRICATION SYSTEM</TH></TR><TR><TH align=left colSpan=4>TYPE</TH></TR><TR><TD></TD><TD>Full Flow</TD><TD>Full Flow</TD><TD>Full Flow</TD></TR><TR><TH align=left colSpan=4>CAPACITY (INCLUDING FILTER)</TH></TR><TR><TD></TD><TD>12 U.S. Qts. (11 liters)</TD><TD>10 U.S. Qts. (9.5 liters)</TD><TD>10 U.S. Qts. (9.5 liters)</TD></TR><TR><TH align=left colSpan=4>OIL PUMP</TH></TR><TR><TD></TD><TD>Gearotor Pump</TD><TD>Gear Pump</TD><TD>Gear Pump</TD></TR><TR><TH align=left colSpan=4>OIL COOLER</TH></TR><TR><TD></TD><TD>30 Fins per inch</TD><TD>30 Fins per inch</TD><TD>24 Fins per inch</TD></TR><TR><TH align=left colSpan=4>LUBE OIL SYSTEM</TH></TR><TR><TD></TD><TD>Enhanced for New Injection System</TD><TD>Not Applicable</TD><TD>Not Applicable</TD></TR><TR><TH align=left colSpan=4>LUBE OIL FILTER</TH></TR><TR><TD></TD><TD>Microglass - Extender</TD><TD>Cellulose</TD><TD>Cellulose</TD></TR><TR><TH align=left colSpan=4>OIL FILTER MOTORCRAFT/PART NUMBER</TH></TR><TR><TD></TD><TD>FL-1995/F4TZ-6731-A</TD><TD>FL-784</TD><TD>FL-784</TD></TR><TR><TH align=left colSpan=4>OIL DRAIN INTERVAL</TH></TR><TR><TD></TD><TD>3000 - 5000 miles with microglass filter</TD><TD>2500 - 5000 miles</TD><TD>2500 - 5000 miles</TD></TR><TR><TH></TH><TH noWrap>7.3 DI TURBO</TH><TH noWrap>7.3L IDI TURBO</TH><TH noWrap>7.3L NA</TH></TR><TR><TH colSpan=4><HR>HIGH PRESSURE LUBRICATION SYSTEM</TH></TR><TR><TH align=left colSpan=4>HIGH PRESSURE PUMP</TH></TR><TR><TD></TD><TD>Gear Driven Swash Plate</TD><TD>Not Applicable</TD><TD>Not Applicable</TD></TR><TR><TH align=left colSpan=4>PRESSURE CONTROL</TH></TR><TR><TD></TD><TD>Pulse-Width Modulated Pressure Regulated Spill Valve (EEC-V)</TD><TD>Not Applicable</TD><TD>Not Applicable</TD></TR><TR><TH align=left colSpan=4>OIL RAILS</TH></TR><TR><TD></TD><TD>High Pressure Rails in Cylinder Heads</TD><TD>Not Applicable</TD><TD>Not Applicable</TD></TR><TR><TH align=left colSpan=4>OIL LINES</TH></TR><TR><TD></TD><TD>High Pressure from Pump to Rails</TD><TD>Not Applicable</TD><TD>Not Applicable</TD></TR><TR><TH align=left colSpan=4>LUBRICATION OIL TEMPERATURE</TH></TR><TR><TD></TD><TD>Used for Injection Control Strategy</TD><TD>Not Applicable</TD><TD>Not Applicable</TD></TR><TR><TH></TH><TH noWrap>7.3 DI TURBO</TH><TH noWrap>7.3L IDI TURBO</TH><TH noWrap>7.3L NA</TH></TR><TR><TH colSpan=4><HR>FUEL SYSTEM</TH></TR><TR><TH align=left colSpan=4>TYPE</TH></TR><TR><TD></TD><TD>Electronically-controlled Direct Injection</TD><TD>Mechanical Indirect Injection</TD><TD>Mechanical Indirect Injection</TD></TR><TR><TH align=left colSpan=4>SUPPLY SYSTEM</TH></TR><TR><TH align=left colSpan=4>Pump</TH></TR><TR><TD></TD><TD>Mechanical Tandem: Diaphragm/Piston</TD><TD>Mechanical Single Diaphragm</TD><TD>Mechanical Single Diaphragm</TD></TR><TR><TH align=left colSpan=4>Filter</TH></TR><TR><TD></TD><TD>Replaceable Element (FD-4595A/F4TZ-9N184-B)</TD><TD>Conventional Spin-On</TD><TD>Conventional Spin-On</TD></TR><TR><TH align=left colSpan=4>Return</TH></TR><TR><TD></TD><TD>Flow Regulated</TD><TD>Pump and Injector Leak-Off</TD><TD>Pump and Injector Leak-Off</TD></TR><TR><TH align=left colSpan=4>FUEL DELIVERY AND CONTROL</TH></TR><TR><TH align=left colSpan=4>System</TH></TR><TR><TD></TD><TD>Unitized Injectors</TD><TD>Mechanical Pump, Lines and Injection Nozzles</TD><TD>Mechanical Pump, Lines and Injection Nozzles</TD></TR><TR><TH align=left colSpan=4>Injector Actuation</TH></TR><TR><TD></TD><TD>Hydraulic/Electrical</TD><TD>Mechanical Hydraulic</TD><TD>Mechanical Hydraulic</TD></TR><TR><TH align=left colSpan=4>Injector Timing</TH></TR><TR><TD></TD><TD>Electronic Controlled by EEC-V (not adjustable)</TD><TD>Mechanical</TD><TD>Mechanical</TD></TR><TR><TH align=left colSpan=4>Fuel Control</TH></TR><TR><TD></TD><TD>Electronic</TD><TD>Mechanical</TD><TD>Mechanical</TD></TR><TR><TH align=left colSpan=4>Diagnosis</TH></TR><TR><TD></TD><TD>EEC Quick Test, Diagnosis with Super Star Tester II, Pressure Gauges</TD><TD>Pressure Gauges, Timing Meter</TD><TD>Pressure Gauges, Timing Meter</TD></TR><TR><TH></TH><TH noWrap>7.3 DI TURBO</TH><TH noWrap>7.3L IDI TURBO</TH><TH noWrap>7.3L NA</TH></TR><TR><TH colSpan=4><HR>ELECTRONIC ENGINE CONTROLS</TH></TR><TR><TH align=left colSpan=4>SYSTEM</TH></TR><TR><TD></TD><TD>EEC-V</TD><TD>None</TD><TD>None</TD></TR><TR><TH align=left colSpan=4>INJECTION CONTROL</TH></TR><TR><TD></TD><TD>Injector Driver Module</TD><TD>Not Applicable</TD><TD>Not Applicable</TD></TR><TR><TH></TH><TH noWrap>7.3 DI TURBO</TH><TH noWrap>7.3L IDI TURBO</TH><TH noWrap>7.3L NA</TH></TR><TR><TH colSpan=4><HR>CYLINDER HEAD</TH></TR><TR><TH align=left colSpan=4>COMBUSTION CHAMBER DESIGN</TH></TR><TR><TD></TD><TD>Re-entrant Chamber in Piston</TD><TD>Pre-Combustion Chamber in Head</TD><TD>Pre-Combustion Chamber in Head</TD></TR><TR><TH align=left colSpan=4>ROCKER ARM ASSEMBLY</TH></TR><TR><TD></TD><TD>Plate-Type Valve Lever</TD><TD>Stamped Steel</TD><TD>Stamped Steel</TD></TR><TR><TH align=left colSpan=4>EXHAUST VALVE MATERIAL</TH></TR><TR><TD></TD><TD>Made of Hot Forged 21-2n Material</TD><TD>Made of Iconel for Temperature Resistance</TD><TD>Made of Chrome-Plate Steel</TD></TR><TR><TH align=left colSpan=4>OIL RAILS</TH></TR><TR><TD></TD><TD>High Pressure Rails in Cylinder Heads</TD><TD>Not Applicable</TD><TD>Not Applicable</TD></TR><TR><TH align=left colSpan=4>FUEL PASSAGES</TH></TR><TR><TD></TD><TD>In Cylinder Heads</TD><TD>Not Applicable</TD><TD>Not Applicable</TD></TR><TR><TH></TH><TH noWrap>7.3 DI TURBO</TH><TH noWrap>7.3L IDI TURBO</TH><TH noWrap>7.3L NA</TH></TR><TR><TH colSpan=4><HR>CYLINDER BLOCK</TH></TR><TR><TH align=left colSpan=4>CYLINDER BLOCK MATERIAL</TH></TR><TR><TD></TD><TD>Cast Iron</TD><TD>Cast Iron</TD><TD>Cast Iron</TD> <TR><TH align=left colSpan=4>PISTON MATERIAL</TH></TR><TR><TD></TD><TD>Aluminum-Alloy, Cast in Ni-Resist Insert</TD><TD>Anodized, Aluminum-Alloy, Cast in Ni-Resist Insert</TD><TD>Aluminum-Alloy, Cast in Ni-Resist Insert</TD></TR><TR><TH colSpan=4></TH></TR><TR><TD></TD><TD>Integral Combustion</TD><TD>Not Applicable</TD><TD>Not Applicable</TD></TR><TR><TH align=left colSpan=4>PISTON RINGS</TH></TR><TR><TD></TD><TD>#1 Full Keystone,

#2 Taper Faced,
#3 Two Piece Oil
</TD><TD>#1 Full Keystone,

#2 Full Keystone,
#3 Two Piece Oil
</TD><TD>#1 Rectangular,

#2 Taper Faced,
#3 Two Piece Oil
</TD></TR><TR><TH align=left colSpan=4>CONNECTING ROD DESIGN</TH></TR><TR><TD></TD><TD>Forged Steel

Larger Connecting Rod Bore for Wrist Pin
Larger Boring Surface
</TD><TD>Forged Steel

Larger Connecting Rod Bore for Wrist Pin
</TD><TD>Forged Steel

Smaller Bore for Smaller Wrist Pin
</TD></TR><TR><TH align=left colSpan=4>PISTON PIN BORE DIAMETER</TH></TR><TR><TD></TD><TD>1.3086 in. (21.45 cm)</TD><TD>1.3086 in. (21.45 cm)</TD><TD>1.1104 in. (18.2 cm)</TD></TR></TBODY></TABLE><!-- Begin close content table --></TABLE><!-- End close content table --><!-- Begin footer --><TABLE cellSpacing=0 cellPadding=0 width="100%" bgColor=#ffffff border=0><TBODY><TR><TD><CENTER>

</CENTER>
</TD></TR></TBODY></TABLE>

 

Wow, great info!

 

How many quarts of coolant do the 7.3PS system hold?
Can you adjust the idle speed? How?
What kind of lifters are used?

 

NO IDEA ABOUT COOLANT, idle speed non-adjustable, hyd. lifters