APS Extreme Performance Full Return Fuel System
 

 
 

 

APS Extreme Performance Full Return Fuel System

The C6 Z06 Corvette has specific fuel system requirements in order to support the demands of high horsepower turbocharged performance - in a nutshell, huge horsepower demands huge fuel flow that is metered very precisely.

For ultra high horsepower applications as seen on the Z06, APS has developed a thoroughly engineered Extreme Performance Full Return fuel system that is not only very comprehensive, but also highly robust for extereme performance and total peace of mind.

Designed to operate with the APS Intercooled Twin Turbo Z06 System, the heart of the APS Extreme Performance Fuel System is the replacement drop-in surge tank/fuel pump assembly that incorporates twin high volume fuel pumps, return circuit and provision for the stock fuel sender assembly.

Precision construction in stainless steel ensures that the APS drop-in pump assembly delivers bullet-proof reliability and a fume tight seal for total peace of mind.

Each of the twin high volume fuel pumps situated inside the APS drop-in surge tank delivers a huge volume of fuel to their individual Teflon lined stainless steel braided hoses.

By mating each fuel pump with its own fuel line to the engine bay, the maximum flow rate possible is achieved in order to consistently deliver very high fuel flow for high horsepower.

With twin fuel supply lines to the engine bay, each fuel line feeds its own billet aluminium fuel rail, thus eliminating any fuel flow restriction that would have been caused if a single shared fuel supply line was run at such a high horsepower level.

Attention to detail is a signature of APS systems and the APS Twin Pump Fuel Supply System is a perfect example of taking this desirable attribute to new heights. In order to ensure total peace of mind and leak-free operation, the fuel pressure regulator is specified with a DOWTY washer beneath the pressure set screw lock nut and another below the dome nut. This completely eliminates the possibility of even the slightest fuel leakage up the threads of the adjusting screw for zero fuel odor.

In order to deliver rock steady and constant fuel pressure at this high horsepower level, the fuel pressure regulator is boost referenced - which means that the fuel pressure differential across each injector face remains constant regardless of the operational boost pressure level. In other words, consistent fuel pressure is achieved whether decelerating (vacuum), cruise conditions (low boost pressure) right through to very high boost pressure levels commonly experienced at extreme power levels.

Boost pressure referenced fuel pressure also ensures that each of the eight drop-in Quad Orifice 84 lb/min (at 4 Bar fuel pressure) fuel injectors supplied in the APS Extreme fuel system operate to their full potential to deliver and sustain 1,000 horsepower of fuel flow the engine.

The APS Extreme fuel system is a complete bolt-on precision fuel system that consists of a comprehensive range of components designed specifically to support huge horsepower and yet retain excellent fuel atomisation, fuel economy and driveability in day to day driving conditions.

Being a full return fuel system, the APS Extreme Performance fuel system is engineered to return fuel to the APS drop-in surge tank via the stock fuel supply line (the stock fuel supply line now operates as the return fuel line). This takes advantage of the robust single fuel line configuration that has more than sufficient capacity under its new role as a fuel return line.

Each high capacity fuel pump is powered directly through a dedicated custom fuel pump power wiring loom that is supplied with the APS fuel system. This wiring loom is connected via a relay to a high capacity 12V power source. This ensures that the fuel pumps operate at the their absolute optimum and that there is no additional electrical load upon the stock fuel pump electrical circuit.

In addition, highly robust Teflon lined stainless steel braided fuel lines that are spiral wrapped are included with the APS Extreme Performance fuel system for straight forward installation and years of hassle-free high performance motoring.

The APS Extreme Performance Full Return fuel system delivers a huge volume of fuel at a rock steady fuel pressure that is balanced and boost referenced for the ultimate in fuel system performance on extreme horsepower GM LS7 engines.

The APS Extreme Performance fuel system is supplied complete with every nut, bolt, clamp and bracket required for easy installation.

APS Extreme Fuel System - Components
Model No.: APSCC6-FSS/06
Description: FUEL SUPPLY SYSTEM
Application: CHEVROLET C6 Z06 CORVETTE
Item
Part No.
Description
Qty.
1 740-076-000 RAIL - FUEL - LHS 1
2 740-076-200 RAIL - FUEL - RHS 1
3 740-076-100 BRACKET - FUEL RAIL MOUNTING 4
4 000-094-300 BOLT - B/H - 4mm x 0.7 x 20mm 12
5 000-631-100 ADAPTOR - ST. 9/16" JIC x 3/4" SAE 1
6 000-644 ADAPTOR - ST. 1/4 " NPTF x 3/4" SAE 3
7 000-483 O' RING 4
8 000-600 PLUG - 9/16" UNO (7237X6) 1
9 000-079-000 REGULATOR 1
10 740-073-000 BRACKET - REGULATOR MTG 1
11 000-659 ADAPTOR 90° 9/16"JIC X 1/4" NPT 2
12 000-609 ADAPTOR - ST. 9/16" UNO x 9/16 " JIC 2
13 000-679 TEE - 9/16"JIC RUN x 1/4" NPT BRANCH 1
14 000-241 NUT - CAP - 3/8" UNC 1
15 000-330-300 WASHER - DOWTY - 10mm 2
16 000-864-020 HOSE - FUEL INJECTION 3/8" x 8" 1
17 740-076-900 BRACKET - ENGINE COVER RETAINING - LHS 1
18 740-076-950 BRACKET - ENGINE COVER RETAINING - RHS 1
19 740-809-400 HOSE ASSEMBLY - REGULATOR - 6 x 14 45/45 1
20 000-224 CLIP - BODY - 6mm x 1.0 2
21 000-549 HOSE END - ST. QUICK CONNECT 2
22 000-557 BARB - 90º SWIVEL 9/16"JIC x 3/8" 2
23 740-809-000 HOSE ASSEMBLY - BALANCE - 6 x 11" ST. 90° 1
24 775-809-100 HOSE ASSEMBLY - FUEL -6 x 122" 90/ST. 1
25 775-809-200 HOSE ASSEMBLY - FUEL -6 x 110" 90/ST. 1
26 000-974-400 TEE-PIECE - 6.5mm x 6.5mm x 4mm 1
27 000-039 BOLT - B/H - 6mm x 1.0 x 20mm 2
28 000-828-120 HOSE - VACUUM - 4mm ID x 48" 1
29 775-073-100 BRACKET - FUEL LINE SUPPORT 3
30 000-995 CLAMP - HOSE SUPPORT - 20/15 4
31 000-003-100 BOLT - HEX 6mm x 1.0 x 20mm (SEMS) 7
32 000-204 NUT - NYLOC 6mm x 1.0 3
33 000-301-300 WASHER - FLAT 6mm 5
34 000-951-500 SCREW C/W WASHER YELLOW 1
35 000-987-178 TIE STRAP-NYLON 4.8mm x 178mm 15
36 000-864-038 HOSE - FUEL INJECTION 3/8" x 15" 1
37 000-429-038 SPIRAL WRAP x 15" 1
38 775-083-950 LOOM - RELAY/PLUG CONNECTOR 7 PIN 1
39 780-084-000 INJECTOR - FUEL 8
40 780-083-700 PLUG - WIRES - INJECTORS 8
41 000-469 O' RING - VITON 8
42 775-075-000 SURGE TANK/PUMP ASSEMBLY (39A-39S) 1
42A 775-073-900 MOUNTING ASSEMBLY - PUMPS 1
42B 000-077-400 PUMP - FUEL 2
42C 000-077-497 PLUG - FUEL PUMP 2
42D 000-077-999 FUEL FILTER 2
42E 000-077-495 CLIP - FILTER RETAINING 2
42F 000-077-498 ISOLATOR - FUEL PUMP 2
42G 000-854-017 HOSE - FUEL - INSIDE TANK 5/16" x 170mm 2
42H 000-607 ADAPTOR-ST 9/16"JIC x 1/4"NPT 3
42I 000-671 ADAPTOR - 90º1/8" NPT MALE x 1/8" NPT FEMALE 1
42J 775-083-925 LOOM - IN TANK/SOCKET BULKHEAD 7 PIN 1
42K 000-915 CLAMP - HOSE - FUEL INJ. No.13 4
42L 000-302-300 WASHER - FLAT - 8mm - S/S 1
42M 000-041-300 BOLT-B/H - 8mm x 1.25 x 12mm S/S 1
42N 000-215-300 NUT - NYLOC 3mm S/S 2
42O 000-355-300 WASHER - FLAT 3mm S/S 2
42P 000-1020-300 BOLT - S/H CAP SCREW 3mm x 0.5 x 16mm S/S 2
42Q 000-301-300 WASHER - FLAT 6mm S/S 1
42R 000-038-300 BOLT - B/H CAP SCREW 6mm x 1.0 x 12mm S/S 1
42S 000-310-300 WASHER - BODY 6mm x 16mm S/S 1