Aftermarket Industries SPR400V2 Surge Tank 0.66 Gallon Without Fuel Pumps for Bosch BR540 DW400 Walbro F90000274/285

SPR400 V2 Surge Tank Special Features

Single Fuel Pump Port

• 8AN fuel fuel ports

• Perfect fuel pressure control

• Staged fuel pump operation

• Superior fuel pressure stability due to our design protected 3-to-1 fuel pump manifold

Plug & Play

• The SRP400 V2 features the Aftermarket Industries 6 way (30A per pin) Plug & Play electrical connector to allow independent control of up to three fuel pumps.

Bio-Fuel Compatible

• Zero fuel vapour loss

• Zero fuel smell GUARANTEED due to anodising process

• Unleaded, Ethanol, C16

Capacity

• 2.5 Litres or 0.66 Gallons

Engineering

• Precision machined from aerospace grade 6061-T6 billet aluminum, designed using best practice engineering principles and stress tested to ensure maximum safety for all motorsport applications

• Plug & Play 6 way (30 amp per pin) electrical connector - independently stage fuel pump operation for 1-3 fuel pumps.

Compatible Fuel Pumps

• Walbro 255

• Walbro 460 F90000267 F90000274

• Walbro 520 / 525 F90000285

• Bosch BR540 (RECOMMENDED) (Also known as the DW400)

Wiring Guidelines: Required For WARRANTY

Fuel Pump Qty	Main Power Wire	Fuel Pump Power Wire	Relay Wire Size	Relay Size	Fuel Pump Circuit Breaker
Single Pump	10 AWG Tefzel Mil-Spec 22759/34	10 AWG Tefzel Mil-Spec 22759/34	16 AWG Tefzel Mil-Spec 22759/16	35A-50A	25A-30A Circuit Breaker or Fuse
Twin Pump	4-6 AWG Main Wire Tefzel Mil-Spec 22759/16 (50A-60A Breaker/Fuse)	10 AWG Tefzel Mil-Spec 22759/34	16 AWG Tefzel Mil-Spec 22759/16	50A	25A-30A Circuit Breaker or Fuse
Triple Pump	4 AWG Main Wire Tefzel Mil-Spec 22759/16 (80A Circuit Breaker/Fuse)	10 AWG Tefzel Mil-Spec 22759/34	16 AWG Tefzel Mil-Spec 22759/16	50A	25A-30A Circuit Breaker or Fuse

• Electrical Wire & Circuit Size Formula
  • Circuit Breaker/Fuse Size: 125% (1.25x) total Peak Current (Amps)
    • Circuit Breaker/Fuse must NOT exceed wire current rating
  • Wire Size: 150% (1.5x) total Peak Current (Amps)
  • Relay Size: 225% (2.25x) total Peak Current (Amps)

*Fuel Pumps are NOT included in this package

SPR400 V2 Surge Tank Power Support Guidelines

Fuel Pump	Power HP (Ethanol)	Power HP (Unleaded & C16)	Base Fuel Pressure* (PSI)	Total Fuel Pressure** (PSI)	Voltage*** (v)
1x Walbro 460	500	600	40*	70	13.5v-14v
1x Walbro 520/525 & Bosch B540	650	700	40*	70	13.5v-14v
2x Walbro 460	850	1000	40*	75	13.5v-14v
2x Walbro 520/525 & Bosch BR540	1200	1300	40*	75	13.5v-14v
3x Walbro 460	1400	1500	40*	80	13.5v-14v
3x Walbro 520/525 & Bosch BR540	1500	1600	40*	80	13.5v-14v

*BASE FUEL PRESSURE MUST BE SET @ FIGURES STATED OR LOWER TO ACHIEVE HORSEPOWER TARGET

(Recommended Fuel Injector: Bosch Motorsport 1650cc)

**Maximum Peak Fuel Pressure (Base Pressure + Boost Pressure)

***Maximum Voltage

Rotary Engine: Reduce Horsepower HP Support Figures by 30%

Add a Fuel Bulkhead Fitting (Sold Separately): A major issue with any aftermarket fuel system is a pressurised overflow from the surge tank back to the OEM fuel tank. A common mistake is the use of adapters;the OEM return in ALL instances is far too small and MUST be modified to ensure the fuel flows freely from the surge tank back into the OEM fuel pump module. We've now developed a super flow profile -8AN fuel bulkhead fitting to address any potential issues part number BULKHEAD8AN. Simply cut a small 20mm hole in the OEM module and secure the bulkhead fitting.

Additional Applications:

• Universal