Fuel Injector Clinic 1650cc High-Z Injector Set — Holley G and Ford

Fuel Injector Clinic 1650cc High-Z Injector Set — Holley G and Ford

Part Numbers: ISH01-1650H & PGTJETR8Q

The Fuel Injector Clinic ISH01-1650H is an eight-injector high-impedance set for Holley GM and Ford applications. FIC’s standard product configuration is ISH01-1650H & PGTJETR8Q, which includes eight Jetronic quick-release solder-in pigtails. FIC also offers EV1 and EV6 direct-connection configurations, plus a Multec II option using the PADPJtoGM8 plug-and-play adapter set.

Each injector is rated at 1650 cc/min and 160 lb/hr at FIC’s standard 3-bar test pressure of 43.5 psi. At the 4-bar / 58 psi reference pressure used by FIC for this application family, each injector is rated at approximately 1900 cc/min and 180 lb/hr.

Fuel Injector Clinic’s 1650cc high-impedance injector uses stainless-alloy valve construction and is compatible with pump gasoline, E85, Q16, VP Import, FTW, and other MTBE oxygenated race fuels. Its high-impedance architecture avoids the need for a separate peak-and-hold injector driver while retaining the short-pulse-width control required for stable idle and street drivability when the ECU is configured with the correct injector characterization data.

Each injector is individually numbered and the set is precisely flow matched to within 1 percent. FIC supplies a detailed flow sheet showing the results for each injector and publishes injector characterization data for supported ECU platforms.

Key Features

• Set of eight Fuel Injector Clinic high-impedance injectors
• Designed for Holley GM and Ford applications
• Standard FIC configuration: ISH01-1650H & PGTJETR8Q
• 1650 cc/min / 160 lb/hr per injector at 43.5 psi / 3 bar
• Approximately 1900 cc/min / 180 lb/hr per injector at 58 psi / 4 bar
• Saturated / high-impedance electrical design
• Standard configuration includes eight Jetronic quick-release solder-in pigtails, PGTJETR8Q
• EV1 direct-connection option available
• EV6 direct-connection option available
• Multec II harness option available using PADPJtoGM8 adapters
• Stainless-alloy valve construction
• Compatible with pump gasoline, E85, Q16, VP Import, FTW, and other MTBE oxygenated race fuels
• Precisely flow matched to within 1 percent
• Each injector individually numbered
• Detailed injector flow sheet included
• Short-pulse-width control intended to support stable idle and street drivability with correct ECU data
• Application-specific O-rings included
• Fuel Injector Clinic lifetime warranty against defects in original manufacture

Kit Includes

• Eight Fuel Injector Clinic 1650cc high-impedance injectors, ISH01-1650H
• Eight Jetronic quick-release solder-in pigtails, PGTJETR8Q, with the standard configuration
• Application-specific injector O-rings
• Detailed Fuel Injector Clinic injector flow sheet
• Access to applicable Fuel Injector Clinic injector characterization data

Technical Specifications

Flow and Test Conditions

• Nominal injector size: 1650 cc/min
• Flow at 43.5 psi / 3 bar: 1650 cc/min per injector
• Mass flow at 43.5 psi / 3 bar: 160 lb/hr per injector
• Flow at 58 psi / 4 bar: approximately 1900 cc/min per injector
• Mass flow at 58 psi / 4 bar: 180 lb/hr per injector
• FIC test pressure: 43.5 psi / 3 bar
• FIC test fuel temperature: 90°F
• FIC calibration fluid: CF-16B

Electrical and Mechanical Configuration

• Injector type: saturated / high impedance
• Quantity: eight injectors
• Application family: Holley GM and Ford
• Standard product code: ISH01-1650H & PGTJETR8Q
• Standard wiring configuration: eight Jetronic quick-release solder-in pigtails
• EV1 direct-connect configuration available
• EV6 direct-connect configuration available
• Multec II harness connection available using PADPJtoGM8 adapters
• Valve construction: stainless alloy
• Application-specific O-rings included

Fuel Compatibility

• Pump gasoline
• E85
• Q16
• VP Import
• FTW
• Other MTBE oxygenated racing fuels identified as compatible by Fuel Injector Clinic

Available Connector and Wiring Configurations

• Solder-In Pigtails — ISH01-1650H & PGTJETR8Q: FIC’s standard configuration. Includes eight Jetronic quick-release pigtails for replacing the existing injector connectors.
• EV1 Connector — Direct Connection: direct-connect configuration for harnesses already equipped with the matching EV1 connector.
• EV6 Connector — Direct Connection: direct-connect configuration for harnesses already equipped with the matching EV6 connector.
• Multec II Connector — ISH01-1650H & PADPJtoGM8: uses FIC’s plug-and-play adapter set to connect the injector set to the applicable GM/Delphi harness without cutting or soldering the vehicle wiring.

Application Notes

• Fuel Injector Clinic lists ISH01-1650H for Holley GM and Ford applications. This is an application-family listing rather than a vehicle-specific fitment, so injector connector choice should be matched to the engine harness being used.
• The 1650cc rating is measured at 43.5 psi / 3 bar. FIC rates the same injector at approximately 1900 cc/min and 180 lb/hr at 58 psi / 4 bar.
• Injector flow changes with differential fuel pressure. Fuel-system sizing should be based on actual regulated differential pressure, fuel type, target power, and injector duty cycle rather than the nominal 1650cc designation alone.
• The standard ISH01-1650H & PGTJETR8Q configuration requires replacing the existing injector plugs with the included solder-in pigtails.
• EV1 and EV6 direct-connect configurations eliminate pigtails when the engine harness already uses the matching connector.
• The Multec II option uses PADPJtoGM8 plug-and-play adapters rather than cutting or soldering the existing harness.
• Use FIC-supplied injector characterization data rather than generic flow or latency values.
• Fuel pumps, fuel-pressure regulator, fuel rails, filters, feed and return plumbing, ECU, ECU configuration, and tuning are not included.
• FIC supplies the O-rings required for the intended application family. Aftermarket or unusual fuel-rail and manifold combinations should be checked for injector fitment before ordering.
• This product is a port-fuel-injector set and is not a direct-injection injector replacement.

Emissions and Competition-Use Notice

Performance fuel-system modifications may affect vehicle emissions compliance and road-use legality. The purchaser and installer are responsible for determining that the completed vehicle complies with all applicable emissions, registration, fuel-system, and competition-use requirements.