Harrop 2300 Supercharger

Harrop 2300 Twin Helix Supercharger

Harrop 2300 Twin Helix Supercharger

We obtained the LQ9 FI Shortblock from Texas Speed with the full intention of putting an 88-94 mm Borg Warner Turbocharger on it. Loyd Mead purchased a Harrop 2300 Supercharger kit and put it on his 2004 GTO. It was one of the cleanest installs I had seen and the kit was very well put together. I immediately got interested in the Harrop and we bought a complete kit, New in the Box.

The LQ9 was not the average platform they had considered for the Harrop so we initially had to fabricate quite a few solutions to make everything fit. First, the coolant tanks were engineered to0 sit on the passenger side, as that is the driver’s side in Australia where they are made and sold. Steve fabricated a larger capacity reservoir to sit on the driver’s side fender.
That required us to move to an aftermarket overflow tank and to relocate the CPU from the drivers side inner fender (wheel well) to the interior of the car. Beyond that fabrication of a custom exhaust and heat shield were required for the Cold Air Intake.

OEM CPU location for 2004 GTO, Driver's side inner fender

OEM CPU location for 2004 GTO, Driver’s side inner fender

Free space after CPU Relocate

Free space after CPU Relocate

Key to the mod is to feed the wiring back through the dash

Key to the mod is to feed the wiring back through the dash

Profanity helps immeasurably, as a motivator

Profanity helps immeasurably, as a motivator

CPU on inside of cab kick panel.CPU on inside of cab kick panel.Another view of relocated CPU

Another view of relocated CPU

We also switched from a 2004 radiator to a 2005 radiator. The advantages were the overflow plumbing, the routing of the hoses, and the 2005 had gfreater capacity and also had the drain plugs.

2005 GTO Radiator

2005 GTO Radiator

OEM Coolant Reservoir on Driver's Fender

OEM Coolant Reservoir on Driver’s Fender

Fabricated Coolant Reservoir replacing 04 overflow tank

Fabricated Coolant Reservoir replacing 04 overflow tank

New in Box Harrop 2300

New in Box Harrop 2300

Cog Drive Kit installed from the factory

Cog Drive Kit installed from the factory

8 rib Damper

8 rib Damper

We used Siemens 80 lbs injectors

We used Siemens 80 lbs injectors

Overdriven COG

Overdriven COG

Innovative West 8 Rib belt kit, including  overdriven damper

Innovative West 8 Rib belt kit, including overdriven damper

More of the IW 8 Rib Kit

More of the IW 8 Rib Kit

Looking up the ports at the intercooler

Looking up the ports at the intercooler

Torquing her down

Torquing her down

http://i512.photobucket.com/albums/t327/wrpnEthyl/Mods/Turbo%20Whistle/Supercharger/SANY0047.jpg

90 mm TB on the Harrop

West 8 Rib Kit Installed

Innovative West 8 Rib Kit Installed

Smallest drive pully we could find

Smallest drive pulley we could find

Wrapping the belts was the final chore

Wrapping the belts was the final chore

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