Welcome to my latest project, the Spartan V8 prototype roadster.

Take a look around, and feel free to leave a comment!

What is it?
The Spartan V8 is a type of high performance car called an "exoskeleton" car, exoskeleton referring to the framework of the car which is both visible and aesthetic by design. It is being designed entirely from scratch, by me alone (constructed and tested entirely in SolidWorks). I'm about a year into the design; from initial idea, to working concept, to full 3d virtual model. Once I have the remainder of the crucial components (engine, transmission, suspension, etc) modeled accurately in 3D, I'll be able to finalize the design and begin construction.

What would it be like to drive?
Something like this.
The metallic click of a switch engages the ignition and fuel pump with a hum. You engage the clutch and push the starter button.. the V8 engine thrashes and bursts to life with a snarl, sending shivers through the frame, and straight up your spine. The shifter in your right hand snicks into gear, and you ease out the clutch and apply the throttle.. by the time you fully release the clutch, its already time to shift into second. As you shift to 3rd, 4th, 5th, and 6th, the sheer acceleration nails you to your seat, the exhaust roars to either side of you, the intake growls in front of you, the big 305 series tires shriek in protest as they claw at the pavement, the wind whips past your head and body, and you are catapulted to speed more rapidly than you thought possible.
A stab at the brakes invites the race compound pads to bite into four oversized vented rotors, rapidly bringing you to a screeching halt.. brutally throwing you forward against the belts of your 5 point harness, threatening to eject you from the cockpit as you slow back to a stop. Your pulse is racing, your breathing is quickened, and the back of your neck is tingling. Savage and raw, the Spartan V8 isn't just quick. It is downright terrifying.

More akin to riding something wild, overpowered, and foaming at the mouth than just driving a car. It roars, it screams, it snarls. It thrums with power lurking just under its thin skin, daring you to mash that accelerator to the floor, and chase down something exotic..

Why design and build your own car?
Why not? It will be fun to design, build, and drive. It will be a learning experience like no other. Also, because of it's tremendous power to weight ratio, the Spartan will be a veritable supercar - more than able to hold its own on the road or racetrack against other street cars costing hundreds of thousands of dollars.

Check back whenever you like, as I'll be adding updates frequently.


Tuesday, November 17, 2009

Truck Engine Harness

Received my engine harness and have begun to label all the connections.  This is the truck harness, which will be modified to work with the mixture of car and truck components on the Spartan's engine.  Alternatively, I may still switch to an actual LS1 harness, which would involve slightly fewer modifications.  Either way, there's a fair amount to be untangled..

I've made the leap to just redoing my current truck harness, repositioning the connectors and wires to suit the positioning of my engine and computer.  I depinned the PCM connectors and labeled each wire's position.  Next is stripping down the entire harness down to individual wires.  The connectors are all already labeled, so at that point I'll be able to remove the portions of the harness that I won't be using.

Each connector was separated out of the harness and coiled up.  Next I'll be eliminating any of the wiring that I can.  The pile in the upper left corner has already been eliminated.  I won't be needing any of the drive by wire, automatic transmission, four wheel drive, or air conditioning wiring.


  1. Jesse,

    Pretty sick project. I'm also a mechanical engineer and would like to help keep your project moving. I sell efi standalone harnesses. Check out our site psiconversion.com, we are also on ebay. I can provide a harness and pcm to run the 5.3 with the ls1 intake, injectors and throttle body.


  2. Set of 8 LQ4/LQ9 4.8 5.3 6.0 Delphi Injectors to LS1/LS6/LT1/Ev1 Wire Harness Adapters

    Set of 8 Ev1 / OBD1 Injector Plug Connector Pigtails

    Set of 8 LS1/LS6/LT1/EV1 Engine Wire Harness to LS2/LS3/LS7/LSA/Ev14/Ev6 Injector Adapters