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You don’t mean RS200 do you?blade7 wrote: Fri Dec 20, 2024 2:08 pm Cosworth fitted an 8 injector inlet on the 87 homologation Ford Sierra RS500 Cosworth. The 500 road cars didn't come with the ECU to run all 8 injectors though. So the RS500 road cars only ran 4 of the 8 injectors, the same as the standard Sierra RS Cosworth.
You learned me something new with Kinsler.michaelmount123 wrote: Fri Dec 20, 2024 10:20 am Re the dual injectors: Porsche developed the engine back in the mid-1980's, some 40 years ago. At the time there were no large injectors available for motorsports. So what to do? Andial chose to run two 951 injectors off the Porsche shelf. It's currently set up to run both injectors simultaneously, and it does run sequentially as a 4 cylinder. The fuel rail is a custom piece to accommodate the dual injectors and the intake manifolds have been (beautifully) modified as well.
As an aside, the first generation 944GTR engine was developed by McLaren and used mechanical injection. The engine was deemed 'not ready' due to durability issues. Andial then took over engine development and converted to electronic engine control using a modified 962 Bosch ECU. They found the power and had success with the very early electronics. We're using MoTec due to the stability and capability of today's ECU's. Anyone notice the Kinsler DBW throttle actuator?
No, the RS200 is a completely different car.gruhsy wrote: Sat Dec 21, 2024 2:03 pmYou don’t mean RS200 do you?blade7 wrote: Fri Dec 20, 2024 2:08 pm Cosworth fitted an 8 injector inlet on the 87 homologation Ford Sierra RS500 Cosworth. The 500 road cars didn't come with the ECU to run all 8 injectors though. So the RS500 road cars only ran 4 of the 8 injectors, the same as the standard Sierra RS Cosworth.
With the 1.8L and 2.137L
Yes, Chris, tuning a turbo engine with ITB's is not common nor straight forward. The mapping is based on Alpha-N, (3D) but also references boost from the plenum resulting in 4D mapping. Smart people, these ECU geeks! We hope to be back on the dyno early in January. Still lots to do with the car.chris white wrote: Fri Dec 20, 2024 12:29 pm I looked over this car at the WGI Historic Races last summer (it was not running well). I couldn't figure out how it would run well with the MAP sensor on the plenum before the throttle bodies. I couldn't see any MAP sensor connections after the throttle bodies....kind of hard to tune (unless I was missing something)
michaelmount123 wrote: Sun Jan 05, 2025 3:22 pm GTR Engine.jpg
The engine is back in the car. Cleaned up a lot of things, and hope to be on the dyno this week.
