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Originally Posted by craig armstrong,Aug 1 2005, 06:47 AM
Damn those RX8s - Richard could have build up a test unit on an S2000 by now but its should like he continues to have problems with his RX8 mule
I may be looking at supercharging the car in 6-9 months' time and I was hoping the Axial supercharger would be tested and in production by then, not looking hopeful at the moment
Can't one of you US guys donate your S2000 to the cause?
What is the trouble with the RX-8? I haven't been keeping up on their board...
The Rx8 is suffering a strange dip of power at high-ish revs (6200 revs from memory) - its been plaguing the car since Richard got it and its holding up development
Despite the Problems Richard is Having with the 8 he is trargeting fitting and installing the AFSC on his car by the end of the month. No word if there will be a dyno run to show the deltas of HP/TQ.
He is having problems finding a system they would add the additional fuel based on pressure.
Richards design does not use the factory locations with larger injectors. The factory injectors stay in place so the Greddy chip would not work on this design.
The additional fuel (on boost only) will be added via a large injector in between the TB and the AFSC to allow the fuel to atomize fully as it passes through the SC creating a net cooling effect.
This makes the design easier to manufacture and install.
The combined efficiency of aerodynamic compression + the cooling effect of atomizing fuel makes it possible to remove the need for an aftercooler/intercooler. Again making the design simple and much easer to install all at the same time reducing the throttle volume.
A very simple Allen Bradley PLC could be programed to Control the fuel delevery. based on a MAP voltage.
This is the flow path the Richard will most likley be using on the S2000 if the blower is placed in front of the engine with a new intake tube to the current intake plentum.
Filter/ Throttel body would be placed in front of the inlet section to throttel the inlet air mass.
I'm curious if he has attained any sort of schedule for production. The reason I'm asking is that although he just started on this board, there's a thread on the rx8 board that goes forever.
It's seems like an awful long r&d time. I would think he'd have some answers by now on either to proceed or give up his project. If he's really into it, his costs by now must be substantial and the gain back can't be that great, there just aren't that many RX8's or S2000's out there.
My question is, is that his prototype in the picture? Or is it from something else and used as a comparison model. I hope he gets it done, it's an interesting project with a lot of potential benefits.
The pictures posted is the actual prototype unit that will be going on the RX-8.
The S2000 version with be similar if not exactly the same. The major hold up was problems Richard was having on his RX-8 and the dealership dragging there feet to get the problems fixed. Richard did a base dyno run of the RX-8 and found dips in the power graphs which showed he was having problems with the secondary valves that open up in the high RPM range. Richard originally wanted the RX-8 to be running exactly as it should before placing the prototype on the engine to ensure he would get accurate delta changes of the power added by the AFSC on a properly running engine.
I believe he is going to put the AFSC on despite the problems with the engine internals. Most of his time right now is going toward figuring out how to get the electronics package working correctly.
He should have prototyped on the S2000 due to the existing EMS all ready out there.
