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Ned's 7K Drop Hatch Starlet


Ned

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FreeEMS for life, yo! :-)

 

Not sure what Ned did driver wise, but I'd be very reluctant to run different driver setups on the same engine for different channels. No reason you couldn't hack it to add or swap a channel from LSD to 12v ignitor pre-driver, though if keen.

 

Semi-sequential/timed 2-shot batch is a nice way to run an engine without much thought/care, though. Idles smoother and happier than poorly timed sequential and is only sub optimal with boost and huge injectors, however even then it's fine.

 

Wasted spark is also fine, with the only down sides being setup time timing light woes and a ~15k practical rev limit. IE, non issues, for the most part. With 6 COP units you can simply run two from each output in wasted mode. The down side to this is twice as much heat load in the coil, or so the naive n00b might think. It's actually slightly worse, as the coil that's firing on the waste cycle into highly ionised exhaust gas is basically firing into a dead short, so will absorb more of the energy as heat. Nevertheless, this is generally fine if the dwell is dialed in correctly (a requirement anyway).

 

In summary, yes, you can run 6 cylinders with on/off VVT pretty well. With this hardware? Might require a slight hack to work 100% well.

 

Looking forward to seeing this board in the flesh and resurrecting my reflow oven :-)

 

Fred.

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Lols rusti, this is a purpose made hot plate, and there is a limit as to how long you should leave it on :-)

The most 'fun' bit is when you drop the board pulling it off the hot plate, because the solder is still liquid and all the parts fall off :-P

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