Switches or relays?

[steve ravet]

You want to switch the high voltage leads?  I doubt that's possible with
anything reasonably available.  Use coils designed for that (new
generation vortec truck engines are a possibility).  Search in the
archives for "coil near plug" or CNP for other possibilities.  You
switching idea has the additional problem of what does the switching?

--steve

Mark Bottorff wrote:
> 
> I have some ideas about using batch fire coil packs
> sequentially and using the Megasquirt for sequential
> EFI.
> 
> Coil packs:
> On my car ('88 Supra turbo) there are 3 sets of coil
> packs that fire 2 plugs at a time. There is a seperate
> connector for each coil pack. If I got another set of
> coil packs, and plugged the connectors into some sort
> of relay that would switch between coil packs as
> they're actived, it would fire one plug at a time. The
> problem is that there would be an empty spot for
> another plug wire. If I were to "Y" 2 plug wires
> together, would I get twice the spark, or that blow
> the coil packs?
> 
> Sequential EFI:
> Using the same sort of relay from above, but with 3
> outs and and one in (for a 6 cylinder), couldn't you
> make the Megasquirt fire one injector at a time?
> 
> Now the big question, does such a relay or switch
> exist?
> 
> Thanks,
> Mark Bottorff
> 
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-- 
Steve Ravet
steve.ravet at arm.com
ARM,Inc.
www.arm.com
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