Switches or relays?

[Mark Bottorff]

They are made for firing it batches. I'm wanting to
make them fire one plug at a time by using 6 coil
packs and using 3 switches/relays. Like this:

||x|| ||x|| ||x||
\/ \/ \/ \/ \/ \/
|  |  |  |  |  |

The x's are the switches/relays. What I need to know
is if they is a relay or switch that accomodate this
setup. And if you can Y the 2 leads on each coil pack
together to one plug.

Thanks,
Mark Bottorff

--- Jim Blackwood <jblackwood5 at home.com> wrote:
> Normally you can use one coil to fire two plugs at
> the same time if they're
> made for it. The 'waste' spark is on the exhaust
> stroke.
> 
> -----Original Message-----
> From: owner-diy_efi at diy-efi.org
> [mailto:owner-diy_efi at diy-efi.org]On
> Behalf Of Mark Bottorff
> Sent: Thursday, November 08, 2001 1:52 PM
> To: diy_efi at diy-efi.org
> Subject: Switches or relays?
> 
> 
> 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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