injector manifold design

[Stowe, Ted-SEA]

I see, thanks.

that is a nasty problem, and yes it would be a lot of work to resolve. 
but I am wondering what is so different from the carb setup on it now. the
same problem must be there I think. ?

> -----Original Message-----
> From:	Mike Morrin [SMTP:mikem at southern.co.nz]
> Sent:	Monday, March 22, 1999 11:34 AM
> To:	diy_efi at efi332.eng.ohio-state.edu
> Subject:	RE: injector manifold design
> 
> At 07:15 am 22/03/99 -0800, Stowe, Ted-SEA wrote:
> >yes I wondered about that, but I was considering that since by design the
> >Bosch system fires all 4 injectors like a bank at a time, 2 big injectors
> >per port, both firing all the time, seems like it would have a lot of
> >overlap. I can't immediately see the value of having 4 injectors, which
> >would be physically hard to do with 2 intake ports, but 2 bigger ones
> >instead might logically work. ??
> 
> I don't know if you saw my meaning....
> 
> Looking at one of your ports, the firing order is something like
> 1-gap-gap-2-1-gap-gap-2.......
> Now if you are squirting fuel at 80% duty cycle, what is going to stop
> cylinder 2 from sucking in some of the fuel which was intended for
> cylinder 1?
> 
> You could go for a sort of modified-sequential injection, but you would
> then be limited to a 25% maximum duty cycle per cylinder, which would
> require timed injection, large injectors, and difficult idle control, not
> to mention custom ECU software.
> 
> regards,
> Mike
>