[Diy_efi] injecting 5 port head

[Phil]

positioning injectors near split/valves impossible; injectors need to be in 
runners;  we assume the problem lies in that
the pairs of cyls (1&2/, 3&4) are adjacent in firing order followed by 2 
rest periods, and that if injection was in that sequence it would resolve 
fuel distriibution anamly. Engine app is higly tuned short stroke Cooper "S" 
(sixties) BMC A series.  phil
----- Original Message ----- 
From: "Adam Wade" <espresso_doppio at yahoo.com>
To: <diy_efi at diy-efi.org>
Sent: Saturday, December 23, 2006 8:07 PM
Subject: Re: [Diy_efi] injecting 5 port head


> --- Phil <philhunt at comcast.net> wrote:
>
>> We think you'd need a sequential sytem
>> w/2injectors/runner.  Anybody on this?
>
> That sounds reasonable.  Is this the old MG inline 4?
> A lot would depend on port shape, I would think; if
> the split starts at the mating face for the manifold,
> it might take some trial and error regarding injection
> timing, but it should not be too much bother to get
> one injector per cylinder running without much
> "crosstalk" between cylinders.  If the split is an
> inch or more from the mating surface inside the head,
> this will become much more challenging, and you may
> wish to machine the head so that the injectors will
> fire directly into the port(s) after the split.  This
> may be techinically very difficult, and may also
> violate the class rules, depending on your racing org.
>
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