Supercharged 440

[SPECTRO COATING CORP.]

Hi Simon - how are you?

Sorry this reply took so long - i had set your message aside to reply and
didn't seem to get to it.

My Fault.  anyway thanks for the advice. on your comment of using a 2 input
and gate - what kind do you have to use to handle the voltages present? do
you know?

Take care - Jason




> Hi Jason
>
> Sounds like a nice engine!
>
> > Rob at Force fuel injection told me that i better add enrichment fuel to
> > the top of the blower (roots have low efficiency you know) to provide
some
> > additional cooling so I'm working on that now.
>
> I have a EFI supercharged (roots) 2L pinto engine in my Capri.
> To fix the problem off charge heating I used a very simple DIY water
injection
> set up. It is a PWM 555 circuit controlling a windscreen washer pump
> that injects in to the TB, the water injector is mounted in the air
filter.
> The amount of water injected is adjustable on the dash.
> I just increased the water until the detonation stopped.
>
> The whole set up cost about US$25
>
> The only hassle with water injection is all the extra hardware like the
> water tank pump and plumbing.
>
> > I dunno how is the best way to drive the additional injectors though -
any
> > ideas on an inexpensive additional injector driver would be appreciated
>
> I forget who suggested it but the easy way is to use the pulse to the
injectors,
> feed the injector signal in to 1 input of a 2 input AND gate the other
input is
> controlled by a hobbs switch, the out put goes to an injector driver. This
way
> when the boost reaches the set point the extra injector comes on and it is
> triggered / controlled by the ECU.
>
> Cheers
> 
> Simon
>
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>   Simon Quested
>   Computer Engineer, Silicon Graphics & Windows NT Support
>   LINCOLN UNIVERSITY OF NEW ZEALAND
>   Phone (64)(03) 3252811 Ext. 8087
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> A person who smiles in the face of adversity
> .....probably has a scapegoat.
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>