dual 450 cfm TBI for 383 ci SBC

[rr]

It's not that easy. Remember that these are peak-n-hold injectors. . .

BobR.


don.broadus at exeloncorp.com wrote:

> They would have to be P channel MOS fets since the 747 drivers go to ground.
> put a 100 ohm or so load resistor on the the 747 output and the other end to
> +12 VDC. the P Channel MOSFET turns on when the 747 driver goes to ground.
> since P Channel FETS are hard to come by in high currents , It might be
> easier to use a inverter with a pull up and a N- Channel FET.
>
> Don
>
> > -----Original Message-----
> > From: Bruce Plecan [SMTP:nacelp at bright.net]
> > Sent: Monday, January 29, 2001 10:53 AM
> > To:   gmecm at diy-efi.org
> > Subject:      Re: dual 450 cfm TBI for 383 ci SBC
> >
> >
> > Stay tuned,
> > I got a new box here to try with some Honkin Power Mosfets in it.  Done
> > externally would be a min parts deal, just a good heatsink needed.   This
> > is
> > not intended as a daily driver deal, just a kludge to get the job done,
> > and
> > for off road purposes......
> > It should last with 6 TBI style injectors.
> > Just need some TBI injectors to risk.
> > My first, *bad deal* has left me with a TBI injector shortage.
> > If some one has 6 or so junk TBI injectors that they don't need (but
> > function electrically), that would help.  They and the box will run till
> > failure so they will be probably totally trashed....
> > Bruce
> >
> > > -> Other than building a driver box to control the 4 injectors, what
> > > -> kinks can people forsee?
> >
> > >  Can't you just use the output from the 747 to trigger a couple of
> > > Honkin' Big Transistors(tm)?  Or do you need to add extra stuff?
> >
> > --------------------------------------------------------------------------

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