Tri-Power TBI

[andy quaas]

If you used 3 small tbi's, you should get good throttle-response.  No
need for secondaries/primaries.

Andy

---Gary Derian <gderian at cybergate.net> wrote:
>
> It seems to me that a tri-power TBI setup would work OK at WOT or
center
> unit only but getting a good fuel distribution during the transition
would
> be very difficult.  How is the ECM to know what the air flow
distribution is
> between the three TBIs?  A small change in throttle linkage would
throw it
> off.  If all 3 were the same size and worked together at all times, a
> reasonable approximation would be to inject an equal amount of fuel
into
> each.
> 
> Gary Derian <gderian at cybergate.net>
> 
> >> >
> >> > >I have a 65 tri power manifold that I was thinking about using
for
> EFI. It
> >> > >has the small center carb and big outer carbs
> >> >
> >> > I hope it sounds as neat as the tri powers did!!! I think all
they did
> for
> >> > the bigger center carb (same size as the end ones) was bore out
the
> >> > throttle holes larger for the center carb ('66 ??)
> >> >
> >> > SOMEBODY is making adapters that will get you from a Rochester
base to
> a
> >> > Holley base (2 bbl). Have to search the memory banks!! :-)
> >> >
> >> tri powers had bigger end carbs and a small centre
> >>
> >> Clive
> >Just like any 4 bbl - small primaries for good idle and low speed
> >economy, BIG secondaries to tear the tires off when you mash it!!
> 
> 

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