Re: Two barrel TBI must have a flaw, I give up.

[rr <RRauscher@nni.com>]

The reason I asked about the height above the manifold, is that
with a 2bbl, the air flow can slam into the bottom of the plenum.
(high velocity air stream).

It can help to space the tbi up a bit.

The air director things are important on the tbi's. Bruce has
covered this in detail, so I'll just brief it. Notice that a stock
tbi air cleaner has a metal ring the diameter of the tbi top.
This ring extends toward the top of the cleaner, with a gap
at the top. This forms the air-flow into a column that flows
down past the injectors, drawing the fuel with it.

Check out the basic stuff, take a deep breath, then start
over. The carb test was good, you can now concentrate
on the tbi.

Set the injector constant to 135, and adjust the VE tables
to suit. By-the-way, what ecm are you using?

BobR.


olbap wrote:

> At 07:44 AM 6/1/00 -0400, you wrote:
> >
> >Those numbers sound about right. Remember that they are 2-bbl numbers
> >at 3"hg, 4bbl's are rated at 1.5" hg.
> >
> >Not being able to look at the car, this can be tough. There are so many
> >little things that can get ya'. Like, are the throttle blades all the way open
> >when the go pedal is down? Do you have the 'air-directors' on the
> >tbi? How high off the manifold is the tbi?
> >
>
> Im pretty sure the throttle blades are opening up all the way, now the "air
> directors"  I dont know about, I probably call them those ----- thingies.
>
> The TBI is off the manifold mounting flange about 3/8 (because of the adapter)
>
> Played with the fuel some more tonight, held everything constant except for
> bpw as per a members reccomendation, i could get it really rich on the top
> but the power was just not there i mean it took a year to rev from 4000 to
> 5000 and the sound the engine was making was not pretty
>
> Pablo
>
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