Injector mounting in manifold.

[Ben Swann]

Huw, et al.

I have no question that the CSV is not what is needed to do the job, but no
harm in asking.  If it can't be pulsed like a normal EFI and made to run
continuously only then that is the answer.  It would be nice to have the
specs - like opening time, closing time and what frequency it can be pulsed
at., but I think the upshot is not good enough to perform the duty required.

So my question followed - what injector fits in the same space that does the
EFI job.  Needs to have a nozzle the same size - around 7mm, and have a
mounting flange similar to the CSV.  I think if I find this injector, then
it will be a simple matter to provide supplementatry injection to the MC
engines, without designing special flanges, fittings, hoses, etc.

At this point we assume:

1) CSV wont perform the duty cycle required.

2) Injector needs to be located before the throttle body and the intake air
temp sensor at the top of the intercooler outlet would be an ideal location,
if a suitable injector can be found.

Ben
----- Original Message ----- 
From: "Huw Powell" <audi at humanspeakers.com>
To: "Ben Swann" <benswann at comcast.net>
Cc: "Quattro list" <quattro at audifans.com>
Sent: Wednesday, April 07, 2004 2:12 PM
Subject: Re: Injector mounting in manifold.


>
> > I understand what you are saying, that the fuel may miss the number one
> > runner.  Has anyone confirmed this, or is it just speculation.  After
> > looking at this, it appears that the fuel would reach the number one
just
> > fine, as the injector would be in position before that, but I wouldn't
argue
> > with some BTDT.
>
> Back in the day, whenever someone asked abou using the CSV as an
> auxiliary fuel source, there seemed to always be a chorus of expert
> opinion saying "don't do it."  Part of the argument was the unequal
> distribution of the fuel to the cylinders, the other part was that the
> CSV is very crude, and does not make a nice atomized fuel pattern.
>
> Reading your note above, it just seems wrong.  You are going to use it
> at the time that the engine is most "sensitive," ie, you need the extra
> fuel to make sure you don't get detonation at high boost.  Meaning you
> *really* need to make sure it will work properly, and not leave any
> cylinder lean at any time.
>
> To me, I'd be much more worried about the speculation that it *will*
> work than that it won't.
>
> I'd be tempted to say there is no harm in trying, except that there
> could be.  You'll have no way to tell if any one cylinder is getting
> stressed, and could end up with a broken engine.
>
> -- 
> Huw Powell
>
> http://www.humanspeakers.com/audi
>
> http://www.humanthoughts.org/