On Wed, 25 Jan 2017 17:25:31 -0800, wrote:

On Wed, 25 Jan 2017 17:59:25 -0500, wrote:

On Wed, 25 Jan 2017 10:59:45 -0800, wrote:

On Tue, 24 Jan 2017 21:39:17 -0500, wrote:

On Tue, 24 Jan 2017 17:52:35 -0800, wrote:

On Tue, 24 Jan 2017 15:13:12 -0800, wrote:

I made up a little cylindrical reservoir that is pressurrized by a
piston. I tried the injector with some oil that was thicker than the
lube I intend to use. The result was oil that just dripped from the
injector. An online look at DIY injector service made me wonder if the
filter was restricting the flow so I removed the filter. Then, using
oil thinned to the approximate viscosity of the real lube, I tried the
injector again. It squirted pretty good at 30 PSI. The next thing to
address is the reservoir. I'm not sure if a piston sealed with an
O-ring is the best solution for applying pressure. There might be
stiction of the O-ring so that the piston may not move smoothly enough
causing erratic fluid delivery. An inflatable bladder would probably
work well but I have no idea where to get something like that. I'll
have to see if there is some sort of cup seal that would work better.
In any case I don't think it's a good idea to have the lube exposed to
the shop air, even though it's filtered, because there will always be
a little moisture in the air. When I need pristine air I do have a
nice refrigerated air drying system with particle filters but I don't
generally use it. The other thing I need to chnage is the spray
pattern. Not sure how that's gonna get done yet. Maybe just a
deflector slipped over the injector will work well enough and that's
my first option. I've got a 555 timer system running and I will be
weighing the oil squirted out once I have the pattern deal figured
out. Once that's done then the timing can be set. I'd like to have
some sort of knob to turn that has a linear relationship to the amount
of fluid delivered. So that a setting of 4 would be twice as much
fluid delivered as a setting of 2.
Eric
I know, it's bad form to reply to one's own post but there it is. The
nozzle idea didn't work. I had hoped the fluid would be coming out
with enough velocity to deflect and follow a new path. Instead the
nozzle just started to dribble. I watched the cylinder piston move
though and it moves pretty fast so O-ring seals may be OK. The
existing injector orifice plate holes must be drilled at an angle
because that's how the jets of fluid come out. The holes are about
.008" diameter so I'm thinking about trying to drill them straight
with a .012" diameter drill. Maybe if the drill bit is held so that
only about .05" is unsupported it will be stiff enough to avoid being
deflected too much by the existing holes as they are opened up. Maybe
I need to see if I can remove the orifice plate and replace it with
one of my own. Perhaps a large hole can be machined in the existing
orifice plate and a new one added directly on top that has a hole
pattern better suited to applying lube in a straight line.
Eric
Or perhaps you can locate an injector with a tighter spray pattern
from a different application.
It's hard finding the right pattern Clare, there are so many. I really
want a flat cone. Like a flat fan. The injector I have on hand does
not use a pintle, but I don't know what the internals are like, what
kind of valve it actually has. But I'm betting it has a needle valve,
as opposed to a disc like the Lucas injectors. It may be possible to
machine the orifice disc completely out and replace it with one of my
own design.
Eric
What make, model and engine is it from, or what is the number on it?
It's from an old Acura, 1980 someting vintage. I think. Anyway, here
are the numbers:
On the side with the + symbol near the connection-35310-23600
On the opposite side-9 260 930 013
The injector is an off white color.
The orifice disc has 4 holes in it.
There is also a symbol molded in that looks like the stylized H in an
oval that Hyundai uses. But I was told it came from an Acura.
Eric
The part number is for an injector from a Hyundai or Kia. Beta 2
engine and they are rated at 190cc. They apparently actually test at
196cc at 45psi.

You really want a Lucas style disc injector.

see: https://www.youtube.com/watch?v=7oTirEZNRw8

I think a 3.8L GM V6 is one source but they are twice the flow rate of
what you have.

BMW 325E would be closer to what you have but needs a ballast resistor
to run on 12 volts. (Low Impedence)
1.6 liter ford too - but those are not common in America.
Some 5.7 Chevys used them too. along with a lot of others.