[Land-speed] Fuel Injector testing

[Meierle, Michael D (Mike)]

Mayf,

Apparently there is a certified fluid used for testing, and is specifically
manufactured for testing injectors.

http://www.cruzinperformance.com/injsteps.html

Bout halfway down the page. Is a pix of ASTM Spec's and such.

Maybe you should just send them to these guys?

Mike Meierle
#847 F/BMMP
Gear Grinders/Sidewinders
SCTA-BNI/ECTA
ECTA Record Holder/Bonneville Record Holder


-----Original Message-----
From: land-speed-bounces at autox.team.net
[mailto:land-speed-bounces at autox.team.net] On Behalf Of drmayf
Sent: Monday, May 10, 2010 9:57 AM
To: Kirkwood
Cc: land-speed at autox.team.net
Subject: Re: [Land-speed] Fuel Injector testing

Well, this wasn't meant tobe  a thesis paper or major effort to
understand injectors. I simply want the closest in physical properties,
to gasoline, non flamable fluid I can find. Why? So I don't have to go
into a major research effort. I am no chemist, but the minimal data I
looked at seems to indicate that long chain molecules are thicker than
short chain ones. That would indicate that molecular weight is higher?
Also, it appeared that density for long chains was higher than short
chains for organic molecules.   I simply want that fluid so I do not
have to do a lot of research.  I really do not give a hoot about having
a  wealth of knowledge about some fluid other than it will work.
Stoddard solvent is on  my list of those to check out.  To me, the most
important items are "will it flow similarly to gasoline and not blow up
in my face if ignited".  These two fluids are used as gasoline simulants
so they are on my list to check: viscor 16a and 16b.

So you are probably wondering why I want to do this. Well, every
injector is off a tad from its brothers.  If I can get egt measurements
from each cylinder at full bogie, then I know that the cylinder mixture
is leaner or richer depending on temperature (rule of thumb). If it was
hotter by a few percent then I might select an injector that flows a tad
more and put it in that position. So I need to understand the injector
flow at full boost and full rpm. And I need to use the hardware that is
on the car because that affects it all as well. And so on. Seems to me
that would be optimimun. Individual AFR sensors would work also, but
that seems a bit expensive. Anyway, that's why I am considering this. My
speed secret (soleful sigh..tongue in cheek) is out.....

mayf