Hi all,
I know everyone has anguished over injector flow rates at one time or another. I came across this website with actual flow rates for many, many injectors. I have no affiliation with this company, just a good reference.

http://www.witchhunter.com/injectordata1.htm

Enjoy!

 

Cool. However, it just says cc @ pressure. Is that cc per minute? Per hour? What's the conversion to lb/hr?

FYI: My SVO 30# injectors are part number 0280 150 945. That site says that they flow 312cc @ 43.5psi.

 

It's cc/min. This link has a calculator to convert from cc/min to lb/hr:

http://www.witchhunter.com/injectorcalc1.htm

 

theres a sticky in the fuel and injection section already for fuel injector calculator also, maybe post this in there and ask it to be a sticky also. but this is the same thing

https://ls1tech.com/forums/fueling-injection-8/

 

Thanks. 312cc/min = 29.714 lb/hr. I guess 30# is pretty close.

 

Close, yes but when calculating IFR tables you want to be as exact as possible.

 

Wouldn't it be more accurate to find out exactly how much your fuel weighs? And doesn't that depend on the type/octane and temperature?

'cause if I use 6.25 gal = 1 lb (assuming I'm using 87 octane at ~ 70°F), then the formula wouldn't be using a simple 1 lb/hr = 10.5 cc/min.
Instead it would be: Total cc/min = x (lb/hr) * 3785.4118 (cc) / 6.25 (gal/lb) * 60 (min)

Now, the weight isn't very accurate. Google isn't very accurate either it seems, but using those figures I get 1 lb/hr = 10.09 cc/min, or 30 lb/hr = 302.83 cc/min. Apparently premium gasoline is close to 6.35 gal = 1 lb, which is 298.06 cc/min for 30 lb/hr injectors... FYI, I'm finding everything from 6.0 gallons per 1 lb to 6.5 gallons per 1 lb of gasoline. I think I'm just going to fill up a gas can and weigh my own damn fuel for greatest accuracy.

Good thread though.

 

Injector delivery is really volume based and unless
you are using gasoline to test, the lb/hr would be
off (unless you correct for gasoline/reference fluid
densities). Most pros prefer to use the reference
fluid it seems (which does have very carefully
measured attributes).

 

We have always calculated, cc/min divided by 10.5 = Lb/Hr, to get close.