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that cant be right, can it
 

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Heres some info I had save along time ago that mite help. :)

For n-Heptane @ 58 psi,
2003 Injectors - 359.4 g/min = 47.4 lb/hr = 524.7 cc/min
2004 Injectors - 395.3 g/min = 52.2 lb/hr = 577.1 cc/min

RC Engineering and most aftermarket injector companies flow their injectors at 43 psi. Using Bernoulli's equation, the mass flow can be corrected to:

For n-Heptane @ 43 psi,
2003 Injectors - 309.5 g/min = 40.8 lb/hr = 451.8 cc/min
2004 Injectors - 340.4 g/min = 44.9 lb/hr = 496.9 cc/min

If RC Engineering flowed our injectors with their test fluid @ 43 psi, they would rate the injectors as follows:

2003 Injectors - 343.3 g/min = 45.3 lb/hr
2004 Injectors - 377.6 g/min = 49.8 lb/hr

Basically injectors are volumetric flow devices, so a more dense fuel will flow more mass flow than a less dense fuel at the same volumetric flow rate. This is a very confusing subject. As you can see, it is very easy for a company to skew their flow ratings in their favor. There will always be some error in ratings until all injectors in question are flowed on the same test bench with the same test fluid at the same test pressure.
 
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BRUTE4Z
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