audifreakjim wrote:my2000apb wrote:with regards to the soon to be new found hp, where does the single 044 start to run of of flow?
Figure at 750 hp, I will need 5 injectors running around 850cc/min. That equates to 255 Liters per hour. 034 has the pump rated at 265Lt/Hr @ 55lbs and 255Lt/Hr @ 75lbs
So yes it is right on the limit, but at 600 whp I should still have a little head room.
Bench racing is fun!
Big Jim,
It may be a hassle, but run E85, it's worth it!! Your engine will be very happy, run cooler, never knock, your plugs will get cleaned off and you won't have to run water injection.
The other bonus is, your car will smell like a moonshine still!!!
From an SAE paper on different alcohol blends, you will make more power as well:
Thus, with increasing ethanol content, both power and
thermal efficiency increase simultaneously. This effect has
been noted previously on both engine studies [14] and vehicle
studies [15], but while the trend is consistent, it is not fully
understood. One contributing factor to the increased power is
a charge cooling effect, which increases volumetric
efficiency. The average normalized air flow for each of the
fuels across all operating points is shown in Figure 9. The
airflow for E85 increases about 2% compared to RG, and E50
air flow increases about 1.5%. The increased air flow can be
attributed to a charge cooling effect with ethanol due to its
higher latent heat of vaporization (919 kJ/kg for chemically
pure ethanol, and as 350 kJ/kg for typical gasoline[16]). The
mechanism of the charge cooling effect is that when fuel is
sprayed into the intake air charge of an engine, the heat
needed to vaporize the fuel must be extracted, at least
partially, from the air, reducing the specific volume of the
intake charge. This is particularly true in an engine with DI
fueling, where the fuel has less interaction with the hot
engine surfaces in the intake manifold. Since the latent heat
of vaporization is significantly higher for ethanol, it is more
effective at cooling the intake charge than gasoline.
