Bigger fuel pump setup needed?
07-20-2016, 09:01 AM
#1
Bigger fuel pump setup needed? With my new top end setup, I am wondering if I will need to upgrade to an even bigger fuel pump setup now? Setup in sig, 385ci, E85 fuel, AFR LT4 210 Comp, 60# Siemens injectors, turning to 7k RPM. I am currently running a single Walbro 255 but am thinking I may need to go bigger to support the top end power and E85. Any suggestions?
07-21-2016, 10:05 AM
#4
You may need to upgrade by adding a second pump, but I think you will be ok.
The rating figures are very subjective.
To be sure add a pump, or stay as is an monitor fuel pressure and AFR.
If you are out of pump, you will see an almost linear leaning as you hit higher Rpms.
The rating figures are very subjective.
To be sure add a pump, or stay as is an monitor fuel pressure and AFR.
If you are out of pump, you will see an almost linear leaning as you hit higher Rpms.
07-21-2016, 11:10 AM
#6
You may need to upgrade by adding a second pump, but I think you will be ok.
The rating figures are very subjective.
To be sure add a pump, or stay as is an monitor fuel pressure and AFR.
If you are out of pump, you will see an almost linear leaning as you hit higher Rpms.
The rating figures are very subjective.
To be sure add a pump, or stay as is an monitor fuel pressure and AFR.
If you are out of pump, you will see an almost linear leaning as you hit higher Rpms.
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07-21-2016, 11:28 AM
#8
I do not, I have the regular 255 upgrade kit from Racetronix. I may just do what BOLO suggested and go with the 340 and hotwire kit just to make sure I'm good on fueling. I already have the trap door setup so it shouldn't be to big of a deal to swap it out again.
07-30-2016, 10:07 AM
#10
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One really good option is the walbro 450 e85 pump and a Hotwire kit. Supposed to draw a little less amperage than a 255 due to a better motor, but obviously much more fuel.