Walboro 340 question with large injectors....

[TwinTurboIroc]

i've done some searching and have noticed that at most a single 255liter pump will support enough fuel to low 11s or stretching it to high 10s before it becomes maxed out and that is also around the 125-127mph mark

what i didn't know while i've been searching is the size of the injector that most people are using.

I 83lb injectors and was curious if anyone could tell me if that will allow me to use the single 255 for a little more ET/mph. I planned on using the racetronix twin setup, but i dont think i'll need it this year and if i coud save the money and just ugrade next season it would free up some money to buy other things

thanks for any and all help

 

[86brick]

Don't know if this will help you, but........

I've heard that a single 340 Walbro fuel pump can support 700hp, but if you plan on making more than that I would definately look into something like the Racetronix twin setup.

 

[Turbo 6 Justin]

I am in the same boat I was palnning on going with the big Porsche pump but since my old 307 decided to get really weak at bowling green I just picked up a 340 and threw it in, since I wanted to play for the wekend. So now I am sitting here with a new 340 72's and wondering how the bigger injector effects the max fuel delivery. I would rather put the rest of the fuel system off till next year as I have enough safety and tech stuff to take care of this year, so those that have done it let us know.

Thanks

 

[TwinTurboIroc]

thanks for the suggestions......anyone else have any thoughts on the subject

 

[Chuck Leeper]

Max fuel?/

The size of the inj is not going to affect the performance of the pump.. Pump performance is affected by items such as line size, length, # of turns, fittings, voltage, pressure setting,etc. The pump will provide "X" flow under certain conditions and does not care if the fuel ends up in a bucket or is sprayed thru an inj...
I'd start w/ the HP you intend to make and "reverse engineer" the system back to the tank...