Hows everyone doing today???

Here's the deal

I have a 340 whp evo 9

Full AMS exhaust
AMS intercooler
AMS Upper and lower intercooler piping
perrin intake
255 Walboro
and a tune right now

Within the next two months I plan on buying an FP Red, 1250 Injectors and switching to e85 and heading to my amazing tuner (E-Spec Industries in Long Island) shooting for 450whp- 500whp


My question is.... I need a fuel pump that will pump out enough gas whether its e85 or 93 octane because e85 is 30 miles from my house. I might need to put in 93 once in a blue moon. But we all know e85 gives a TON of whp.

appreciate the help in advance!!!!!!

 

Did you search? Why did you post in a FS section?

http://lmgtfy.com/?q=site%3Aforums.e...+e85+fuel+pump

 

You 'might' be just fine with your current Walbro.

I have a dual tune on my IX RS. 443awhp on a dynapack and E85. I run a tank of 91 octane through every two months to help clean it out (if that even matters).

I've had my Walbro255 and 1000RC injectors in for 3 years...no issues.

Good luck!
Erik

 

What does your tuner say about your question? I would ask for his thoughts about it because he's the one doing the work.

 

So you are on LI probably out east suffolk if E85 a 30min drive. There are 7 E85 within 5-15 minutes from where I'm ... a quick easy search would have solved this for you... Walbro 450lph E85 pump if you want a bigger pump. Change your fuel filter also when you go E85. It won't be a direct bolt in to the fuel sender, there are guides on how to install it.

http://www.extremepsi.com/store/prod...at=1851&page=1



~~here a little knowledge on fueling~~


Naturally aspirated engines are normally most efficient with a BSFC between .4 and .5 lbs/hp/hr.
· Nitrous combinations use a little extra fuel and often develop a BSFC from .5 to .6 lbs/hp/hr.
· Forced induction engines are usually least efficient and BSFC ranges from .6 to .75 lbs/hp/hr.
Using 650 HP, let’s figure the fuel requirement for the most vs. the least efficient engine combination.
· 650 HP multiplied by a .4 BSFC equals 260 lbs of gasoline.
· 650 HP multiplied by a .75 BSFC equals 487 lbs of gasoline.
As you can see, the amount of fuel required to support two different engines, each making the identical amount of HP but with very different fuel efficiency, virtually doubles the volume of fuel required!
Note: It is equally important to consider BSFC when determining minimum injector size. To calculate, divide the lbs of gasoline required by the number of injectors used. If you are estimating, it pays to be safe. Many engine builders will add a percentage to total fuel pump volume for safety and then divide the minimum injector by .8 in order to target about 80% injector duty cycle. This allows consistent injector performance, cooler operation for enhanced durability and leaves about 10% for unexpected power.
For example:
· 650HPx.4 = 260lbs. 260lbs/8 injectors=33lbs (346.5cc)/hr. 33/.8=41lb (430.5cc)/hr injector @ 80% duty cycle.
· 650HPx.75=487lbs. 487lbs/8 injectors=61lbs (640.5cc)/hr. 61/.8=76lbs (798cc)/hr injector @ 80% duty cycle.

you do not need a pump that big for the horsepower you are looking to achieve. A normal walbro 255lph hp rewired is enough for you. Below will be how much airflow the walbro 255lph hp can handle based on what PSI you are running.

Walboro 255lph HP

10psi = 64.64lbs/min
11psi = 64.19lbs/min
12psi = 63.74lbs/min
13psi = 63.30lbs/min
14psi = 62.86lbs/min
15psi = 62.42lbs/min
16psi = 61.99lbs/min
17psi = 61.56lbs/min
18psi = 61.13lbs/min
19psi = 60.71lbs/min
20psi = 60.29lbs/min
21psi = 59.87lbs/min
22psi = 59.46lbs/min
23psi = 59.05lbs/min
24psi = 58.64lbs/min
25psi = 58.24lbs/min

Walboro 255lph HP (Rewired)

10psi = 74.29lbs/min
11psi = 73.86lbs/min
12psi = 73.43lbs/min
13psi = 73.01lbs/min
14psi = 72.58lbs/min
15psi = 72.15lbs/min
16psi = 71.72lbs/min
17psi = 71.28lbs/min
18psi = 70.85lbs/min
19psi = 70.42lbs/min
20psi = 69.99lbs/min
21psi = 69.55lbs/min
22psi = 69.12lbs/min
23psi = 68.68lbs/min
24psi = 68.24lbs/min
25psi = 67.80lbs/min

Taken from http://www.dsmtuners.com/forums/151048611-post1.html

 

Walbro 255 pumps are not designed to work with alcohol fuels and running E85 will eventually kill them. Many people, myself included, have got years of life out of a 255 on E85 but they seem to be inconsistent; I've seen several that have failed quite quickly on E85.

You're better off spending just a little extra and getting the AEM 320lph E85 compatible pump (AEM p/n 30-1200, $120 typically). It's the same size as the Walbro 255, but flows 320lph and is fully alcohol compatible. Just be sure to upgrade the wiring to the fuel pump, as you always should when installing a higher flow pump.

 

Alcohol fuel does not damage the pump itself but corrodes away the electrical wiring. That is the only difference from an E85 compatible pump to a normal fuel pump. They just seal the electrical connections. I've the same experience as you 99eclipsegsx, I've been running E85 on my wally for about 3 years on my gsx no problems, plus a handful of other cars that I've tuned, even if I suggested getting a E85 compatible pump and they did not, sticking with there 255lph.

 

people neglect to consider the the fuel supply line becomes a restriction a high fuel flow rates. a walbro 255 on stock wiring is at its safe limit at 450 whp. i've got fuel pressure logs to prove it. i doubt a rewire would make it a 500 whp pump. a walbro 416 is a better bet to safely support 500 whp.

 

Ive run pump fuel and e85 on my fuelab42401 pump and have had no issues.

 

If that's true of some manufacturer's pumps, that's pretty disappointing! The AEM E85 fuel pump not only has the sealed connectors, but all the internals are made of different materials to handle alcohol fuels. It's completely different internally. Even with sealed connections during testing it was found that "other" fuel pumps which are not designed specifically with alcohol would wear prematurely when run with alcohol fuels. Eventually the pump will eat itself up.