E85 and fuel pump / system

[Ghetto_CB7]

Hello all.

My fuel pump recently took a dump on me, and I am upgrading to a high flow one. I may be running e85 in the future, so I was wondering if anyone would recommend a pump.

I have heard both yes and no on the walbro's (with e85), but I am leaning in that direction.

Also what steps are recommended for the rest of the fuel system to cope with e85.


regards,

[F22Turbo702]

Bosch 044 fuel pump.

Walbro 255lph would be ok too, but I've seen a lot of them go out lately, seems like the quality has gone down in recent years and they just don't last.

-Kyle

[93F22A6]

I can't remember exactly what else but you'll need a tune def. New rubber lines, filter and that should be it. You might be able to get away without a tune but gas mileage would be horrible, you need a lot more fuel than you would with reg gas.

[Ghetto_CB7]

No tune...

No tune is a VERY BAD idea.

the stoichiometric ratio of ethanol is 9:1 not the 14.7:1

Using e85 drops the required a/f ratio, and requires A LOT more fuel. and when I say a lot, I mean like %30. I would not run e85 without a good tune!

I don't think that stock injectors will even have enough flow to keep up with e85 on an h22. I am running 410 cc's and expecting to be %70-%80 duty cycle.

and without e85 I am running a max of %47 duty cycle.

[riotstarter1992]

seeing as gas prices are suppose to go up to 4 dollars a gallon around here so i have been considering this convertion does any1 have an estimate on what it would cost do do this?

[cobratt03]

Good tune and good fuel pump and DSM450cc will do you good..But if ur gona do the e85 thing u might as well get a good cam and modify a couple thing to take advantage of e85. just my .02

[bruno8747]

Cant go wrong with a Bosch 044

[toycar]

Wally 255 in my opinion.

Ive never had an issue using one, I currently have 2 in one car, and 3 in 3 other cars all running decent amounts of fuel. The 30% rule is accurate, you'll need bigger injectors for sure.

[Phate]

I've got a set of DSM 390's that I originally bought when I pieced together my first turbo kit (that got sold). If I can score an SAFC or other decent piggyback, I'll probably screw around with E85.

[F22Turbo702]

I just found out that the Bosch 044 has been discontinued. However, a friend of mine has installed a few of the Deatsch Werks 300lph fuel pumps, they are in-tank like the Walbro, but pump the same volume as an 044.

[Ghetto_CB7]

Corn

I made the jump today, I just plan on keeping a close eye on it and replacing the fuel filter after a few tanks.

I am technically only on e75, because idaho doesn't get e85 until june, but I did a good base tune tonight and everything seems good. I haven't adjusted timing or leaned it out, but it felt much smoother than it did on 93.

I don't think it feels any faster yet, but like I said I didn't do much for performance tuning, and it is much safer.

Currently E75 here is $3.10, and premium 93 is 3:70, I obviously don't know mileage yet, but I will post it after I get a full tank without rodding the piss out of the car.

[toycar]

I made the jump today, I just plan on keeping a close eye on it and replacing the fuel filter after a few tanks.

I am technically only on e75, because idaho doesn't get e85 until june, but I did a good base tune tonight and everything seems good. I haven't adjusted timing or leaned it out, but it felt much smoother than it did on 93.

I don't think it feels any faster yet, but like I said I didn't do much for performance tuning, and it is much safer.

Currently E75 here is $3.10, and premium 93 is 3:70, I obviously don't know mileage yet, but I will post it after I get a full tank without rodding the piss out of the car.

Mileage will decrease by about 20-30% or so.


E85 is waay safer, good choice there.

[D1sclaimer]

I'm running E85 in my s2000.


I'm running 2 in-tank walbros and they work well with E85. I am also running -8AN feed and -8AN return fuel lines with an -8AN bore fuel rail to support the flow. You will also need bigger injectors for E85. Roughly 30-35% more fuel is used. My gas mileage while cruising and not getting on it is 22mpg. If I get on it, it obviously drops a decent amount depending on how much I beat on it.