mrfred

iTrader: (50)

With the need for 1000 cc/min injectors and a Walbro fuel pump, it seems that E85 requires very high fuel flow volume. Is there any need to upgrade to a larger volume fuel rail to deal with the pressure drop across the fuel rail when 1000 cc/min injectors are operating at 100% duty cycle?

[EVO]Cookie

iTrader: (3)

I changed the fuel rail to reduce lean conditions cased by the small bore of the stock rail. Also the fuel pressure regulator so I have the proper pressure for my injectors because it's a math calculation on fuel pressure. I replaced the full fuel line to 3/8 methanol braided fuel line.

mrfred

iTrader: (50)

Did you replace both the high pressure and the return line? And for whichever/both, you replaced the entire line between the fuel rail and the gas tank?

[EVO]Cookie

iTrader: (3)

All the lines.

[EVO]Cookie

iTrader: (3)

I"m using the 100PSI fuel hose. I thing stock lines are 50PSI but I cant remember right now.

mrfred

iTrader: (50)

How much hassle was that? Where did you buy the lines?

[EVO]Cookie

iTrader: (3)

You also need to bump up the fuel pressure about 10% for E85 due to the fuel density difference. I use 45PSI at the FPR at idle with a 1:1 rising rate on 93 and almost 50PSI with E85. 1000 cc injectors.

[EVO]Cookie

iTrader: (3)

It's no hassle to me better safe than sorry. I purchased the lines from a Race shop near where I work. They are Aeroquip lines.

[EVO]Cookie

iTrader: (3)

I don't think the Evo metal fuel line are nickle plated which means they will corrode over time. I open my tank up every year to check for corrosion.

Turbojunkie

iTrader: (21)

all of that so far had been proven unnecessary.

mrfred

iTrader: (50)

The hole in stock fuel rail is not very large diameter. I'd be interested in seeing any documentation showing a minimal fuel pressure drop across the fuel rail at high IDCs with 1000 cc/min injectors.

[EVO]Cookie

iTrader: (3)

Proven to you maybe but not me. I don't like to take chance especially when fuel component failure can result in fire.

[EVO]Cookie

iTrader: (3)

stock rail bore is .192 and I have the Perrin .632

frenchy99

iTrader: (6)

You make a good point. Better fuel flow= more consistent power, better spark, just to name a few.

While you are at it, upgrade to a 65mm tb.

Billy@EnglishRacing

iTrader: (18)

it is not needed