What size injectors do I need for E85?

1000cc minimum is what I suggest for E85. 1300 is overkill on these cars with proper fueling but can be done if you want to.

Do I need bigger injectors for E85?

But because E85 requires much more fuel volume, you’ll also need to upgrade your fuel system too. But you’ll need at least bigger injectors to handle that fuel volume, and custom tuning to deal with the new squirters (see “E85 Tuning” sidebar below).

How do I know what size injectors I need?

An injector this size can also provide an accurate amount of fuel at low rpm. For example, a naturally aspirated, 300 hp engine (BSFC 0.5), with 8 injectors will need 23.4 lbs./hr. of fuel per injector at an 80% (0.8) duty cycle. (300 X 0.5) ÷ (8 X 0.8) = 23.4 lbs./hr.

Can any injectors run E85?

The fuel system must be designed to deliver more fuel. Every part of the system needs to be alcohol compatible. The Fuel Injectors and The Fuel Pump need to be compatible with E85 and sized to deliver more fuel.

Is E85 hard on injectors?

E85 fuels are hygroscopic That translates into a short storage and tank life because its prone to absorb moisture from the air. It also means that depending on how long the gas stays in your tank or the humidity level of your geographic area, you can experience poor performance and even problems with fuel injectors.

Can I run E85 in my race car?

The E85 value is much less fuel for the amount of air than the methanol value. A reduced quantity of E85 is necessary to run a race engine previously set up for methanol. However, fuel curves should be well developed on E85 before turning up the spark advance or compression; or the boost in a blown engine.

What’s the difference between gasoline and E85 injectors?

Gasoline is 14.7 and E85 is 10.0 Now that you have the “magical” factor and your base injector size, do the math. I will do one with you just to show an example. Let’s say that in the Injector size selection guide size calculator, you came up with a size of 42lb injector needed to reach your HP goals.

How to calculate the size of a base injector?

You are going to use the multiplying factor of 1.47 to get your size. The 1.47 number represents the difference between the stoiciometric fuel ratio of gasoline and E85. Gasoline is 14.7 and E85 is 10.0 Now that you have the “magical” factor and your base injector size, do the math.

What’s the maximum duty cycle for a fuel injector?

Desired horsepower, (The amount of power you desire directly affects the amount of fuel you will need to achieve your goal.) Maximum injector duty cycle (IDC) (In order to be conservative, Fuel Injector Clinic recommends a maximum duty cycle of 90%.)

Which is engine management system control fuel injectors?

FuelTech FT600, FT550, FT550LITE, and FT450 engine management systems are capable of controlling any fuel injector sizing, even the massive 850 lb/hr injectors found in super-high horsepower applications. The addition of a Peak & Hold driver box to any ECU allows ultimate control of low impedance fuel injectors.