Fuel lines - stock vs modified on E85

[Jerryl]

I have a friend who is thinking of going E85. If fuel pump etc. are good, what is the expected mph on stock vs modified (drilled) stock fuel lines?

How far can you push 80 and 120 lb injectors?

 

[seeya v6]

First list the current mods on your buddies car....then we can point you in the right direction.

 

[Nick Micale]

A local turbo car with an iron head 3.8 put down 529 HP to the rear wheels using a TE-45A turbo, 120# injectors and stock lines on e-85!

This full weight Limited will run mid-high 10's and high 120's MPH.

 

[Jerryl]

A local turbo car with an iron head 3.8 put down 529 HP to the rear wheels using a TE-45A turbo, 120# injectors and stock lines on e-85!

This full weight Limited will run mid-high 10's and high 120's MPH.

Thanks Nick.
Were the saginaw fittings on the lines drilled out?

 

[TT/Ameasap]

I'm almost positive you would need to drill out the return line to reduce pressure at idle, unless you have a 2 stage system wired for pumps.

 

[Rafs-T-Type]

A local turbo car with an iron head 3.8 put down 529 HP to the rear wheels using a TE-45A turbo, 120# injectors and stock lines on e-85!

This full weight Limited will run mid-high 10's and high 120's MPH.

Impressive. Did he have to crank the base FP to get it done?

 

[Hot Air]

Remember, you have to pump 30% more fuel with E85 to get the same horsepower, so your stock lines are already pushing 30% more fuel which requires more pressure which pushes your pumps even more. Also, as fuel flow goes up, the pump produces LESS pressure so the pump is being pushed big time! Bigger lines help that situation by reducing the pressure drop in the feed and return lines! FWIW, you cannot look at just one component in the fuel system (supply and return lines, fuel logs, fuel pump, fuel pressure regulator, injectors, filters and all the fittings), you have to look at it all since it is strong as the weakest component. Yes, your buddy may appear to be getting away with something but that doesn't mean you can or will. No two fuel systems and motors are ever exactly the same!
Conrad