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assistance required with E85 conversion

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Old 04-10-2011, 11:16 AM
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ham
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Default assistance required with E85 conversion

I have a 99 EM1, which currently has a turbo D series in it. Soon I'll be putting a b16 back in it, with the same turbo setup (minus the manifold obviously).

So I plan on destroying my D series with a lot of boost and E85, then just having it ready to go for the b16 when it goes in. I do not plan on making more than 300whp.

My logic is - E85 stations are all over in Michigan. I figure if I tune it right, I can make 300whp with a small turbo (K26) and higher boost while getting better mileage per $.

So what do I need if I only want 300whp and E85? I have a ton of questions, because it's my daily and I want it to be right:

Single in tank walbro 255 and stock fuel lines should be fine?
Is a fuel rail mandatory?
How about the fuel filter and rubber line to the rail?
Can someone recommend a regulator for me?
What about injector sizing? Should I just go with 1000s?
What about the Cat? I have a magnaflow hi-flow cat on there now.
What about the EVAP system? Just take it all out or disable it?

Thanks guys. I know I'm a noob with this E85 stuff. Never gave a crap about it before!
Old 04-10-2011, 07:51 PM
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ham
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Default Re: assistance required with E85 conversion

45 views and no love? bedtime bump
Old 04-10-2011, 08:13 PM
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Default Re: assistance required with E85 conversion

A single 255 with stock lines is fine. Get 1000cc if you haven't do so. It'll leave you room to grow later. If you have no emission then ditch the cat and just run a straight pipe or test pipe.
Old 04-11-2011, 06:41 AM
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Default Re: assistance required with E85 conversion

I dont know how you figured your going to get better " better mileage per $. " and why would you buy a bunch of parts for a motor that you plan on running into the ground and swapping when it dies?

Stock Rail is fine
Stock Reg is fine
Stock Lines... fine
1000's will support 500whp on E85 with a lil room to play
Cats kill power...

My friend ran 10's and made 550+whp on all OEM Lines, Rail, Reg and Filter with no adverse affects for over a year and 10k miles.
Old 04-11-2011, 07:55 AM
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Default Re: assistance required with E85 conversion

My understanding of e85 is that the downside is that it needs to flow more than regular petrol to make power, but the prices of e85 are cheaper so you end up breaking even/maybe doing a little better in the end. So better mileage per dollar is a misconception.
Old 09-17-2013, 10:36 AM
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Default Re: assistance required with E85 conversion

Bringing this one back due to a project brewing in my mind.

E85 contains 82-85% Ethanol and the remaining is a gasoline mixture.

E85 at the pump has an octane rating of 100-105 but has less heat energy than gasoline.

One of the largest goals of tuners is to fit as much air/fuel mixture into the cylinder for each power pulse, and that is where E85 holds the advantage.

Higher octane allows for timing advancement, and a lower a/f ratio (Stoich 9.7:1) allows us to accomplish the problem of getting air into the cylinder by just adding more fuel for how much air is getting in. Also advancing the timing safely can be done with E85 because of its cooler burning temp producing more power and will give you a nice even power stroke.

You will need to upgrade systems like fuel pump, rail, injectors, reg, ect and a proper tune to reap full benefits but they are out there.

My plan is to create a f23a1 block h23a1 head k20 piston frankeinstein build. Having a CR of 12:1 can easily be utilized by an E85 system as well as allow the engine to run cooler, and produce more power safely.

Getting my hands on a f23a1 engine/trans for a deal next week just going to use block for something to build myself and order a built head package with ported head TB and mani from Gude performance with a custom cam grind built for E85 and the specs of the custom engine specs.

Using heat energy equations Ethanol will give a higher BTU/Lb of air (1279.5BTU/Lb air) compared to pump gas (1226.6BTU/Lb air)

Although it has less heat energy it contains a lot of oxygen (30%) which aids in combustion requiring less air in the cylinder and actually produces more power.

Methanol for race gas uses the same concept has a Stoich A/F of 6.45:1 and a 1332.25BTU/Lb of air being the best option of profession power builders.

Probably will keep this build for the middle of winter so i dont get cabin feaver watching the ice freeze, just doing some research before I dive in and I thought I would share some of this information for the benefit of any automotive application. Questions appreciated.
Old 09-17-2013, 11:01 AM
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Default Re: assistance required with E85 conversion

Thanks for bumping this old thread with the science lesson.
Why don't you start a new thread for your build.
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