E85 Powered VR4?

[Import Power]

Originally Posted by ver fer

Yeah that is a good place to start. You'll want to tune it a little richer than with gas. I shoot for around 11.6-11.2.

I don't know I you injectors will be large enough to though. I have 680's and 13t's with the fuel pressure at 50 psi my IDCs were over 100. I just turned the fuel pressure up to 55 psi and the IDCs are now around 90.

I have 1000cc inj and two pumps.
We shall see. Not looking for huge power. Stock heads will limit that.
Maybe 650awhp tops

I can also turn the pressure up to 55psi or so. It's going to be close according to the calculations.

[MichaelMR2]

Fuel ........................ AFRst ........ FARst ....... Equivalence Ratio ... Lambda
Gas stoich ................ 14.7 .......... 0.068 ................ 1 ................... 1
Gas max power rich .... 12.5 .......... 0.08 ................. 1.176 .............. 0.8503
Gas max power lean .... 13.23 ........ 0.0755 .............. 1.111 ............. 0.900
E85 stoich .................. 9.765 ....... 0.10235 ............ 1 ................... 1
E85 max power rich ...... 6.975 ....... 0.1434 .............. 1.40 ............... 0.7143
E85 max power lean ..... 8.4687 ...... 0.118 ............... 1.153 .............. 0.8673
E100 stoich ................ 9.0078 ...... 0.111 ............... 1 .................... 1
E100 max power rich .... 6.429 ........ 0.155 .............. 1.4 .................. 0.714
E100 max power lean .... 7.8 .... ...... 0.128 .............. 1.15 ................ 0.870

Stolen from:

Converting to E85 (ethanol fuel) - Turbobricks Forums

[Import Power]

Originally Posted by MichaelMR2

Fuel ........................ AFRst ........ FARst ....... Equivalence Ratio ... Lambda
Gas stoich ................ 14.7 .......... 0.068 ................ 1 ................... 1
Gas max power rich .... 12.5 .......... 0.08 ................. 1.176 .............. 0.8503
Gas max power lean .... 13.23 ........ 0.0755 .............. 1.111 ............. 0.900
E85 stoich .................. 9.765 ....... 0.10235 ............ 1 ................... 1
E85 max power rich ...... 6.975 ....... 0.1434 .............. 1.40 ............... 0.7143
E85 max power lean ..... 8.4687 ...... 0.118 ............... 1.153 .............. 0.8673
E100 stoich ................ 9.0078 ...... 0.111 ............... 1 .................... 1
E100 max power rich .... 6.429 ........ 0.155 .............. 1.4 .................. 0.714
E100 max power lean .... 7.8 .... ...... 0.128 .............. 1.15 ................ 0.870

Stolen from:

Converting to E85 (ethanol fuel) - Turbobricks Forums

6.975 max power rich?
That's odd, everyone here says tune for 11.2-11.6.
Which is it?


What I will do is start at WG pressure, 14psi, and work my way up until (if) I run out of pump/injector.
One thing I am really interested in is power under the curve. The 50 trims are laggy, and from what I have been reading the extra 30% fuel creates a nice increase in exh flow which makes turbos spool up faster.
I have enough runs at various boost levels with the dyno logging boost to compare boost/spool and power.

I will make a new thread when all the data is captured. I will start with no timing advance over what I run now to see what E85 does with just the 30% (give or take) fuel adjustments. And how much faster spoolup is. Then how much timing I can give it and the power increases. It will be a good comparison. Our dyno is very accurate/repeatable. A car can come back a month later and be within 1-2 HP. So comparison runs will be accurate data.

This is going to be fun.

[Rogue_Ant]

That is the true AFR. However most people use the gasoline scale, since it is easier and familiar.
If you don't change the scaling on your WBO2, then shoot for 11.2-11.6:1.


-Rogue

[Import Power]

Originally Posted by Rogue_Ant

That is the true AFR. However most people use the gasoline scale, since it is easier and familiar.
If you don't change the scaling on your WBO2, then shoot for 11.2-11.6:1.


-Rogue

that's kinda what I thought...but then ti confused me

[Alan92RTTT]

Originally Posted by Import Power

Found the closest E85 station (National Ethanol Vehicle Coalition) to me is only 23 miles away. Today's price is $3.69/gal and they allow Container/drum filling. I have an empty 55 gallon C16 drum.
Looks like a have a Project this weekend

I can get premium for 3.69 per gallon.

[Import Power]

Originally Posted by Alan92RTTT

I can get premium for 3.69 per gallon.

your point being?

My $3.69/gallon is E85 which is Race fuel (actually works better than race gas in most applications) not 93 octane pump.

[Alan92RTTT]

My point being E85 normally runs about 50 cents less per gallon from regular. I can probably get E85 for about $3.

I'd think that you shoujld be able to get a much better price than that.

[Import Power]

Originally Posted by Alan92RTTT

My point being E85 normally runs about 50 cents less per gallon from regular. I can probably get E85 for about $3.

I'd think that you shoujld be able to get a much better price than that.

Regular is $4.00 here, some places are at $3.99.

NC has a higher Tax on fuel than any surrounding state.

[Alan92RTTT]

Ah, I'm just used to MI being on the higher side in the summer.