What can increase burn rate for b100?

[CanadianCarGuy]

I run b100 on and off that I make myself, and I am wondering how could one speed up the burn rate to get some of the power loss and fuel economy back?

I see the quickest diesel dragster in the world runs b100, so what can I do to get a hotter burn?

 

[chuckwilson]

Heat the fuel to 90 Deg. F thew the filters no higher or lower. thats what Davco says on there new bio filter assy. for big trucks.

 

[JoeBioDiesel]

Hi CCG,

It's not the burn rate that causes a power loss with Bio. It's the fact that it has a lower heat content than Diesel fuel. You can regain power by increasing the fueling. The cool part is that B100 reduces visible soot by 70% on average, so you can increase the fueling back to stock levels(and beyond) without making more smoke. Also, you'll run lower EGTs at the same HP levels with Bio. . might be why they're running it in the dragster.

Joe

 

[CanadianCarGuy]

I was wondering if I can run more timing with b100 than petroleum diesel? As for adding more fuel, not a problem, I'll just stack my comp with a smarty. I was always under the impression that bio had more btu's in it, just took longer burn. I guess I have my homework cut out for me if I am going to be competitive against other guys with same mods running petroleum diesel at the strip!



Thanks for the advice!

 

[JAmos]

What about adding a bunch of cetane additive?



Jordan

 

[JoeBioDiesel]

I recommend running the same timing you would on petrol diesel. You already have reduced EGTs and can easily gain any lost horsepower. Advancing the timing doesn't gain you anything on Bio... so don't do it. That's my recommendation anyway.

Joe

 

[CanadianCarGuy]

You are probably right about leaving the timing alone! I'm gonna throw the first batch of b100 in since I did most of the mods on my truck. There's just over half tank right now, so it'll be around b50.

 

[EMD-Run8]

Not to sound like I'm knockin' your home brew, but the B100 I run comes from a plant in Alabama and it runs fine in my '98. B100 just has less BTU's than #2 but I've been told that it burns more completely in the cylinder. Jet fuel (JP8) would act in a similar way. Don't ask me how I know.

 

[HEMI®Dart]

I run b100 on and off that I make myself, and I am wondering how could one speed up the burn rate to get some of the power loss and fuel economy back?

I see the quickest diesel dragster in the world runs b100, so what can I do to get a hotter burn?

This may be classified as "Free energy"

 

[JFaughn]

I was wondering if I can run more timing with b100 than petroleum diesel? As for adding more fuel, not a problem, I'll just stack my comp with a smarty. I was always under the impression that bio had more btu's in it, just took longer burn. I guess I have my homework cut out for me if I am going to be competitive against other guys with same mods running petroleum diesel at the strip!

Thanks for the advice!

Bio-diesel has less BTUs than dino , but more cetain that dino , once you've lost the BTUs [ that were the HPs are ] you need to put some back , we've found that for an average eng. that about 35% bio/65%dino gave more MPGs and no loss of power , so the use of dino will increace your fuel costs , have'nt had a chance to do any expairamenting to look at tuning for bio but would like to .

 

[CanadianCarGuy]

I have tried b25 to b40 this past week and actually improved my mileage with up to b30ish. This is with the comp box set to level 2. As for adding btu's I will try adding regular unleaded gasoline to gain some of the btu's back! I would like to gain some ground between between me and the guys running straight #2.

 

[JoeBioDiesel]

Hi CCG,

Gasoline actually has less BTUs than either Diesel or Biodiesel. You don't need to replace the lost BTUs. You just add more fuel to replace the lost power.



For you guys that claim mileage gains by blending Bio and Petrol diesel, that is disputed by pretty much every manufacturer and dyno test ever done. The problem is that I've witnessed the same thing on my own vehicles. I'm at a loss to explain it though.

Joe

 

[CanadianCarGuy]

The mileage gain up to b30ish is simple. The injection pump is working half as hard. My truck's injection pump usually is heard while standing in front of the truck while it's idling, when I have biodiesel in the tank the stacks drown out the sound of the injection pump. You can actually here the engine run smoother. There is a certain point where the viscosity and power loss issues start to take over. Running b20 pretty much does the same thing as diesel additives, it adds lubrication. Anyway's even if gas has less btu's than diesel or bio, I was pretty happy with the results, I added 6% gas to 100 litres biodiesel and noticed right away that I got some of the responsiveness back. There other guys at the infopop biodiesel site that run 15% gas in there blends instead of kerosene! I don't mind experimenting, I have been thinking about p-pumping my 24valve when the injection pump goes.

 

[Msilbernagel]

I think you're right (CanadianCarGuy), but also there is another factor. #2 does not burn exactly like bio - they have different rates of burn, and different timing characteristics. If you were to light two cylinders and plot pressure over time (over the course of ignition to bottom dead center) you would be able to see the peak at different points of time, narrower . vs. broader perhaps, shifted left (earlier peak) or right, etc.



I think part of the "I get better" . vs. "I get worse" mileage is that we essentially get lucky with the fuel 'tuning' timing to better fit our particular trucks and driving conditions.



Call it luck...



My thoughts.



Mark

The mileage gain up to b30ish is simple. The injection pump is working half as hard. My truck's injection pump usually is heard while standing in front of the truck while it's idling, when I have biodiesel in the tank the stacks drown out the sound of the injection pump. You can actually here the engine run smoother. There is a certain point where the viscosity and power loss issues start to take over. Running b20 pretty much does the same thing as diesel additives, it adds lubrication. Anyway's even if gas has less btu's than diesel or bio, I was pretty happy with the results, I added 6% gas to 100 litres biodiesel and noticed right away that I got some of the responsiveness back. There other guys at the infopop biodiesel site that run 15% gas in there blends instead of kerosene! I don't mind experimenting, I have been thinking about p-pumping my 24valve when the injection pump goes.

 

[CanadianCarGuy]

Yup, I think your bang on as well. The biodiesel is still burning as the piston is coming back down, this what makes it run so smooth. That is why I am adding gas to help get it back to where it is supposed to be. There are a couple guys running b100 with 15% gas and adding cetane booster on top of this and they are getting very good results.