May have solved 100% E85 on LNF puzzle
#826
#827
#828
That's got to also be balanced with power output though. If we can't run 0.88 year-round due to the colder/denser air calling for more fuel than the fuel system can provide, and then we lose power as we continue to 1.00, then there needs to be some sort of balance between the two.
I checked on that alternative Bosch HPFP option. Looks like a dead end right now, so this is still the more promising (and cheaper) option.
I checked on that alternative Bosch HPFP option. Looks like a dead end right now, so this is still the more promising (and cheaper) option.
#830
Just been trying to go E85 for the no mixing convenience if the same power is to be had. I'm not willing to cut midrange torque (via limiting boost) to go E85 though.
#832
#833
Waiting on Nick to send me a revision....hint hint Nick
#834
Joined: 12-23-09
Posts: 12,766
Likes: 7
From: Mt. Pleasant S.C.
#836
#838
#840
#841
So, Today while racing my brother's Turbo Diesel F350 I got a Reduced Engine Power display on the dashboard and now the car wont go past 5700 rpm's without a misfire. All else seems fine, car pulls really hard to that point, seems like there's not enough fuel going in or something. So, a bigger fuel pump might be needed to run past 24 psi on E85.
I tried to put this on the LNF forums but it wont let me, it keeps saying I don't have permission to post new threads. o well, lol
I tried to put this on the LNF forums but it wont let me, it keeps saying I don't have permission to post new threads. o well, lol
#842
So, Today while racing my brother's Turbo Diesel F350 I got a Reduced Engine Power display on the dashboard and now the car wont go past 5700 rpm's without a misfire. All else seems fine, car pulls really hard to that point, seems like there's not enough fuel going in or something. So, a bigger fuel pump might be needed to run past 24 psi on E85.
I tried to put this on the LNF forums but it wont let me, it keeps saying I don't have permission to post new threads. o well, lol
I tried to put this on the LNF forums but it wont let me, it keeps saying I don't have permission to post new threads. o well, lol
24psi is pretty high especially for e85
#843
That's got to also be balanced with power output though. If we can't run 0.88 year-round due to the colder/denser air calling for more fuel than the fuel system can provide, and then we lose power as we continue to 1.00, then there needs to be some sort of balance between the two.
I checked on that alternative Bosch HPFP option. Looks like a dead end right now, so this is still the more promising (and cheaper) option.
I checked on that alternative Bosch HPFP option. Looks like a dead end right now, so this is still the more promising (and cheaper) option.
#844
1.00 Lambda is ~9.7 A/F on E-85 (lots of extra oxygen allows for a very rich burn comapred to gas) . That and the fact that it is 106 octane makes power loss at 1.00 PE lambda far less than you might think (timing limt can be reached easily on E-47) I run E-47 cars (12.0 Stoich A/F) at 0.88 lambda (10.6 A/F) so that is leaner than E-85 at 1.00 Lambda. Just food for thought. Look at the LNFs lambda efficiency table there is only a 2% difference in calcuated engine torque output at 0.90 lambda vs 1.00 lambda.
E87 is half E85 and half 93 octane?
E47 my bad,
Last edited by MTE; 04-01-2011 at 01:14 PM. Reason: Automerged Doublepost
#845
Yes it is a 50/50mix of gas (E-10 normally) and E-85. E-47 will have 99% of the knock resistance of e-85 and will be happier running at a leaner mixture than E-85. The main PITA is mixing gas and E-85 all the time.
#849
Started the process again yesterday, 80% Ethanol in the tank now. Leaned out the midrange and cut a bit of timing in the same areas. 70 - 100 yesterday in 3.8 sec, 24 psi boost. No injector misfire noted. 32% max, 30% for most of the pull. The next fill up will tell the tale though when it's all in. Thanks Matt and Vince for the help.