E-85 MEGA THREAD
08-26-2013, 12:23 PM
#406
Rennlist Member
On my 3.1l 16v engine I was at 100% DC on 1200 cc injectors @ 3.5 bar already at 6000 rpm @ 1.2 bar.
The raised FP equals ~1296 cc. Also remember that higher rpms reduces the time window available to inject fuel.
The above figures was in batch injection mode though so using full sequential lowers the DC as the injector deadtime happens twice at batch for every full 720 deg cycle.
Now I'm using Bosch 2200 cc high impendance injectors. They work great.
The raised FP equals ~1296 cc. Also remember that higher rpms reduces the time window available to inject fuel.
The above figures was in batch injection mode though so using full sequential lowers the DC as the injector deadtime happens twice at batch for every full 720 deg cycle.
Now I'm using Bosch 2200 cc high impendance injectors. They work great.
08-26-2013, 01:50 PM
#407
Rennlist Member
Shawn, you were running on pump fuel still, or E85? (Sorry 2:50am, can't remember) What boost with those numbers?
08-26-2013, 01:55 PM
#408
Nordschleife Master
Too bad the clutch cannot handle it 
(full sequential injection mode)
08-26-2013, 10:59 PM
#409
Rennlist Member
On my 3.1l 16v engine I was at 100% DC on 1200 cc injectors @ 3.5 bar already at 6000 rpm @ 1.2 bar.
The raised FP equals ~1296 cc. Also remember that higher rpms reduces the time window available to inject fuel.
The above figures was in batch injection mode though so using full sequential lowers the DC as the injector deadtime happens twice at batch for every full 720 deg cycle.
Now I'm using Bosch 2200 cc high impendance injectors. They work great.
The raised FP equals ~1296 cc. Also remember that higher rpms reduces the time window available to inject fuel.
The above figures was in batch injection mode though so using full sequential lowers the DC as the injector deadtime happens twice at batch for every full 720 deg cycle.
Now I'm using Bosch 2200 cc high impendance injectors. They work great.
08-28-2013, 06:52 AM
#411
Nordschleife Master
The power numbers doesn't really add up when calculating with E85 but that just shows that dyno numbers are not absolute.
Here's a power calculator that can be used to play around with:
http://www.rceng.com/technical.aspx
A rough rule of thumb seems to be a BSFC @ 0.84-0.91 for E85.
Using a calculation like this will rarely correspond to RWHP numbers from a dyno but are more truthful.
08-28-2013, 09:23 AM
#412
Rennlist Member
09-01-2013, 11:39 PM
#413
Addict
Rennlist Member
Rennlist Member
+1, Shawn was that with E85?
The power numbers doesn't really add up when calculating with E85 but that just shows that dyno numbers are not absolute.
Here's a power calculator that can be used to play around with:
http://www.rceng.com/technical.aspx
A rough rule of thumb seems to be a BSFC @ 0.84-0.91 for E85.
Using a calculation like this will rarely correspond to RWHP numbers from a dyno but are more truthful.
The power numbers doesn't really add up when calculating with E85 but that just shows that dyno numbers are not absolute.
Here's a power calculator that can be used to play around with:
http://www.rceng.com/technical.aspx
A rough rule of thumb seems to be a BSFC @ 0.84-0.91 for E85.
Using a calculation like this will rarely correspond to RWHP numbers from a dyno but are more truthful.
09-02-2013, 05:50 AM
#414
Nordschleife Master
Here is another calculator for comparison http://fuelinjectorclinic.com/hp-calculator
09-02-2013, 08:20 AM
#415
Rennlist Member
I seem to come up with being able to use 1650cc inj's for my car. I don't know yet what is actually going in there. I'll add it to this thread once I know.
09-20-2013, 09:43 AM
#416
Nordschleife Master
Base FP = 3 bar.
Boost = 1 bar
Total FP = 4 bar
Actual FP = Total FP - intake pressure = 3 bar actual FP
Another way of describing it: if your FP is 1 bar and your boost is 1 bar zero fuel will be injected.
03-26-2014, 10:53 PM
#417
Rennlist Member
So 2 weeks ago the station I use for E85 closed. There is another station about 10 miles away so I got my E85 at this new station. This last weekend my 044 got VERY loud and I found that the tank screen was blocked with some kind of brown substance. I cleaned the screen and all was good. Tonight I got 5 gallons in a can and screened it using a filter and sure enough the same substance showed in the filter. Next nearest station is 25 miles away.
Any one else see anything like this?
Any one else see anything like this?
03-27-2014, 02:29 AM
#419
Drifting
Join Date: Aug 2009
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After reading Patrick's post about the gummed up injectors I started using the Lucas flex fuel cleaner. I have noticed the engine is running smoother and appears to be accelerating faster. I am using the same station every time. It is at a Chevron but the name says Propel. I guess I need to pull my strainer and take a look. I tried to post some pics, but I got this parse error message. Not sure what is up with that.
