Your afr with e85 - Page 3 - Yellow Bullet Forums
;

Go Back   Yellow Bullet Forums > Technical Section > Racing Fuels

Reply
 
Thread Tools Display Modes
Old 06-20-2018, 06:04 PM   #31
Mark Aubele
Junior Member
Spooled up
 
Join Date: Nov 2017
Posts: 175
Default Re: Your afr with e85

Quote:
Originally Posted by Fishmasterdan View Post
Thanks a bunch for your input.
I think that is the exact tune I think I am settling on. 12.3 12.2 afr. -7 plugs. 26 to 28 degrees. I wish I had a Dyno close by.
No problem man. We went into this LS3 combo thinking it would want way more timing than it does, and have had it on the dyno twice since late March, but 26* is all it wants. It may run faster at the track with more timing but unfortunately the type of racing we do there are too many variables to change anything unless I see an issue with the AFR leaning out or something. Now that you have a good base you will likely learn more at the track than the dyno anyway.
Mark Aubele is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 06-21-2018, 02:25 AM   #32
1963 corvette
Member
Pullin gears
 
1963 corvette's Avatar
 
Join Date: Jun 2016
Posts: 877
Default Re: Your afr with e85

I still like tuning with coldest plug I can keep clean.E85 is pretty safe detonation wise but can pre ignite.Sharp edge or hot edge etc lighting mix at incorrect time.6 plug u show has to much heat and timing mark is pretty maxxed out Imo if 7 works and is easy to read that is fine.If you ever dead hook car and really pull engine down you may upset rings then oil enters pic.Pre ignition is intensified a bunch.I have saw our engine builder push this stuff to the edge and like he says ,8 hp more on edge ain't worth it .I like to make passes not fix torches parts.Our engine builder kept throwing timing and e85 at a engine once to make a point.Numbers he was doing was crazy.He then leaned it way up took 15 degs timing out.was in 13.85 afr range.Not hurt a thing but power fell off a ton.He made 6 pulls like that showing me way lean not hurt but lose power only.Way fat and can't light the fuel and ring lands are gone.He was in high 50s on timing and 10 to 1 afr.Making killer power there but if missed one step or other she would of been a bomb.At that interval with high timing plug gap with a msd 12 mag was down in .009" area to light it,with a 11 heat plug.Im not suggesting anybody try that stupid shit just reporting what I saw.
__________________
Our junk

72 Chevelle 618bbc dart 20 heads and profiler t ram with enderle hat with efi.
3065lbs-8.12-166.32 e15 fuel
Nitrous plate we made under hat.102 nitrous 93 e85 @5.5 lbs &900 nitrous pressure.
[email protected]

69 chevelle.637 pump gas 91/e15 ..
Brodix2005 spread port heads.
3150 lbs. New for 18
7.96-169.67

Sons 69 Chevy truck.
369 LS -f1r charger e85
3 speed trans .4.71 gears
[email protected] 3985 lbs w driver.

Last edited by 1963 corvette; 06-21-2018 at 02:26 AM.
1963 corvette is offline   Reply With Quote
Old 06-21-2018, 02:30 AM   #33
1963 corvette
Member
Pullin gears
 
1963 corvette's Avatar
 
Join Date: Jun 2016
Posts: 877
Default Re: Your afr with e85

This whole plug thing is like a bonfire.You throw more gas on it makes more heat.Key is what can you get by with before something hurt.If you look in engine that's run with e85 and hot plug you see all heat concentrate in one area.Cooler plug and lean it up a little and more timing seems to broaden burn area over more of piston.I was taught this is what you are looking for.
__________________
Our junk

72 Chevelle 618bbc dart 20 heads and profiler t ram with enderle hat with efi.
3065lbs-8.12-166.32 e15 fuel
Nitrous plate we made under hat.102 nitrous 93 e85 @5.5 lbs &900 nitrous pressure.
[email protected]

69 chevelle.637 pump gas 91/e15 ..
Brodix2005 spread port heads.
3150 lbs. New for 18
7.96-169.67

Sons 69 Chevy truck.
369 LS -f1r charger e85
3 speed trans .4.71 gears
[email protected] 3985 lbs w driver.

Last edited by 1963 corvette; 06-21-2018 at 02:33 AM.
1963 corvette is offline   Reply With Quote
Old 06-21-2018, 02:38 AM   #34
1963 corvette
Member
Pullin gears
 
1963 corvette's Avatar
 
Join Date: Jun 2016
Posts: 877
Default Re: Your afr with e85

Thanks for sharing your plug pics.You probably helped a few peeps learn what looks good or bad.Remember your working with one afr guage.You might see 12.3 put buddies guage in and see 12.8 .So don't get caught on numbers just learn what plug says.Find hottest holes in ur combo and tune to them.i could care less how you tune your engine or what afr you use.Im only concerned about mine.So use my numbers as a tool but not the gospel.
__________________
Our junk

72 Chevelle 618bbc dart 20 heads and profiler t ram with enderle hat with efi.
3065lbs-8.12-166.32 e15 fuel
Nitrous plate we made under hat.102 nitrous 93 e85 @5.5 lbs &900 nitrous pressure.
[email protected]

69 chevelle.637 pump gas 91/e15 ..
Brodix2005 spread port heads.
3150 lbs. New for 18
7.96-169.67

Sons 69 Chevy truck.
369 LS -f1r charger e85
3 speed trans .4.71 gears
[email protected] 3985 lbs w driver.

Last edited by 1963 corvette; 06-21-2018 at 02:40 AM.
1963 corvette is offline   Reply With Quote
Old 06-21-2018, 07:51 AM   #35
awake1630
Member
Pullin gears
 
awake1630's Avatar
 
Join Date: Sep 2010
Location: Long Island
Posts: 751
Default Re: Your afr with e85

I know this may be apples to oranges but to give you a little insight.

I run a traditional small block chevy platform.

400 SBC . 13.8:1 dome pistons 66cc chamber heads.

ngk -7 non projected tip.

I am carbed

Running 40* timing

12.8 idle

heat mark is right in the bend of the strap
__________________
1969 Camaro
10.83 @ 123.33
1.53 - 60 foot
SBC
Brodix track 1 2.08/1.60
Ford Aod
4.33 gears
4 wheel Disc brakes
E85
awake1630 is offline   Reply With Quote
Old 06-21-2018, 09:20 AM   #36
Fishmasterdan
Junior Member
Spooled up
 
Join Date: Apr 2016
Posts: 129
Default Re: Your afr with e85

All excellent info thanks for sharing. I like to hear others experience's.

I also agree most motors are different but plugs dont lie. The problem I struggle with is, what determines the correct plug heat? You can run a 6 light timing and run an 8 with more timing, you can tune both with timing to get the correct mark and heat. What determines what heat range to use?
Fishmasterdan is offline   Reply With Quote
Old 06-27-2018, 08:46 PM   #37
Fishmasterdan
Junior Member
Spooled up
 
Join Date: Apr 2016
Posts: 129
Default Re: Your afr with e85

Ok back with final tune. 12.3 28 degrees -7 non projected.



Fishmasterdan is offline   Reply With Quote
Old 06-28-2018, 03:41 PM   #38
Mark Aubele
Junior Member
Spooled up
 
Join Date: Nov 2017
Posts: 175
Default Re: Your afr with e85

That's exactly what my ground strap looks like. Same plug
Mark Aubele is offline   Reply With Quote
Old 06-28-2018, 08:04 PM   #39
cam406406
Senior Member
Smoked another BBC
 
cam406406's Avatar
 
Join Date: Feb 2007
Location: Lombard illinois
Posts: 1,576
Default Re: Your afr with e85

7 plug all day
I run a 7 plug with boost.
cam406406 is offline   Reply With Quote
Old 06-28-2018, 08:56 PM   #40
Fishmasterdan
Junior Member
Spooled up
 
Join Date: Apr 2016
Posts: 129
Default Re: Your afr with e85

I will add. 6 plugs are faster.
Leaner is faster.
But for a bracket car the correct tune only changed .25 mph all day. Leaner it varied 1.5 mph through the day with no wind. I could run on the ragged edge but the gains are 1.5 mph faster and .05 faster but inconsistent. Easy choice. If I want to run times I'll throw a bottle on it.
Fishmasterdan is offline   Reply With Quote
Old 07-04-2018, 04:30 PM   #41
Fishmasterdan
Junior Member
Spooled up
 
Join Date: Apr 2016
Posts: 129
Default Re: Your afr with e85

Question. Put a mighty mouse catch on. Wholy smokes there's a lot of milk in it.
How many passes do you get on e85. I changed the oil and it was way thinner than it should be. But there's quite a few passes on the oil.
I made a n/a pass just get water. Shoot it with a 150 shot and I get alot in the catch can. I assume I am burning out the moisture in the oil.
Fishmasterdan is offline   Reply With Quote
Old 07-04-2018, 08:50 PM   #42
2010viper
Junior Member
Launchin
 
2010viper's Avatar
 
Join Date: Jan 2014
Posts: 377
Default Re: Your afr with e85

We always see some of that in catch can.Just part of it.Thinner oil the worse you see it.I run 15-40 rotella on streets and track.Our pump gas deal we drive 80 miles to track and make 1/2 dozens runs and go home.I can see and smell fuel in it but has never been issue.We started e85 in our stuff in 99.We never put over 500 miles on our oil .Our afr has always been 12.5 area under load.We try and keep water temp in 185 area.Cooler than that and oil looks worse.We have dry sump and warm oil before hand.

Last edited by 2010viper; 07-04-2018 at 08:55 PM.
2010viper is offline   Reply With Quote
Old 08-20-2018, 02:22 PM   #43
Fishmasterdan
Junior Member
Spooled up
 
Join Date: Apr 2016
Posts: 129
Default Re: Your afr with e85

Made a wholesale change this weekend. My previous tune was all over the map for consistency. I went with the Mark Sullens tune. Did exactly what he told me.
11.6 AFR 30 degrees timing. The stupid car ran 10.60 all day and the DA went from 400 to 2300 through the day. Next day. Little more humidity it ran 10.68 first hit (with a head wind) humidity went down wind laid down and the stupid thing ran 10.60. Not sure if it was just a fluke but I ran 10 passes all 10.60.. Old tune 10.58 best pass then 10.80 by the end of the day.
Fishmasterdan is offline   Reply With Quote
Old 08-21-2018, 10:11 AM   #44
tutsz06
Junior Member
Burnout box
 
Join Date: Aug 2018
Posts: 2
Default

Just to add to the conversation, my LS6 likes it lean on E45 (not E85). Like 13:6 lean on lower timing. I think maybe because its E45?
tutsz06 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 08-21-2018, 01:22 PM   #45
Fishmasterdan
Junior Member
Spooled up
 
Join Date: Apr 2016
Posts: 129
Default Re: Your afr with e85

Quote:
Originally Posted by tutsz06 View Post
Just to add to the conversation, my LS6 likes it lean on E45 (not E85). Like 13:6 lean on lower timing. I think maybe because its E45?
I cant respond to your PM. But to answer the question. I have not seems any significant MPH changes. I have ran 12.4 to 11.6. Most being high 124 to low 125.

Do you race it? Is it consistent that lean? Whats low timing? What kind of heads?
Fishmasterdan is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -4. The time now is 04:06 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 0%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Yellow Bullet LLC
 

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.