E85 users; Timing, Boost and CR..question.
E85 users; Timing, Boost and CR..question. I'm running 11.0:1 CR and 9psi with total timing at 19*.
I have no knock and think she can take 1 to 3 more degrees and curious to know what you guys numbers are.
CR?
Boost?
Timing?
I have no knock and think she can take 1 to 3 more degrees and curious to know what you guys numbers are.
CR?
Boost?
Timing?
Motor details are in my signature and I have run as much as 15 psi on 15-17* of timing. A dyno will be your best friend for your questions. If you add one degree and it picks up 20 rwhp then try another, when you get to the point it isnt picking up much more stop there.
Last edited by black98ws6ta; Dec 10, 2009 at 03:59 PM.
Youd don't want to completely chew up your safety margin though. If you tune right to the hairy edge, sometime you will lug the motor, overboost, maybe get some E75 from a bad blend and hear the motor-hammering ping of death. At full throttle, chances are you'll never hear it coming.
Hairy edge tunes are for people that are sponsored and can afford to lose a motor, IMO. Especially with your CR.
Just my .02.
Jim
Hairy edge tunes are for people that are sponsored and can afford to lose a motor, IMO. Especially with your CR.
Just my .02.
Jim
any e85 users please post up your info, this is the route i am looking at going.
my cr is 9.3 but i am mainly using it cuz it keeps the temps down better then premium.
I am about to do a head swap to some afr's and a vic jr with elbow and max out my d1 and would like to know everyones results on e85
and to the op sorry to hijack i want to see if we can get all the e85 users to post up there info.
my cr is 9.3 but i am mainly using it cuz it keeps the temps down better then premium.
I am about to do a head swap to some afr's and a vic jr with elbow and max out my d1 and would like to know everyones results on e85
and to the op sorry to hijack i want to see if we can get all the e85 users to post up there info.
Launching!
Joined: Jun 2008
Posts: 242
Likes: 0
From: Glen Rock, PA
Check out Supraforums.com. There really informed about running e85 with boost. Most are saying that e85 has such a high resistance to knock they can keep adding timing untill they loss power before they ever get any kind of knock or detonation. But once they do get detonation, the motor will be done. As long as your on a good load dyno like a Mustang or Dyno Dynamics, add timing till you see your tq start to drop slightly then back it off a bit. There is no generic this much boost takes this much timing. Its all gonna depend on your heads, cam, CR, intake manifold, etc... Everybodys car will be slightly different even if the setups are the same or similar.
Trending Topics
Registered User
Joined: Nov 2009
Posts: 32
Likes: 0
Thats the beauty of alcohol fuel. It absorbs a ton of heat quickly as it heads past the intake valve, and after that it burns cooler than any gasoline as well. We have had frost appear on intakes in extreme cases.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever
Verdad Gallardo
wow well i have 9.3 cr with afr heads an a vic jr and am gunna max out the D1 procharger so like 18 pounds of boost if i run e85 do yall think i will need a meth kit still or does e85 keep it cool enough?
Registered User
Joined: Nov 2009
Posts: 32
Likes: 0
Running E-85 your octane should already be pretty good. Water/meth injection will still help increase your resistance to detonation a bit and lend some consistency. The best benifit of running water meth is that maxing out your SC will create high IAT temps, the water/meth will dramatically lower your IATs.
