TranceNRG
15+ Year Contributor
- 43
- 2
- Nov 13, 2005
-
Detroit,
Michigan
THIS WILL BE RESERVED FOR ADVANCED E85 QUESTIONS, NOT "IS IT POSSIBLE?" THE BEGINNER E85 THREAD IS HERE FOR THOSE TYPES OF QUESTIONS ---> http://www.dsmtuners.com/forums/newbie-forum/59040-e85-ethanol-corn-gas-beginner-merged-5-24-8-a.html?highlight=E85+MERGED
HOPEFULLY THIS WILL MAKE THE INFORMATION MORE CENTRALIZED AND EASIER TO FIND FOR THE DSM'rs WHO ARE SERIOUSLY WANTING TO DO THE CONVERSION OR HAVE DONE IT AND HAVE MORE DETAILED QUESTIONS. Below is a quick Ethanol/E85 (Advanced) rundown before you start reading through the merged threads, maybe this will answer you question a bit sooner. To quickly navigate this thread for keywords use the "SEARCH THIS THREAD" tool located in the top right hand corner of this post.
THANKS,
GOFER
HOPEFULLY THIS WILL MAKE THE INFORMATION MORE CENTRALIZED AND EASIER TO FIND FOR THE DSM'rs WHO ARE SERIOUSLY WANTING TO DO THE CONVERSION OR HAVE DONE IT AND HAVE MORE DETAILED QUESTIONS. Below is a quick Ethanol/E85 (Advanced) rundown before you start reading through the merged threads, maybe this will answer you question a bit sooner. To quickly navigate this thread for keywords use the "SEARCH THIS THREAD" tool located in the top right hand corner of this post.
THANKS,
GOFER
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Like the title says, what did you use to convert to E85?gofer said:The stock tank and fuel lines will work fine running E85 and you don't have to change timing on your car when you convert to E85. The smallest pump you'll want to run is a Walbro 255 (rewired), its convenient because it drops right in with a cheap install kit and its a bit cheaper then a Bosch. When you upgrade to such a high flowing fuel pump you'll also need to grab a adjustable fuel pressure regulator (AFPR) to keep everything in check. I also suggest (its not necessary) to upgrade to a FueLab fuel filter with a 40 micron metal element, the Ethanol will eat the OE paper filter over time.
Depending on what time of year it is or your location will determine what type of Ethanol you have available at the pump. Gas stations receive E100 (100% Ethanol) year round and then blend it with 87 octane gasoline and depending on the blend (E85 or E70) it will change the ethanol content rating, octane, and specific gravity of the fuel itself. The typical blends are summer (E85) and winter (E70) which is the MINIMUM amount of ethanol blended with gasoline.Winter blend (E70)- 70% E100 (113oct) and 30% pump (87oct) with a final octane rating of 105.
Summer blend (E85)- 85% E100 (113oct) and 15% pump (87oct) with a final octane rating of 109.
FINDING OUT WHAT INJECTORS YOU NEED
Since the chemical makeup of ethanol is different you must account for it in your injectors flow rating. To do so you use the following equation by inputing the injectors flow rated on gas multiplied by 0.67. For example, I'll use 750cc injectors and estimate the flow capabilities of them running E85.750 x 0.67 = 502.5After you make the switch to E85 your 750cc injectors will flow 502cc which you'd find out isn't even enough to support the airflow of a 16g turbo.
For you mathematicians, you can also do the equation backwards if you know what size of injectors you would need for you turbo setup on pump gas. For example, a 20g turbos max airflow is 52 lbs/min so on pump gas you would need 880cc injectors to support it."pump rated injector flow" x 0.67 = 880After doing the above equation you find that a 1300cc injector will flow about 880cc which is what you want to support a 20g, so before you convert to E85 you need to get 1300cc injectors!
"pump rated injector flow" = 880 / 0.67
"pump rated injector flow" = 1313cc
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