bump

 

u don't need 80s to be on e85
Im on 60# 2.8 50hp shot of nos
on e85

 

Cause your not doing it right. 80's are a must with e85 for a safe setup. Your injectors are probably going static around 6000rpm

 

good info

 

my injections go static at 7500.
there is nothing wrong with using 60# yes Im pushing them a hard but that not all the time. the engine dosnt really care wat size injector it has in it as long as it can keep up and the 60# do fine...
wat is safer about using 80s a fuel ratio is a fuel ratio.

 

Have fun when an injector fails and the car goes dead lean

 

well I've been doing this for a almost a year with no problem.

 

I'm just going to keep the 80's on as recommended because it is safer! but if the 60's work then ill denote that

 

ID1000's FTW! lol

 

The cold start thing seems to give me problems when it gets cold, takes about 2 times to get her running after a cold morning and the car sitting. Other than that e85 is great I love it and I agree that 80#s should be used

 

sorry for being a ***** about it but I've had so many ppl tell me that 80s r required...but they r not its all in the tune. my 60# hold 11.7afr all the way to 7500rpm before it start to lean out to 12. i have a built engine cnc ported head and a m62 that has had a very extensive port and polish job done on it..my intake manifold has been cut apart and ported and polished. Im running a 2.8 on my m62 and get 18.5 psi by 7200 rpm..Im just trying to make a point here

 

I'm sure it does. I ran 42lb injectors over 130% injector duty cycle for quite a while. Does that mean you should or if its safe? No, not at all and no one should recreate that situation

 

Alright I edited the post saying it is possible but recommended to switch to 80#'s to make it safer.

 

Bump for more info. possibly before and after dyno's? anything else about e85 to keep in mind?

 

Well its official im getting dyno tuned at ZZP for E85 next tuesday. Ill post up my experience and numbers and what not. Im excited!

 

this post just talked me into doing it

what kind of power increase could one really expect switcing to this? i'm on 60#'s and 2.8" now, if i went to 80's e85 and a good (safe, very safe) tune, how much power/torque am i looking at? roughly ofcourse

 

I'm gonna guess 280's

 

so roughly 20hp? i'm SO in 8DDDD

 

You could make 290whp on that pulley and E85. Also, a good tune on E85 while being much more aggressvie than 91 (timing wise) will be much safer to run than even a somewhat aggressive tune on 91. The fuel just has such a greater margin of error, as the motor becomes much more forgiving when its happier (lower egts, more knock resistance).

Edit: I am going to add that I say that for the scenario above, E85 is the safer route, and for most setups on our platform. On our cars it seems to be the ringlands that break, due to knock, excessive EGT's, etc. The next thing is usually the sleeves. And again, with E85 the EGT's will be cooler resulting in a much "happier" engine. On many other platforms, where rods or bearings may be the weak point, E85 will not let you really push the envelope much safer than any other fuel. I say this because when you run E85 it is to take advantage of the cooling effetcs and the timing advance, and with timing advance comes more cylinder pressure, and cylinder pressure is what will kill rods in most cases. The integrity of the sleeve and piston will benefit greatly from cooler combustion temps, but the effect the temps have on the rods is much more minimal since they are not so much in the "line of fire" if you will. Basically, if you are tuned near the engines maximum safety threshhold, and you want to switch to E85, turn the boost down a little bit and get more aggressive with the tune to make the same power.

That doesn't all pertain to our platform, as 95% of people in here don't really ever have to worry about too much cylinder pressure for the LSJ/LNF, but it is still some food for thought for other platforms or the 2.2 guys.

 

Whats the average mpgs lsj peeps are getting on e?

And j.i.c. I am low on fuel and no e85 happens to b around can i put a gallon or two of regular 91 and get to next gas station safely?

 

And thanks for the explanation infaredline i appreciate that

 

Im on basically the same mods riceburner. Tuesday night ill post up my dyno and results. tune in then!

 

I get anywhere from 18-21mpg in town depending on where and how I drive. Ive seen as low as 17 and as high as 22 a few times. On the interstate its usually around 22-23, although I did get 27 mpg crusing at about 72 mph for a tank one time. I don't do much interstate driving though.

 

me neither. 18-22 sounds fair to me. right now (running pig rich bad tune) im getting like 21. used to get 24

i'm very excited to do this, its gonna be great making another 20ish horsepower, not to mention just having a good tune on the car finally should free up even more

BTW i'm lovin ur sig

 

are there any horror stories using e85? my buddy was swearing to me i'd be having serious engine trouble using it.said i'd blow a piston ring in no time. i doubt it.. either way this is safer than meth