Motor finally assembled and nearly ready to drop in. Debating fuel.

B18b1

Skunk 2 Intake manifold/stock tb
Crower springs
No cams yet (considering Delta 272 grind, or perhaps a custom grind)
Eagle rods
10:1 compression 81mm
Ramhorn manifold
3" turbo back
hx35/40 hybrid 14cm2 6 blade compressor wheel

Million dollar question.............. 92 octane, or e85?

Only downfall, closest e85 gas station is 25 miles away, but I would get a 55 gallon drum. I would get 1600cc injectors, and perhaps a larger fuel pump (currently 255 with stock lines)

I am limited to ~19-20 psi on 92 octane, and I think ~25-30 psi would be a blast with this HX35/40. My motor/setup can handle the power, I would guess ~475whp on 30 psi, which sounds so fun with a LS. Ive had a 293, and 362whp ls in the past. Built a lsv, sold it, and built a LS again.

Few questions

How boost can be safely ran with e85 without questioning the fuel system? This turbo is known to be used @ 35-40 psi.
How much power can be made with 1600cc's on e85? What about 2000's?
How far will stock lines get me on e85, power wise? Ive read 450-475whp? I have a ss line from the filter to rail, I think its a 8an, or 6an, been awhile.

Thanks guys

 

I wouldn't talk about boost, but torque and horsepower. You can boost over 50 PSI if you want, but if not properly tuned, you won't get good dyno numbers.

For 450-480WHP 92 octane would be fine. Also you can get a Methanol kit (like AEM).

Using 1600's on e85 you will get ~500HP at crank, using 2000's you can achieve near 900.

 

1600cc should get you 600whp no problem, I made over 600whp on ID1000's and right now my car made over 900whp on 4 ID2000's and e98. ID2000's will get me to 1000whp as well.

I also used stock lines on 600whp and ID1000's but once I made the switch to ID2000's I also got an FCS fuel cell, all new fuel lines and two Bosch 044's.

 

If you can justify the hassle, i vote E85. You can also get a dual tune...one for E85 and one for pump. I used to run a strictly E85 map and it was a headache if/when you need to drive longer distances, especially into areas you're not familiar with.

 

I wouldnt push past 450whp on 92. That is one bad batch of gas away from detonation city (I had a bigger turbo, more efficient setup then you on 30lbs around 500whp that detonated and forced a rebuild).

If you want more then that go E85. 1600's would be easy 650whp, and the stock fuel lines are good for about that max. Beyond you'll need to upgrade

 

Thanks for the replies guys. I kind of forgot I made this post. Looks like I'm going to go with e85.

Do you think my rc 1000's and walbro 255 will get me to 475-500? I always have to remind myself its a non vtec head, which will not make as much horsepower as a vtec head, so it will take more boost and fuel to hit my goals.

So what fuel were you using with the 30psi, e85, right? and you're saying detonation caused it? please don't say 30 psi on 92 octane..

 

Uhm, that literally is what he just said. Furthermore, lightningteg know what he's doing, as he said one bad tank of gas and boom, it's gone.
I would imagine you could get to at least around that range, especially on e85. Just because it's an ls head doesn't mean it can't push big numbers. The main difference with your setup is that you're maintaining 1.8l as opposed to lightning's 2l.

 

Be forewarned that E85 is temperamental about being stored, it absorbs moisture... If you are going to get it 55 gallons at a time then make sure you have a proper drum and some way to move it (55 gallons of E85 weighs just over 362lbs excluding the container).

As far as the drum, either try to find a local with an empty fuel drum or find a local that sells surplus drums... There's a guy near my dads house that sells drums. Everything from the blue drums that syrup or beverages come in (we use them for water) all the way to stainless drums (we use for fuel). Obviously a plastic based drum wouldn't like the ethanol content, plain steel drums can corrode if the internal coating is damaged or aged. We've had good results with the stainless drums. Just be sure that whatever kind of drum you get has the metal plug with a single or double o-ring like the drums VP uses. Also whatever you buy will likely have plain old rubber o-rings (again not e85 friendly) so pick up some viton replacements.

I would strongly suggest you pick up an ethanol fuel stabilizer and use it. You can get e85 sta-bil from walmart. It will help stabilize the fuel and minimize moisture absorption and fuel degradation

 

No. I was totally maxxed out around 470whp on E85 with 1000's and a Walbro 255. I got a Walbro 450 and was able to kick up the pressure to 55-60 base and got the 1000's to do 567 later on.

Yeah it was 30 on 93 lol. You could say I was feeling a bit wreckless, but it went on fine for a few months. Timing was very conservative but it got cold one day and something happened. I dont know exactly, it was the one time i didn't datalog....

The cams and intake manifold make a bigger difference.

 

Here's a simple calculator to help you determine injector sizing for e85

Flow Calculator

 

im plaining to run a aem 320 e85 pump stock lines stainless fuel filter 1000cc grams with aem regulator. on my b20b turbo plaining on 500whp on e85 350 on cali 91 so you should beable to do the same if not more on pump. you mite want to do a 044 inline or get a bigger intake though. also id get crowler 403 or 404 for cams or brain crowler stage 2s as there a inbetween cams