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 Post subject: Nitrous with E85
 Post Posted: Mon Aug 06, 2012 12:04 pm 
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Opinions wanted... =;
I am building a flat top 355 with vortec iron heads for my '55 Chevy. 91 octane pump gas deal, hope to make about 420hp. RPM intake, 1-5/8 headers, small solid lifter cam. Looking to run low 12's.
Eventually I want to spray it and run some high 10's with it. Thinking about 2 ways to do it.

1st, use a small tank up front for nitrous enrichment filled with E85. Running the engine on pump gas.

2nd, build an E50 carb and mix the fuel in the main tank to E50. When I get home, swap back to the pump gas carb and 91 fuel etc.


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 Post subject: Re: Nitrous with E85
 Post Posted: Mon Aug 06, 2012 12:11 pm 
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Joined: Sun Jul 19, 2009 2:14 pm
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Location: Rochester, NY
If you have a local source, why not just run E85 all the time? (or pump gas all the time)

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Rochester, NY
Quick Rod 130C
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 Post subject: Re: Nitrous with E85
 Post Posted: Mon Aug 06, 2012 12:26 pm 
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mslayton wrote:
If you have a local source, why not just run E85 all the time? (or pump gas all the time)


The closest E85 station is about 9 miles away. I have considered it.


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 Post subject: Re: Nitrous with E85
 Post Posted: Mon Aug 06, 2012 6:13 pm 
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Joined: Wed Apr 19, 2006 8:20 pm
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Location: N.J.
60 miles for me :-
but only 15 minuets from work =;

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running E85
Best ET 8.07
Best MPH 170.71
Barry


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 Post subject: Re: Nitrous with E85
 Post Posted: Fri Sep 14, 2012 8:50 am 
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nothing better than getting race fuel for 3.80$ a gal.
as my brothers cars gulp down c16 and q16 with his new combos

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 Post subject: Re: Nitrous with E85
 Post Posted: Thu Sep 27, 2012 1:37 am 
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ADAMSVEGA wrote:
nothing better than getting race fuel for 3.80$ a gal.
as my brothers cars gulp down c16 and q16 with his new combos


Very true. Love this stuff.

Ran the truck last Saturday night on nitrous with E85. Went from 129 to 149 =;
Here is the plug out of #4. 11.8-1 to 12.0-1 A/F on the gas scale.

Image
Image


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 Post subject: Re: Nitrous with E85
 Post Posted: Thu Sep 27, 2012 8:27 am 
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Pictures on the internet don't usually do justice to the true color of the fuel ring, but I'm going to assume that it's where you want it. Timing looks pretty good also as does the plug heat range. So what type of NO2 system is this and what were the jet sizes? :-k

And a very good job on the pictures too I might add. ;-)


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 Post subject: Re: Nitrous with E85
 Post Posted: Thu Sep 27, 2012 11:55 am 
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I would like to see it a little lighter on the fuel ring, and to move the timing mark towards the end of the strap. Its a not too original NOS cross bar plate with 73n jets. It was the first hit with both bars on, and I think there is a little left on the table.


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 Post subject: Re: Nitrous with E85
 Post Posted: Thu Sep 27, 2012 1:11 pm 
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Location: N.J.
How do you cut the plug like that at the track???

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running E85
Best ET 8.07
Best MPH 170.71
Barry


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 Post subject: Re: Nitrous with E85
 Post Posted: Thu Sep 27, 2012 1:15 pm 
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You can do it with a cordless Dremel and a cut off wheel. The one in the pic is done in the lathe with a hand grinder and cut off wheel.


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 Post subject: Re: Nitrous with E85
 Post Posted: Thu Sep 27, 2012 1:20 pm 
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Location: N.J.
Seems to be easier to see and that plug has 1 run on it and did you click it off in the lights???

Here's one of mine with 6 runs on it on E85 but no Nos..And driving it back to the trailer..
Image

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running E85
Best ET 8.07
Best MPH 170.71
Barry


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 Post subject: Re: Nitrous with E85
 Post Posted: Thu Sep 27, 2012 1:37 pm 
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When I ran on motor only with a -7 plug, they would look a lot like yours.
I click it off after I hit the stripe and it seems to take a second or two shut off. I then pull the 4 and 6 and replace with a used plugs to drive back on. The rest I will pull to see if the ground straps survive.


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 Post subject: Re: Nitrous with E85
 Post Posted: Fri Sep 28, 2012 6:34 pm 
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Camgrinder wrote:
ADAMSVEGA wrote:
nothing better than getting race fuel for 3.80$ a gal.
as my brothers cars gulp down c16 and q16 with his new combos


Very true. Love this stuff.

Ran the truck last Saturday night on nitrous with E85. Went from 129 to 149 =;
Here is the plug out of #4. 11.8-1 to 12.0-1 A/F on the gas scale.

http://drcamshafts.com/grudge92212/9.JPG
http://drcamshafts.com/grudge92212/9st.JPG


Hey John -- the plugs look real good to me. With a 20 MPH gain I'm guessing that converter is coming into its own now. You get it leaving hard on the spray?


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 Post subject: Re: Nitrous with E85
 Post Posted: Sat Sep 29, 2012 2:23 am 
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Hey Eric,
It leaves ok on spray. I tried to progress it in over 1.4 seconds. Ran a 1.41 60 foot time, but around 1.8 into the run it blew the tires off. with a softer launch it goes high 1.4's. Track prep has been hit or miss lately.


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 Post subject: Re: Nitrous with E85
 Post Posted: Sat Sep 29, 2012 10:47 am 
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Yeah, you're always at the mercy of track prep unless you run a ginormous tire.

I recently did a little experimenting with timing on mine and learned something you might find useful (on motor). I found I can leave a little harder (slightly better 60' time) with more advance (like 40*) below and just above stall RPM and then pull it back to 36-37* after launch. I wonder if you could do something similar with yours, say 40* timing on the hit and keep it there until the motor gets up on the cam?


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