At 07:12 PM 11/6/98 -0500, you wrote:
>On Fri, 6 Nov 1998 Dyno05@aol.com wrote:
>
>> The times I have posted with my R/T were all done with no Nitrous and with
>> radials. The 14.60 was done in 58 degrees with 50 percent humidity. I have
>> run 14.65 in 78 degrees but 39 percent humidity. This vehicle likes low
>> humidity and a cool motor. In about 75 degrees with 50 percent humity I
>> average, 14.80 to 85. The first time I raced it bone stock I ran a 15.09
with
>> the airbox out. 15.25 is my worst time ever, with real bad wheelspin, and
on a
>> hot humid day.
>> The only modifications I have done is a JET stage 2 module and my own fresh
>> air intake. I remove the tailgate and spare tire( worth 135 lbs) My best
>> 60 foot time and it is my average is 2.00 seconds flat. I get the best
launch
>> by spinning the hell out of the tires in second gear for about 4 seconds, and
>> then proceeding with 2 dry hops, or until it hooks hard. Then I stage and
mash
>> it hard on the last yellow. That gives me a 2.0 always. if it spins bad, on a
>> bad run, I get a 2.2 But with a good burnout on the stock RSAs, I have no
>> problems. On the juice however It will run low 13s on radials.
>
>
> Those are some good times, for sure! Awesome 60' times for radials
>too! (What psi do you run in the tires?) My best 60' is about 2.08
>so far, with 2.1 - 2.2 being my average.
>
>
>> As I said earlier, I just purchased slicks and will be trying spraying out of
>> the hole next fri. It should ,if my calculations are correct , should go high
>> 12s. The nitrous kit I have is a very simple one, It is from compucar, it is
>> caleed the street heat system. It is very very stealthy and takes only
about a
>> half hour to put in. No solenoids or extra lines to run. Just a simple
bottle
>> mounted in a duffle bag, the solenoid is on the bottle, you run the line into
>> the tube after the airfilter . That is it. You plug in the solenoid to
your 12
>> volt source and the button is in there too. The o2 sensor senses a lean
>> condition from the extra oxygen in the nitrous, and in turn automatically
>> enrichens the fuel. I have made about 12 passes with it with no ill effects.
>> I have noticed some surging though in the top of second gear and third
but not
>> often.Only on 3 runs did it surge, and only once did I deem it neccesary to
>> get out of it. Feel free to mail me direct if you have any speed secrets or
>> want any tips from me.
>
>
> YIKES!!!!! YIKES!!!! YIKES!!!! =(
>
> You mean there is no fuel enrichment whatsoever? What about a fuel
>pressure cutoff? You're playing with fire there... The engine does
>not use the oxygen sensor at WOT, only at partial throttle. At
>WOT, the computer uses lookup tables to determine the amount of fuel
>to use, and doesn't even look at the oxygen sensor! You can run full
>lean at WOT, and the engine won't care and won't do a thing to prevent
>it. They're set up to run rich at WOT, but not nearly rich
>enough to compensate for nitrous! Bruce (a fellow DMLer) was getting
>a lean condition on his '98 R/T just from a larger (700cfm vs 500cfm)
>throttle body, so I'd hate to see what your A/F ratio is when you're
>on the juice!!
>
> If I were you, I'd immediately stop using that setup at least until
>you have a way of determining the air/fuel ratio when the juice is on.
>(If for no other reason than to satisfy your curiosity.) Depending
>on your paranoia level, you might also want to tear into the engine
>to make sure that you haven't damaged something already.
>
> You might have some trouble trying to explain to your local
>Dodge service manager why your pistons look like someone went
>hog wild with an oxygen torch... They might refuse warranty
>service (pretty obvious that nitrous use was the cause) and
>you'd be shopping for a new engine out of your pocket...
>
> Do what you like, but I just got the heebie-jeebies when I read
>your post; you're playing russian roulette there fer shur...
>There's an excellent book about nitrous oxide written by David
>Vizard in the SA Design Series (I think...) Its available through
>Summit, and I highly recommend it to anyone using or considering
>the use of nitrous. Read through it once, and I think you'll
>get the heebie jeebies too! ;-)
>
> Good luck!
>
> -Jon-
>
> .--- stei0302@cs.fredonia.edu ----------------------------------------.
> | Jon Steiger * AOPA, DoD, EAA, MP Race Team, NMA, SPA, USUA * RP-SEL |
> | '96 Dodge Dakota v8 SLT CC (14.58@93.55), '96 Kolb FireFly 447 |
> `--------------------------- http://www.cs.fredonia.edu/~stei0302/ ---'
>
>how did you do your fresh air intake if you don't mind me asking.
scott
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