Thanks, to you too. I'm cataloging all of this
stuff.
Dick J
--- dahlgren <dahlgren@uconect.net> wrote:
> are you using alky for both?? did some testing
> with a noted pro mod
> engine guy and found that if you are running
> alky as the main fuel the
> nitrous likes gasoline better as an added
> fuel.. makes a little more
> heat and lights off much nicer. For whatever
> that is worth to
> you.......Oh and watch out with the dry nitrous
> systems they can cause a
> big problem depending on how they calculate the
> enrichment fuel and
> where you add the nitrous.. Most just add a
> percent of the base map fuel
> which is not the way to go at all.. Nitrous
> needs the same lbs/hr no
> matter what the rpm is! Unless of course you
> have an engine that makes
> the same HP all through the RPM range LOL!!!
> and if you add a lot of
> nitrous in the plenum all bets are off as to
> how much goes to each
> runner but the injectors are putting the same
> amount of fuel in each
> runner. Can have some very rich and some very
> lean cylinders. Been there
> done that got the pistons to prove it.
> Dahlgren
> Engine Management Systems
>
> "Thomas E. Bryant" wrote:
> >
> > John,
> > Hmmm! Don't know if I should help you on
> this??? You thrash me pretty
> > good without nitrous, but then I have no
> secrets.
> >
> > We run a Kinsler prepared Crower 2.5 inch
> injector with the nitrous
> > plumbed on the underside of the manifold. We
> use a NOS 200 HP system,
> > single stage system that is jetted with fixed
> nozzles (one fuel and one
> > nitrous) in each intake port. We use a holley
> fuel pump with an
> > adjustable regulator for the added alcohol
> when nitrous is applied. This
> > past year we went to a digital MSD that
> retards (adjustable) when the
> > nitrous is applied. We generally use the
> nitrous for the last 1 1/2
> > miles at Bonneville and in high gear at the
> lakes.
> >
> > We have two 10 pound bottles on board. I
> found early on that for best
> > performance you need a fresh bottle on each
> run. However, our fastest
> > run at the World Finals was a second pass on
> the same bottle. We use
> > about 3 lbs. per run.
> >
> > When I was running geared for 8000 to 8200
> RPM, the application was very
> > thrilling, like hitting passing gear, but
> with the present gearing
> > (7600) it is fairly soft, but still exciting.
> It can get loose when the
> > nitrous is turned on. Nitrous was the trigger
> for Jeff's spins.
> >
> > A word of caution, I carried a nitrous system
> on the car for a couple of
> > years before I used it because I was having
> trouble with a high speed
> > by-pass system on the injection. You have to
> be certain that the engine
> > is jetted correctly before using the nitrous.
> The nitrous system is
> > properly jetted, but if you are lean on the
> basic jetting, when the
> > nitrous comes on it gets expensive, and can
> shorten your week. I run the
> > fuel pressure on the high side to be safe.
> With gasoline, proper
> > pressure may be more critical, with alky
> being a little rich doesn't
> > matter that much.
> >
> > It's fun, but be careful. See you at Muroc.
> >
> > Tom, Redding CA - #216 D/CC
> >
> > John Beckett wrote:
> > >
> > > Tom
> > >
> > > OK, now that I have Nitrous on the
> brain...hmmm...that's interesting. I
> > > have a few questions for those who run the
> stuff on the 'salt' or lakes. And
> > > you have been doing it successfully for
> some time now. 1) I guess you run
> > > with a Hilborn style injection system. So
> how do you plumb the
> > > system...fogger nozzles? 2) Do you run 1,
> 2 or more stages? and
> > > approximately how much HP per stage? 3)
> Do you use a controller? 4) When
> > > do you first apply the Nitrous? certain
> speeds, RPM? 5) How much Nitrous
> > > do you carry and use per run? 6) What's
> the traction situation like when
> > > you hit the button?
> > >
> > > Thanks
> > > John Beckett
__________________________________________________
Send instant messages & get email alerts with Yahoo! Messenger.
|