Hi,
Yep, it is still acedemic. I was thinking about it last night and figured
you could pull it off with Webers as there's stock kits out there that'll
allow it. I'm trying to figure out/understand what the unintended
consequences would be, (insulating the lines from the exhaust is a good
one)...
Thing is, after seeing the shaved down B in the NAMGBR mag a few months
back, and seeing a B at British Car Day in Bowie MD last month that'd had
the same treatment, I figured someone on the list would had to have tried it
or seen it done, but no takers so far...
Scott
>From: James Nazarian Jr <jamesnazarian@netzero.net>
>To: Scott Allen <scottinarl@hotmail.com>
>CC: mg list <mgs@autox.team.net>
>Subject: Re: NO3 in a B?
>Date: Tue, 17 Jul 2001 12:04:56 -0600
>
>I think the biggest problem you would have with the MG setup is going to
>be injection jets. There are two ways to do nitrous that I am aware of,
>port injection (like fuel injection) and carb plates. Carb plates are a
>sprayer that fits like a carb spacer under any of your favorite
>neighborhood
>american holley pattern carbs.
>
>My best guess for a setup would be either a custom manifold to hold a
>square-
>bore holley (probably the easiest) or to mount nitrous and fuel jets into
>each port of the stock manifold. The extra fuel needs will come via fuel
>injection jets that are part of the NOS system. when the NOS is triggered
>it will fire the NOS and the aux Fuel jets, all of this happening after
>the carbs. Under NOS use, the only thing the carb is doing is controlling
>air, and since air is a function of volumetric efficiency, displacement,
>and RPM, and none of these are changing, the carbs will probably work.
>
>For non-NOS driving you will be using the carb just as always. When you
>are
>on the NOS, everything you care about will be happening past the carb, so
>you really don't care about it. Remember that the function of the NOS is
>to get about 6x the concentration of air into the engine as you could get
>with atmospheric air. All this because air is the limiting factor in
>combustion. This is the same way a turbo and a supercharger work - way
>more air.
>
>With that added air, you can use added fuel. For a forced induction car
>you are always using the induction so you always need the extra fuel; for
>NOS you only use it at WOT (wide open throttle) or via manual control
>(depending on setup) so you only need the extra fuel when you are using the
>NOS, hence the fuel jets that you will need for the setup.
>
>Depending on which of the above routes you went, you could buy a
>kit to do either. Once you installed the kit you would probably want to
>run a seperate fuel pickup, with high flow filter, to the fuel pump that
>undoubtedly came with the kit. It would probably be a holley red pump
>(~15psi).
>The last thing to consider would be if you went SUs and injectors in the
>manifold. Since our manifolds only have two ports, you would either be
>splitting the jets between the two cyls each port feeds, or you would
>need 4 jets in each port of the manifold (2 NOS, 2 fuel). This is
>important
>because NOS is rated by HP or 'shot' a 100shot (100hp) kit will give its
>power over the whole engine, so each jet is worth 25hp over a 4cyl engine.
>So, if you bought a 4-cyl 100shot kit, and installed half the jets, one
>each in each side of the manifold, you would only have a 50shot system.
>So, if you only put one set in each part of the manifold, you would buy
>the kit (or jets) twice as big as you want so that when they are split
>between two cyls they make the power you intended.
>
>Oh yea, you would also have to insulate the HE*! out of the lines, since
>our exhaust is right under our intake. This stuff is very explosive and
>the last thing you want is to burst a line and blow your car to
>smithereens. I wish I could show you pics of what happens when this stuff
>blows, but it looks like a missle hit the car.
>
>If you followed all of that you probably know enough to install one.
>Is this still purely academic? This is starting to sound fun.
>
>--
>James Nazarian Jr
>71 MGB roadster
>71 MGBGT-V8 in need of paint
>01 Impreza 2.5RS
>
>A complex system that does not work is invariably found to have
> evolved from a simpler system that worked just fine.
>
>On Tue, Jul 17, 2001 at 01:44:46PM -0000, Scott Allen profoundly declared:
> >
> > So do you think the dual SU would work?
> >
> > -Scott
> >
> >
> > >From: James Nazarian Jr <jamesnazarian@netzero.net>
> > >To: Scott Allen <scottinarl@hotmail.com>
> > >CC: mgs@autox.team.net
> > >Subject: Re: NO3 in a B?
> > >Date: Mon, 16 Jul 2001 11:18:05 -0600
> > >
> > >Big fuel pump. The primary cause of nitrous engines blowing up is too
> > >little gas, not too much nitrous. So you gotta make sure you get
>enough
> > >gas there. That would be my first step. The rest would come down to
> > >how much nitrous would you want to use?
> > >
> > >--
> > >James Nazarian Jr
> > >71 MGB roadster
> > >71 MGBGT-V8 in need of paint
> > >01 Impreza 2.5RS
> > >
> > >A complex system that does not work is invariably found to have
> > > evolved from a simpler system that worked just fine.
> > >
> > >On Mon, Jul 16, 2001 at 03:05:20PM -0000, Scott Allen profoundly
>declared:
> > > > All,
> > > >
> > > > This question, and the discussion that may follow is for purely
>academic
> > > > purposes.
> > > >
> > > > I helped a friend install a nitrous, (sp?) kit in his Japanese
>import
> > >last
> > > > weekend, and I was wondering if anyone had done this, or heard of
> > >someone
> > > > doing this with a B?
> > > >
> > > > I'm also wondering what you should/could do to the B engine, if you
>were
> > > > going to put a nitrous kit in to "beef it up" so it could take the
> > > > punishment.
> > > >
> > > > I know it'd be a foolish thing to do with a B, but I can't help
> > >wondering...
> > > >
> > > > Thanks in advance,
> > > >
> > > > Scott Allen
> > > >
> > > > 74 1/2 BGT
> > > > 52 TD
> > > > _________________________________________________________________
> >
> > _________________________________________________________________
> > Get your FREE download of MSN Explorer at http://explorer.msn.com
> >
> >
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