[Diy_efi] was tiny inj: now supercharger

elcamino73 elcamino73 at mindspring.com
Sat Jun 29 01:16:18 GMT 2002 

I've got an Accel single plane EFI manifold which has a Holley 750 carb
bored out to 1.6 bores to make what should be an 900 or so cfm progressive
four barrel throttle body.
http://groups.yahoo.com/group/supercharger/files/elcamino73/2002-04-15%2073.
bmp
On top of that will reside the secondary intercooler, The soon to be shiny
cap for it will stick through the hood.
http://groups.yahoo.com/group/supercharger/files/elcamino73/air%20to%20water
.JPG The charge air will flow through what would normally be the ambient
side with either freon or 32 degree water flowing inside it. The air to air
intercooler will be in front of the radiator.
http://groups.yahoo.com/group/supercharger/files/elcamino73/air%20to%20air.J
PG It is the larger of the three pictured. All the piping is 3", including
the mandrel bent 90 degree elbows. It is 90% installed at this point but
there is still a lot of work left.
http://groups.yahoo.com/group/supercharger/files/elcamino73/engine.JPG  As
you can see it uses a 12 rib serpentine drive belt dedicated to the blower.
I've got access to a machinist who can dice up a set of cog pulleys if the
serps slip. Which according to some one I trust more than ATI says will
indeed happen at 15psi. If I go that route I'll step up the blower speed to
65,000 RPM and try and pull 18 psi. I've got the fuel and air to do it.





Blown 407
ElCamino


----- Original Message -----
From: "The Punisher" <punisher454 at hotmail.com>
To: <diy_efi at diy-efi.org>
Sent: Friday, June 28, 2002 2:02 PM
Subject: Re: [Diy_efi] tiny injection


> Is youre throttlebody upstream or downstream of the "blower" ? and what
sort
> of intake manifold, and how are you hooking the whole thing up?
>
>
> >From: "elcamino73" <elcamino73 at mindspring.com>
> >Reply-To: diy_efi at diy-efi.org
> >To: <diy_efi at diy-efi.org>
> >Subject: Re: [Diy_efi] tiny injection
> >Date: Thu, 27 Jun 2002 05:17:35 -0400
> >
> >got ya! None of that applies to what I'm doing except the too expensive
> >thing. They wanted $175 for a choke pull off tied to a 1 inch butterfly
> >valve that leaked like a bitch when in the off position. I believe they
> >thought it was a blow off valve. Right back at them with that one.
> >
> >
> >Blown 407
> >ElCamino
> >
> >
> >
> >----- Original Message -----
> >From: "The Punisher" <punisher454 at hotmail.com>
> >To: <diy_efi at diy-efi.org>
> >Sent: Friday, June 28, 2002 5:29 AM
> >Subject: Re: [Diy_efi] tiny injection
> >
> >
> > > Whoa, hold on a minute. What I got started on here was building a
> > > Centrifugal supercharger for a "tiny" engine. I was talking a few
cubes.
> > > That can be done with a vaccum cleaner impeller and custom housing
real
> > > inexpensive and simple. The plumbing could be done real straight
forward
> > > with the butterfly upstream of the impeller with NO bypass or anything
> >like
> > > that.
> > >
> > > A car setup is ALOT different. The other poster here seems to have
alot
> >of
> > > experience in the R&D area of centrifugals, so he may be better
> >qualified
> > > for alot of this.
> > > I was just saying that doing a "tiny" engine didnt have to be done
like
> >a
> > > late model EFI car like what MOST of these seem to be targeted at.
> > > I installed Vortech, ATI, Paxton/Novi systems on 4th gen
F-body's(mostly
> > > LT-1's). Most were inetrcooled(one brand likes to call it AFTERCOOLED)
> >with
> > > air-air(ATI) or water-air(Vortech). In all honesty I dont think they
> >could
> > > have done very much different with their basic kit designs considering
> >the
> > > design criteria these things had to meet. I'm talking about the
plumbing
> >of
> > > the system, NOT the design of the blower itself.
> > > The engine compartments are TIGHT! the hose bends are TIGHT, The
> >clearence
> > > between the steering shaft and the "blower" inlet in some cases is
REAL
> > > CLOSE. The inlet hose has to make a 180 right at the blower and is a
> >REAL
> > > BITCH to put on in some cases. The hoses have a bad tendancy to slip
or
> >blow
> > > off at the worst times.
> > > The T-REX "booster " pump idea dont work very well(I took 2 of them
off
> >on
> > > the dyno because they werent making any difference). The belt's tend
to
> >slip
> > > alot, or the tensioners fall apart(ATI). I asked if anybody used cog
> >belts
> > > and was told that there tended to be alot of alignment problems.
> > > But here's the thing, on THOSE cars I dont see how you could do it
much
> > > different given the space, and requirement to leave most of the stock
> > > components alone.
> > > On something where you have alot of room and can position and plumb
the
> > > blower FIRST then place the accesories and evrything else AFTERWARDS
you
> > > could do alot better than those late model bolt on kits.
> > >
> > > I also happen to think that the "kits" are WAY WAY overpriced!! I
> >wouldnt
> > > bitch so much about the quality if I thought the quality matched the
> >price.
> > > But of course their typical customer is used to paying a fortune for
the
> > > parts on the late model "muscle cars".
> > > For example: On MY prefered type of "hot rod"(late 60's muscle cars) I
> >have
> > > been used to paying about $110-150 for an inexpensive seto of headers,
> >or
> > > about 250-300 for a REAL NICE set of headers. On a 4th gen F-body with
> >an
> > > LS-1 a good set of headders will set you back 600-900 bucks depending
on
> > > which kind(TTS are nice). They sure as hell aint made better than the
> > > 250-300 dollar classic muscle car headders I use.They dont leak less,
> >they
> > > dont flow better, they wouldnt make more HP on the dyno(with evrything
> >else
> > > equal), The exhaust sure dont bolt up easier, they dont have 2-3 times
> >more
> > > material in them to justify the price. Its all a bunch of marketing
> >CRAP!
> > > Try this, lookup the price for a cam from Comp cams for an LS-1, it'll
> >be
> >a
> > > HYD roller. Now look the price for a HYD roller Comp Cam for a
> >traditional
> > > american V8. The LS-1 cam may cost over twice as much as the others,
but
> >do
> > > you believe it costs twice as much to make?? HELL NO!! Sure maby the
> >first
> > > few batches while the tooling was being perfected(but most of it is
done
> >by
> > > CNC anyhow).
> > > This is one of My biggest gripes I have with these latemodel
centrifugal
> > > supercharger kits. Its rediculous, but I guess as long as guys line up
> >to
> > > plop down their money they'll keep on sellin 'em.
> > >
> > > OKAY, FLAME AWAY!!! :)
> > >
> > >
> > >
> > > >From: "elcamino73" <elcamino73 at mindspring.com>
> > > >Reply-To: diy_efi at diy-efi.org
> > > >To: <diy_efi at diy-efi.org>
> > > >Subject: Re: [Diy_efi] tiny injection
> > > >Date: Wed, 26 Jun 2002 18:44:45 -0400
> > > >
> > > >You've got my attention. I have built a system from scratch and it is
> >not
> > > >finished yet.
> > > >D1 Procharger, Accel single plane manifold, custom 4 barrel throttle
> >body,
> > > >large air to air I/C and second I/C to be figured out yet.
> > > >Stop being so darn general and tell me what you don't like about
"these
> > > >systems".
> > > >.
> > > >
> > > >Blown 407
> > > >ElCamino
> > > >
> > > >
> > > >
> > > >----- Original Message -----
> > > >From: "The Punisher" <punisher454 at hotmail.com>
> > > >To: <diy_efi at diy-efi.org>
> > > >Sent: Thursday, June 27, 2002 2:47 PM
> > > >Subject: Re: [Diy_efi] tiny injection
> > > >
> > > >
> > > > >
> > > > > THOSE systems are designed to be "bolt on's" without changing the
> > > > > intake/throttlebody/etc...
> > > > > They work okay for what they are, but there are ALOT of design
> > > >compromises
> > > > > made so they can fit in the crowded engine compartments of late
> >model
> > > >EFI
> > > > > cars. The majority of their customers dont like to modify things.
> >Based
> > > >on
> > > > > the criteria they are designed to meet, they just dont have much
> >choice
> > > >in
> > > > > the design.
> > > > > But if you were designing something from scratch, and it didnt
have
> >to
> > > >fit
> > > > > and look a certian way then there is alot of room for improvment.
> > > > >
> > > > >
> > > > >
> > > > > >From: "elcamino73" <elcamino73 at mindspring.com>
> > > > > >Reply-To: diy_efi at diy-efi.org
> > > > > >To: <diy_efi at diy-efi.org>
> > > > > >Subject: Re: [Diy_efi] tiny injection
> > > > > >Date: Mon, 24 Jun 2002 15:01:16 -0400
> > > > > >
> > > > > > > Full size car centrifugals like Vortech, ATI, Paxton/NOVI and
> >the
> > > >like
> > > > > > > expose the compressor to full atmospheric pressure at all
times
> >and
> > > >have
> > > > > >to
> > > > > > > have a "bypass" system open most of the time, This wastes
energy
> > > >during
> > > > > > > normal driving(its done this way to make the kits "bolt
on's").
> > > > > >
> > > > > >Is that to say that there is a better way to do this or is it
just
> >what
> > > > > >needs to
> > > > > >  be done by virtue of the design?
> > > > > >
> > > > > >
> > > > > >
> > > > > >_______________________________________________
> > > > > >Diy_efi mailing list
> > > > > >Diy_efi at diy-efi.org
> > > > > >http://www.diy-efi.org/mailman/listinfo/diy_efi
> > > > >
> > > > >
> > > > > _________________________________________________________________
> > > > > MSN Photos is the easiest way to share and print your photos:
> > > > > http://photos.msn.com/support/worldwide.aspx
> > > > >
> > > > >
> > > > > _______________________________________________
> > > > > Diy_efi mailing list
> > > > > Diy_efi at diy-efi.org
> > > > > http://www.diy-efi.org/mailman/listinfo/diy_efi
> > > > >
> > > >
> > > >
> > > >
> > > >_______________________________________________
> > > >Diy_efi mailing list
> > > >Diy_efi at diy-efi.org
> > > >http://www.diy-efi.org/mailman/listinfo/diy_efi
> > >
> > >
> > >
> > >
> > > _________________________________________________________________
> > > Chat with friends online, try MSN Messenger: http://messenger.msn.com
> > >
> > >
> > > _______________________________________________
> > > Diy_efi mailing list
> > > Diy_efi at diy-efi.org
> > > http://www.diy-efi.org/mailman/listinfo/diy_efi
> >
> >
> >
> >_______________________________________________
> >Diy_efi mailing list
> >Diy_efi at diy-efi.org
> >http://www.diy-efi.org/mailman/listinfo/diy_efi
>
>
>
>
> _________________________________________________________________
> Send and receive Hotmail on your mobile device: http://mobile.msn.com
>
>
> _______________________________________________
> Diy_efi mailing list
> Diy_efi at diy-efi.org
> http://www.diy-efi.org/mailman/listinfo/diy_efi
>




_______________________________________________
Diy_efi mailing list
Diy_efi at diy-efi.org
http://www.diy-efi.org/mailman/listinfo/diy_efi

More information about the Diy_efi mailing list