Thanks and a bit abotu me. Was:Re: [Diy_efi] TBI or TPI?

[Rick McLeod]

John Lingenfelter on Modifying Small-Block Chevy
Engines: High Performance Engine Building and Tuning
for Street and Racing 

--- Bret Levandowski <skishop69 at yahoo.com> wrote:

> Hey Rick, what did you say the name of that book by
> Lingenfelter was? I got delete happy before I
> finished reading. Thanks, Ski
> 
> Rick McLeod <dunvegan at sbcglobal.net> wrote:Now for
> me to learn, what is AFM?
> 
> BTW, from what I've experienced, forced induction
> manages easier w/ MAF than MAP as MAP is a
> calculation
> of air mas based on pressure and temp where MAF
> measures true air flow. I have cars w/ turbos both
> ways, and the more easily managed and more driveable
> seems to be the MAF based, but there are definite
> differences beyond that due to manufacturer, etc.
> I know little about supers so don't know how
> different
> that may be from turbos.
> 
> And, btw, I'm a uk'r at heart, well sort of, if you
> consider you're northern neighbors in Scottland :-)
> and a linux fan also, so would be interested in see
> the results of your final project, hopefully you'll
> hang around and post them upon completion. Good luck
> 
> --- Ashley Evans wrote:
> 
> > Ah, I see. Thanks for the info. I'll look up that
> > book. I'm not 
> > actually doing any conversion myself just
> interested
> > in how it all works.
> > 
> > For anyone who's interested i'm running an '89 BMW
> > 318i (m40 engine) 
> > it's a simple 8v sohc 4pot not great at the bottom
> > end but quite nice 
> > above 4k.
> > 
> > I'm going to be installing a unichip piggyback
> > management system to 
> > allow me to map it properly and facilitate a move
> > from AFM to either MAP 
> > of MAF. The community I'm part of
> > (www.e30zone.co.uk) rates the MAF 
> > conversion quite highly but I'm going to be
> > installing an eaton m45 
> > (mini cooper S) supercharger so I may go down the
> > MAP route from the 
> > beginning.
> > 
> > I do computer science at uni and for my final
> > project I'm hoping to 
> > create my own fuel (maybe igniton) computer based
> on
> > real time linux 
> > (I'm a huge linux fan!) that's really the reason
> > i'm here, and I just 
> > enjoy reading the various discussions... and
> flames
> > :)
> > 
> > Oh, I'm based in the London, UK btw.
> > 
> > Ashley.
> > 
> > Rick McLeod wrote:
> > > The late John Lingenfelter was one of the most
> > highly
> > > respected SBC authorities, he wrote a book
> > detailing
> > > modifying the SBC in many fashions, TBI, TPI,
> > RAM-Jet,
> > > LT/S versions, etc, including bolstering oil
> > systems,
> > > fuel, etc. I recommend getting a copy or
> borrowing
> > one
> > > from the library if doing any SBC work, it saved
> > me
> > > many headaches building both my TPI's.
> > >
> > > BTW, TPI is Tuned Port Injection, a form of
> > multi-port
> > > injection using a long runner design that was
> > > originally optimized to the 305, but adapted to
> > the
> > > 350 with good sucess. It falls apart at high
> RPM,
> > mine
> > > virtually quits at about 4500, but at 1000 rpm
> it
> > will
> > > put a moderate hill without downshifting, and
> > cruises
> > > at 75 to 80 at 30MPG at about 2400 RPM. This is
> > torque
> > > at it's finest!
> > >
> > > To make your choice, it depends on your needs,
> are
> > you
> > > going to drive it much, if not don't spend the
> > > time/money on TPI, but you'll really like what
> it
> > > brings if you go that route.
> > >
> > > BTW, I run a 700 trans w/ a 2400 stall
> converter,
> > > really comes off the line hard and strong since
> it
> > is
> > > well on top of the torque curve at launch, but
> w/
> > the
> > > lockup converter it doesn't impact MPG (read
> claim
> > > above).
> > >
> > > Hope this helps. 
> > >
> > > --- Ashley Evans wrote:
> > >
> > > 
> > >> Thanks, I even fully understood your
> description.
> > >>
> > >> So what is TPI? is that direct injection?
> > >>
> > >> The discussion on low end torque being better
> on
> > >> TPI, is that related to
> > >> the manifold length?
> > >>
> > >> Does anybody have links to the equations and
> > theory
> > >> etc related to
> > >> manifold design, volume, length etc. And info
> on
> > >> the resonance flap
> > >> used by some manufacturers?
> > >>
> > >> I'm sorry to hijack the thread with so many
> > >> questions :-/ Feel free to
> > >> ignore me.
> > >>
> > >> Regards,
> > >> Ashley Evans
> > >>
> > >> On 14/9/2005, "Rick McLeod"
> > 
> > >> wrote:
> > >>
> > >> 
> > >>> you're correct, TBI is Throttle Body
> Injection,
> > >>> 
> > >> which
> > >> 
> > >>> usually is the use of a carburetor body w/
> > >>> 
> > >> injectors
> > >> 
> > >>> to replace the atomization function under
> > computer
> > >>> control (other primitive means are used also).
> > >>> Therefore, most all intake manifolds are
> > relatively
> > >>> easy to conver to TBI, and I believe companies
> > such
> > >>> 
> > >> as
> > >> 
> > >>> Holly and Edelbrock and others make simple
> kits
> > for
> > >>> this.
> > >>>
> > >>> --- Ashley Evans wrote:
> > >>>
> > >>> 
> > >>>> Sorry for the n00b. question. I mostly lurk
> > >>>> 
> > >> here
> > >> 
> > >>>> to read and learn.
> > >>>>
> > >>>> TBI and TPI mean what??
> > >>>>
> > >>>> I thought that TBI means Throttle Body
> > Injection,
> > >>>> 
> > >> or
> > >> 
> > >>>> am I sorly mistaken?
> > >>>>
> > >>>> Regards,
> > >>>> Ashley Evans
> > >>>>
> > >>>> On 14/9/2005, "Rick McLeod"
> > >>>> 
> 
=== message truncated ===>
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