New List Participant - very new

[Don.F.Broadus at ucm.com]

The new snowmobiles have FI, Polaris is one brand, you might want to take a
look at. The injectors and Throttle Body
 might save you some time. The ECM looks  totally sealed so not much can be
done with that.

	-----Original Message-----
	From:	Jemison Richard [SMTP:JemisonR at tce.com]
	Sent:	Wednesday, September 30, 1998 12:31 PM
	To:	'diy_efi at efi332.eng.ohio-state.edu'
	Subject:	RE: New List Participant - very new

	Gene,

	Thanks for your response.  So you're saying the new IAC I put in is
not
	working correctly?  Just want to make sure I'm understanding my
problem.  I
	followed the instructions as closely as possible.  Checked the
plunger
	extension <1.125" prior to installatation.

	On the bike (or any engine) - as the only DPFI I have any
familiarity with
	right now is a Saturn, and as I've noticed that the plenum does a
couple of
	nice things 1) houses the PPM, TPI and IAC and provide both ports
and
	mounting points for the actual injectors and 2) these ports are VERY
close
	to the intake port spacing on the engine I'm initially trying to
adapt - I
	was thinking this piece would be a good place to start and would
solve a
	good many of the mechanical problems.  I also believe in UFOs so I'm
curious
	what your thoughts on this would be.  BTW, very soon I'll be able to
scan a
	pix of this setup so you can see it better (you're probably not
familiar -
	or interested terribly) in Saturn DPFI, ha!  

	The other question you asked (air cooled is yes on my initial
project).
	Inline 4 - which is what a good many of the performance bikes are
today,
	hence important.  If I could get a system to work on this type of
engine - I
	could get one to work on a good many bikes (with a large user base
that
	might be interested).

	Rick
	Indy

	> -----Original Message-----
	> From:	mrvette [SMTP:mrvette at bellsouth.net]
	> Sent:	Wednesday, September 30, 1998 9:55 AM
	> To:	diy_efi at efi332.eng.ohio-state.edu
	> Subject:	Re: New List Participant - very new
	> 
	> on the Saturn,,...It most assuredly is the IAC.....on doing DPFI
for any
	> engine...the hard part is the mechanicals...getting the injectors
mounted
	> correctly, and a t-valve (air valve) in place.....if the bike is
air
	> cooled
	> engine, you mite have a problem with an engine temp sensor,   also
with
	> air
	> cleaners-filters,   all of this not so easy for the home mechanic
on a
	> bike as
	> ALOT of metal fabrication is necessary.....GENE
	> 
	> Jemison Richard wrote:
	> > 
	> > Hello and let me apologize in advance for the level of my
expertise with
	> > regard to electronic fuel injection.  I hope to learn much.
I've been
	> very
	> > impressed with what I've heard in the last few days.  I have two
	> questions.
	> > 
	> > 1)  I have a '92 Saturn coupe with multiport injection.  It
won't idle
	> very
	> > well at all and dies if the air conditioning is turn on (idles
worse in
	> gear
	> > than in neutral also).  It also has a miss (sudden jerking -
happens a
	> low
	> > to moderate speeds in gentle acceleration mode (20-40mph).
Pressing the
	> > accelerator enough to go into passing gear eliminates all
problems and
	> it
	> > runs fine - runs very well on top end also (for a Saturn).  I've
changed
	> the
	> > IAC (my codes were pointing to that).  Oh that Idle Air Control
Valve (I
	> > don't know what acronyms are standard yet!)  This car has a dual
	> overhead
	> > cam engine 1.9L.
	> > 
	> > 2)  The real reason I'm here is that I'm a motorcycle enthusiast
and
	> want to
	> > design (or adapt if someone much smarter than me has already
done this!
	> > This will NOT hurt my feelings any) an electronic fuel injection
system
	> that
	> > would be generic enough in nature to fit many similar engine
sized
	> Japanese
	> > bikes that were carbureted.
	> > 
	> >      At this point I don't even know where to begin.  Of course,
from my
	> > perspective, existing units are attractive but reprogramming the
control
	> > computers is a black box for me.  One thing I've toyed with is
single
	> board
	> > computers (SBCs).  I worked a bit with process control in the
	> pharmaceutical
	> > industry about 8 years ago and got some experience programming
these
	> guys.
	> > They're cheap and readily available and of late have a lot of
	> inexpensive
	> > digital and analog sensing options.  Big question is, has anyone
gone
	> down
	> > this path and if so, is it worth looking at?
	> > 
	> >      I again apologize for what are probably pretty simple (and
possibly
	> > silly) questions.  I'm just looking for some good initial
direction to
	> > pursue.  Any help will be gratefully received!
	> > 
	> > Rick
	> > Indy
	> 
	> -- 
	> 
	> 
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