<VV> EFI Info Re: OBD-II for Corvair

[FrankCB at aol.com]

Mark,
 
A good idea to get started with this is to go to   _www.diyautotune.com_ 
(http://www.diyautotune.com)   and click on the  "Tech Articles" button to 
access a number of detailed (with pics)  articles.  The first is a conversion 
of a carbureted Chevy V-8 to  throttle body EFI.  Others cover multiport EFI. 
Whether you use the  MegaSquirt or go to an EFI from a production car, 
these articles will give you a  lot of insight into what's needed and how to go 
about it, step-by-step.
 
Incidentally, you can build your MegaSquirt from a kit of parts OR buy  one 
already assembled.  If you build it yourself, I recommend getting  a 
Illuminated magnifying glass light as well as a temp. controlled  soldering iron 
with a VERY small tip.  If you don't have experience  soldering micro circuit 
boards, I suggest buying the already assembled  unit.
 
Frank Burkhard
 
 
In a message dated 10/10/2010 11:01:07 A.M. Eastern Daylight Time,  
62vair at gmail.com writes:

Charlie:  I don't know what " Arduino" DIY circuit boards, are, but there is
a Mega  Squirt group you should check out. I think it was a bunch of college
kids  who designed the system, but there are a half a dozen places around  
the
country that sell mega-squirt ecm kits you can solder together that  is
totally programmable.

If you are in to the DIY stuff, that might  be a great way to go, however, 
if
you follow Ken Brown's blog and my "Lower  Cost EFI for Corvairs on Corvair
Forum, you will see that there are already  programmed and easily programmed
ECM's off GM cars you can get for a  fraction of the price, along with all
the sensors at ytour local pick and  pull, , and add that to the Corvair. I
bought my rebuilt ECM for $35. I  found a guy who can do the chip 
programming
for either $55 or $85,  depending on what needs to be done. There is lots of
info on other Chevy  forums on the EFI, and certain popular GM ecm's, that
lend themselves to  doing the mods.

Craig Nicol converted his 140 to a Fiero V-6 system and  did no
re-programming.

My EFI/DIS project is in gear. I've got all  the parts, plan to drive the 
car
one more time this fall, then its in the  shop for the conversion.

regards  Mark Durham

On Sat, Oct  9, 2010 at 10:30 PM, Charles Lee <Chaz at properproper.com>  
wrote:

> Thanks for the excellent ideas - I would never have thought  of a generic
> catalytic converter.
>
> The EFI/DIS lend  themselves nicely to other (digital) electronic 
auxiliary
> solutions,  such as Ken Campbell externally setting the high speed mixture
>  at
> speed, or the "Innovate" system to digitally control (or at least  
monitor)
> air flow dynamically, among other "engine-ious"  solutions.
>
> I have a great book on fuel injection by Bosch to  go along with Bob 
Helt's
> carb book both full of fun facts that lead to  thinking about improving 
the
> Corvair's air-quality-quotient, plus make  them eminently more reliable in
> the process.
>
> Maybe  electronic controls like Mike Mauro's air flow meters are just what
>  are needed to continually monitor the wide range of operating  conditions
> that drive the Corvair ?
>
> Has anyone used  Arduino DIY circuit boards to design your own controls ?
> They are  completely programmable and may provide an interesting solution 
 ?
>
> I'm still trying to NOT asphyxiate myself while getting mine  to run well
> enough to drive, and figure now's the time to investigate  my options ?
>
> Thanks for the insights !
>  Charlie
>
> ----- Original Message -----
> From: "Dale  Dewald" <dkdewald at pasty.net>
> To:  <virtualvairs at corvair.org>
> Sent: Saturday, October 09, 2010 9:17  PM
> Subject: Re: <VV> OBD-II for Corvair to make Corvairs less  "aromatic" ?
>
>
> > At 17:09 10/09/2010 -0400, Charlie  wrote:
> >
> >>I have heard on VV that Corvairs (and  other air-cooled engines) are not
> >>good
>  >>candidates for meeting air quality requirements due to the  high
> >>temperatures, (and poor construction tolerances  ?)
> >
> > It is not so much the operating temperature, but  the wide range of
> > operating temperatures that occur between idle,  coast, cruise,
> > acceleration, etc for an engine that is, for all  practical purposes,
> > "warmed up."  This necessitates rather  loose tolerances--by design--to
> > account for thermal expansion of  the various parts.
> >
> >>It seems like you have done a  lot of research and we might all benefit
> >>from
>  >>this to make Corvairs less "aromatic" ?
> >>
>  >>I can smell "classic" cars when they drive by me, and know that  my
> Corvair
> >>(also a 1967 Monza 110 PG) also does, and  would like to remedy that.
> >
> > Beyond making adjustments  to the carburetor jetting, you might consider
> > installing a  universal fit catalytic converter in the exhaust system.
> >
>  > Dale Dewald
> > Hancock, MI
> >
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