<VV> OBD-II for Corvair to make Corvairs less "aromatic" ?

[Mark Durham]

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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