<VV> make Corvairs less "aromatic"

[shortle]

Bill Hershowitz installed a cat on his '69 Monza Coupe. I'm not really sure why or what if any advantage there is. Our air cooled engines have very high combustion chamber temperatures which is why the NOX (oxides of nitrogen) are so high. I believe that is the reason VW quit trying to bring their air cooled cars to the US.
Timothy Shortle in (beautiful) Durango Colorado


-----Original Message-----
>From: J R Read <hmlinc at sbcglobal.net>
>Sent: Oct 11, 2010 9:13 PM
>To: Charles Lee <Chaz at ProperProper.com>, virtualvairs at corvair.org
>Cc: Dale Dewald <dkdewald at pasty.net>
>Subject: <VV> make Corvairs less "aromatic"
>
>Just a thought...  We already have PLENTY of heat to get rid of with our air 
>cooled engines.  What effect might a catalytic converter have in terms of an 
>additional heat source?  I'm not saying don't do it, just give it due 
>consideration before jumping in.
>
>There was (maybe still is) someone on VV who had a cat converter on a LM 
>about  2 or 3 years back.  I don't recall who.  You might wish to do a 
>search?
>
>Later, JR
>
>
>----- Original Message ----- 
>From: "Charles Lee" <Chaz at ProperProper.com>
>To: <virtualvairs at corvair.org>
>Cc: "Dale Dewald" <dkdewald at pasty.net>
>Sent: Sunday, October 10, 2010 12:30 AM
>Subject: Re: <VV> OBD-II for Corvair to make Corvairs less "aromatic" ?
>
>
>> 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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