<VV> make Corvairs less "aromatic"

[shortle]

Agreed. HC=hydrocarbons. CO=carbon monoxide. NOX=oxides of nitrogen. 1 way to reduce NOX is to lower the combustion chamber temperature which is why VW (and probably Porsche) started using an EGR (exhaust gas recirculation) system. For awhile in Calif. they (smog repair mechanics) started using a "valve" which reduced the amount of vacuum advance thereby reducing NOX. But our Corvairs were mainly into reducing CO and HC's with the (smog) air pump. I don't know if they were even concerned at the time w/ NOX.
Timothy Shortle in (SMOG FREE) Durango Colorado


-----Original Message-----
>From: Mark Corbin <airvair at earthlink.net>
>Sent: Oct 12, 2010 5:03 PM
>To: shortle <shortle556 at earthlink.net>
>Subject: Re: <VV> make Corvairs less "aromatic"
>
>Tim,
>
>Actually, it was emissions. Same reason Porsche dropped it in '99.
>
>-Mark
>
>> [Original Message]
>> From: shortle <shortle556 at earthlink.net>
>> Subject: Re: <VV> make Corvairs less "aromatic"
>>
>> 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
>>
>
>