[Healeys] Acceptable CO

[Richard Ewald]

More later, I'm real busy now, but HC is high when the car is rich and when
it is lean, so looking at HC alone does not help.
Rick

On Fri, Jul 6, 2012 at 10:44 AM, David Porter <frogeye at porterscustom.com>wrote:

> This is interesting, but isn't HC level the level that ultimately
> determines
> the CO level? My '54 doesn't seem to have a CO adjustment.. ;~)
> dave
>
> frogeye at porterscustom.com
>
> Porter Customs   2909 Arno NE
> Albuquerque, NM USA 87107
> 505-352-1378
> 1954 BN2  1959 AN5
> Porter Custom Bicycles
>
> cars:
>  www.britishcarforum.com/portercustoms.html
> gallery:
> http://picasaweb.google.com/porterscustombicycles/PorterCustomBicyclesStuff
>
> GO HERE: http://porterbikes.com/  nice pictures-fun facts-my world
>
> -----Original Message-----
> From: healeys-bounces at autox.team.net [mailto:
> healeys-bounces at autox.team.net]
> On Behalf Of Richard Ewald
> Sent: Friday, July 06, 2012 10:41 AM
> To: Richard Kahn
> Cc: Healey List
> Subject: Re: [Healeys] Acceptable CO
>
> Two percent is natural?  I would love to see a cite for that.  According to
> Wikipedia on CO air contains about 0.1 part per million by volume.  OSHA
> limits long term exposure to 50 PPM  Both of these numbers are way way
> below 2%
> A CO meter is zeroed at ambient air, which might have a couple of PPM.
>  Back in the day when I did smogs, I worked in a shop next to a very busy
> freeway.  The air was not quite as pure as I would have liked, and several
> times I did smogs that showed negative CO from the exhaust on modern cars.
> At sea level, the cars with SU I have set up are most happy at about 6.5-7%
> CO at idle.  I would expect similar results at altitude.
> Rick
>
> On Fri, Jul 6, 2012 at 8:55 AM, Richard Kahn <tahoehealey at hotmail.com
> >wrote:
>
> >  One exhaust pipe reads 4%, the other almost 5%. two percent is natural
> to
> > the atmosphere at sea level. I'm not sure what it is at 6500 ft but the
> > instrument is "trued" to 2% befor using. I guess that is rich mixture but
> > it runs great.
> > Richard Kahn
> >
> > ------------------------------
> > Date: Thu, 5 Jul 2012 11:19:34 -0700
> >
> > Subject: Re: [Healeys] Acceptable CO
> > From: richard.ewald at gmail.com
> > To: tahoehealey at hotmail.com
> > CC: healeys at autox.team.net
> >
> >
> > What percentage CO do you have currently?