Benefits of a Cat

Rick,

The problem is that while carbs are much more ellegant, they cannot hold a precise A/F mixture during operation, thus the hydrocarbons out the tailpipes. Cats may be a temporary solution untill the fail due to the fluctuating mixture.

How confident are you on the condition of your engine? Assuming it doesn't have a too agressive set-up, a fresh engine in good tune shouldn't be too bad in terms of HC stink. Before you play with cats, check all of the external engine seals and gaskets, a tiny amount of hot oil on headers produces quite a smell. Also, if the engine is even a little tired it may get stinky.

Regards,

Art S.

 

If you use catalvtic converters to try and clean up a dirty engine, you will trade one smell for another, rmember the "rotten egg" smell when cats were first used on cars with carbs and higher emmision standards?

 

Its the un-burnt hydrocarbons that stink. Modern fuels tend to make older cars run fatter (rich) with standard jetting at idle. If you jet to get the low end hydros down you go lean at high load. The net result is that they smell bad at idle and can have a tendency to foul plugs especially if running a slightly more than stock cam grind. My 365 stinks at slow speed as well. If you did put cats on the car it would probably be cherry red most of the time trying to burn all the unspent fuel in the exhaust stream which would result in a new burning smell which would be your carpets.

http://www.jegs.com/i/Manhattan%20Oil/659/00032/10002/-1 Jegs and other offer smell additives. They simply mask the smells, but maybe it would work for her.

joe

 

Benefits of a CAT ?

... it makes you laugh many times a day
... it makes your home feel cozy


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