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Stefan, No the books don't state hardened valves. I read my comments and realized I may have added to the confusion. I've upgraded many older motors with hardened valves (not Saabs). That's what I was refering to when I stated you can't tell the difference between them. It is stated in many of my sales brochures from the early 1970's about the motors having hardened valves to run both types of gas. With only one part number, they've got to all be hardened. My parts books cover European and U.S. models. Having done valve upgrades on other motors, and also doing a valve job on my '73 B motor after running unleaded gas for quite some time, I can assure you that those valves/seats were hardened. I've contacted Saab USA as well as Saab in Sweden through the years on different matters. The people who could have helped you with concerns for older models are long gone...especially in Sweden. As far as converters go, they have nothing at all to do with lead in gas, but are for emissions. The lead emissions would simply kill a converter extremely quick. Therefore people associate converters with hardened valves. We used to have "test pipes" here in the states. You could buy them and install them in place of your converter to see if it was clogged. This was back when leaded was stiill available. When you realized your converter was bad, you were supposed to remove the test pipe and replace it with old or a new converter. Nobody did...they passed emission tests without them, and of course ran much better. Removing lead was a good thing for Mother Earth, but all the emissions crap that followed is a waiste of time. A few years back I had my '54 Chevy tested at the service station while I got a standard inspection. It passed the emission standards of a mid 90's car.
posted by 63.214....
, Mon, 18 Feb 2002 00:34:03
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