I have a query re people's experiences of using 60s-70s Vane Tune Machines to try and get their 300s set up right, in best tune. A friend who had a garage has a Vane 3090 Tune Machine - oscilliscope, and about another 8 guages set into a large metal cabinet atop sortod storage cabinet on wheels - it ibncludes exhuast analyzler etc. The smart money today is spent on high quality, capable hand held instruments. The day of the large console with multiple instruments is dead. This OPINION is based on the large number of unsold big, new console units in warehouses as I understand the situation. Most shops, the large console just collects dust and gets in the way. The older equipment does have historic, antique value. Exhaust gas analysis is a very useful tool but limited in usefulness based on what other equipment is available like a dynamometer. Any old equipment also has the problems of repair parts availability and lack of calibration checking. Non dispersive infrared analyzers replaced the old wheatstone bridge air fuel ratio thermal conductivity analyzers many years ago. If the age you mention is correct, the unit probably has an AFR unit and is not an exhaust gas analyzer exactly that is looking at two to five gasses. If it is an NDIR unit then what bench is in it is important and if not say a Sun or Andros, would say would not be worth the investment. I have found that my old Clayton AFR unit is very handy for setting idle mixtures lets say and checking pre catalyst carburetors without air injection and also for dyno work but there is so much more available with four gas analysis that that is what we use. So, in my opinion, if you have an AFR machine that does work, please use it as it is the only way to properly tune carburetors. Balance your carburetors out at 13.5 AFR and you will be pleased. Seat of the pants does work but proper equipment to include a good diagnostic dynamometer puts you 'there' in way less time. Warren Anderson Sedona,AZ ------------------------ Yahoo! Groups Sponsor --------------------~--> Yahoo! Autos. Everything you need to know about buying or selling a car. FREE Quotes, 360° Tours, Research, Blue Book, Compare Vehicles, Buy Used http://us.click.yahoo.com/kEZsdA/bwnGAA/YiGOAA/8LmulB/TM --------------------------------------------------------------------~-> To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/