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On 13 Mar 2003 at 11:56, Cool43whip@aol.com wrote: > In response to Jim and Bob's letters. I am running a 311 905 205 L dizzy, but I > also have a 311 905 205 AG, and a 009 which I have on a spare type 1 motor that > I built. I would prefer to use one of the T3 distributors because the petronix > pick-up I bought is specific to t-3's Both type 3 dizzy's are combination vac > and mech advance units. I just ran out and tested both with a vacuum pump and > the plate inside the unit moved accordingly. Also as far as advancing > mechanically, both seemed to advance slightly with light finger pressure.Which > would you recommend I use? The 311 L dist is an excellent dist and you should use it. It's the OE dist for the 68-9 MT FI. To test the mech adv, grab the rotor by hand and twist it to the right. It should move about 15 deg and then stop. It should snap back quickly when you let go of it. There will be some free play that is just in the distributor drive; you can ignore that. You probably can't use the vacuum half of this dist with your carbs at all, because this dist is not matched to the vacuum properties that you'll get out of the carbs, but once you get the mech adv working you won't need it. FYI, the vacuum portion of the FI dist is ONLY a fuel economy device and ONLY comes into play at light throttle and light load (cruising.) Your carbs give out a vacuum that is proportional to load, which is not what this dist is expecting. -- Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ------------------------------------------------------------------- List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org