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On 11 Jan 2003 at 22:06, Dave Hall wrote: > Timing on TDC (the left-hand mark of the four) is OK for Fuel Injection (engine > number starts U...), but wrong for twin-carb (number starts T....), which is > timed on the next mark to the right (7.5 BTDC). This depends on the dist he's got. I believe he implied that he was using the original FI dist, so the timing he's using is at least close. > Retarded ignition would explain lack of power. Check the vacuum > advance can works OK too, while you're there. I'm not sure if that > distributor has any centrifugal advance - I think maybe not, but Jim > will put me right. A FI dist would have a vacuum can, but there's no way to use it with the Webers. Any attempt to use it would only result in the advance working the wrong way, hence counterproductive. > Some dismiss the retard of 3 degrees on the distributor cam for cyl 3 as > nonsense (or only used for pre-doghouse fan-housings on Type 1 engines). I > don't know if anyone ever bothered to put the timing light on no.1 and no.3 to > see if there's any difference in the firing point. I've done it often (with FI dists) and never seen any effect. There's always some noise in the timing, but I think I would have been able to notice 3 deg, not sure, though. The Bill Fisher book says that he was never able to find a dist with this retard. -- ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------ To unsubscribe, E-mail to: <type3-off@vwtype3.org> For more help, see http://vwtype3.org/list/