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On 3 Jan 2003 at 22:31, Russ wolfe wrote: > There are 2 different dual port heads for the FI T-3, with the > temperature sensor mount.. There is a step in the head where the > cylinder mates on the later ones that lowers the compression ratio. > I just tore an engine down that had one of each on it. Did your head with the step and boss also have the vent for the rocker box? I've always wondered whether there were actually 3 different DP FI heads: Early: 68-70/71 dual port, no step, no breather Mid (may not exist): 71(?) dual port, w/step, no breather Late: 72-3, dual port, w/step, w/breather -- ******************************* 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/