Recent rebuild of 69 911T Engine to 2.2 E Specs.,using 2.2 P&Cs & reground T cams to E . Replaced the 40IDAs with 40 PMO's.

Herein lies the question, What have those who have the same config. done to optimize the PMOs. They are equipped presently with 32 venturies, 130 mains, 55 idle, f2 emulsion tubes, 180 Air-Corr.This is the latest update as suggested by Richard Parr. He has also mentioned that they have had success in shorting the length of the secondary venturies in the smaller disp. engines up to 2.2 .

Originally we were going to change the main venturies to 30mm as this was considered to be better suited to the small bore engines, along with the necessary changes to 125 mains etc.

The engine runs very good with the present set up but I think more improvement is possible & lean toward trying the smaller 30mm venturies.Let me know what has worked best for you. Im running the factory exhaust & have 150 PSI compression on each cylinder.

Thanks in advance