914 race motor issues This topic contains 0 replies, has 1 voice, and was last updated by tgiertz 3 months, 1 week ago. Author Posts December 11, 2018 at 5:02 pm #3938 tgiertzKeymaster I just built a new 2.0 litre engine for my 914. I had to go from 135 to 180 jets. I have a bobble from 3800-4100rpm. Timing is at 33 degrees. Maybe I need smaller venturis to speed up the air. Share your 2ndCar! Author Posts You must be logged in to reply to this topic. Share your 2ndCar!