Jtoroli
XS400 Enthusiast
I was rebuilding the Carbs on my Seca 400 this saturday. Everythign went together really well. I did however notice one weird thing. The factory manual calls out 117 main jet for one cylinder and 125 main for the other. Can't remember which was which. THis is a vertical twin and so unlike an aircooled ducati both cylinders received the same airflow. Typically I would runt he rear cylinder a little rich on my ducatis. The only think I can imagine is that the difference is to pass emissions or possibly limit top speed.
Can anyone shed light on the reasoning behind the different Seca main jet sizes?
Best,
Joe
Can anyone shed light on the reasoning behind the different Seca main jet sizes?
Best,
Joe