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Clive, so are you venting directly from the crankcase breather? If so I'm not surprised. What I did was route the crankcase breather back into the rocker cover (my bike can with the banjo bolts in the rocker cover). I then ran a breather from the other side of the rocker cover to my little oil separator which mostly catches moisture with a tiny bit of oil. There's generally far to much oil coming out of the crankcase vent to easily deal with. Hence Norton having to use the big air oil separator to get most of it but a lot of bikes still end up with oily airboxes and throttle bodies.Here's another experiment I did a few years back to see what was going on....[MEDIA=youtube]g-VkGfLa3-M[/MEDIA]
Clive, so are you venting directly from the crankcase breather? If so I'm not surprised. What I did was route the crankcase breather back into the rocker cover (my bike can with the banjo bolts in the rocker cover). I then ran a breather from the other side of the rocker cover to my little oil separator which mostly catches moisture with a tiny bit of oil. There's generally far to much oil coming out of the crankcase vent to easily deal with. Hence Norton having to use the big air oil separator to get most of it but a lot of bikes still end up with oily airboxes and throttle bodies.
Here's another experiment I did a few years back to see what was going on....
[MEDIA=youtube]g-VkGfLa3-M[/MEDIA]
