Welcome Daniel.
We have some nice how to’s on this subject and many more. You can find them over here: how to’s
But since your new and this site is in Dutch I’ll get you started. Below this there’s a little explanation on your questions, supplied with links to the appropriate how to’s. Hope this helps you.
You can enlarge your inlet to 13mm and file the inlet port a little bit (this will also adjust the timing so it’s important you take this in account when milling the crankshaft).
How to tune your inlet
If you place the bottom gasket of the cilinder on the crankcase you can trace the ports onto the carter with a marker. This way you know where to remove material. But be very careful with large crankcase. It’s rather thin and easy to make a hole in it.
How to tune your crankcase
For the crankshaft you’ll have to do some measurements and calculations to know how much you can remove.
How to tune your crankshaft
The deps already has a pretty big exhaust port. But if you still want to alter the timing or enlarge it you’ll have to do some measurements and calculations again.
How to tune your exhaust port
Mücke95 wrote:
Hope it is the right category.
It is now 🙂