915 vs 916

There are quite a few structural differences between them. I can't find the video I wanted, but there is one out there that goes through the specific differences. Here's a short version. 

https://youtu.be/sq64N_4LF9k?si=5R9GX9mHqFcuSTR4

Thanks Jason - be interested to see the more in-depth video if someone can point towards it !

Hi Mark

the key to getting the TBO higher, with additional HP, are the changes internally in the crankcase and crankshaft.  These parts are physically stronger and that is the major reason they were able to increase TBO.  Unless they make a new version of the 915 with the new parts the TBO is likely not going to be increased on that model.

Cheers