[WRC] Rally Estonia 2022

**logic** · 14th July 2022, 17:14

Originally Posted by AnttiL

And I think they can do lots with the software

Software along with friction losses can amount to as much as 10 more hp.

If they go away from the traditional engine build philosophy you can free up many more HP, where as the usual brief is to have as much torque as possible for drivability. So if you go to add power there are many things within the parameters that you can change to achieve this.

**EstWRC** · 14th July 2022, 17:24

Superb air shots of Tartu!

**WRCStan** · 14th July 2022, 17:30

Originally Posted by mearioEnrico

AFAIK only spark plug, piston, intake and exhaust manifold can be modified.

Add 0.5hp to the previous engine spec and you have a more powerful engine. Marketing is part of the business.

If piston includes conrod length, that can change power and torque through geometry IIRC.

**Fast Eddie WRC** · 14th July 2022, 17:44

I just read that the engine development 'freeze' was actually a freeze of the regulations, not of development of an engine itself within those regulations.