I have friend who has a MORRISEY BRAVO that was built around a Tartan Twin many years ago. The Tartan has never been started. It is the glow version. We are thinking of converting by adding a CH ignition and changing the carb. I have been told the Walbro WT158 is a good carb for this conversion. Here are my questions and concerns.

What fuel mix (gas to oil ratio) will be required to run this engine on gas?

I have been told the power will be down after the conversion. How much power will the engine lose on gas?

Thanks