Greg@itmack wrote:

Hi all

I'm building an RV8 and I'm would like advice on 3 things. 

Will a turbo fit ok under the cowl of the RV8?

It will probably be a tight fit... I want to say I've seen pics of a -6 with one.. The exhaust makes an immediate turn down and then back, from the turbo, since the engine is mounted "backwards" with regards to car assemblies. You may want to consider a "plugs up" engine orientation, but that will involve further customization work on your part.

With a turbo will I still need a muffler and if I do can I get away with a much small and lighter constructed one without it self destructing by the exaust gas pressure?

I am not seeing/hearing of people running mufflers on the aviation turbo rotaries. That being said, when the wastegate valve is open, there is unmuffled exhaust being let out.

Am I better off buying the cowl from Vans with the snorkel out front for extra cooling?

  

I am betting that you will need more ducting/scoops than is provided for on the Van's cowl. You can add your self, or build a completely  custom one. Quite a few rotary guys can attest to Cooling airflow being a major consideration for both oil and water cooling.

Thanks Greg

These are non-expert opinions..
Dave