Completely hypothetical rotary question

John Brown wrote: Brackets, bracing and structure my hypothetical Luddite mind comprehends quite easily, tuning tubing for velocity and proper pulse for scavenging and mass velocity as it drives an impeller becomes as mysterious

Have you SEEN a stock turbo manifold? They tend to be a box with engine ports on one side and a turbo flange on the other.

dean1484 wrote: Also a renisis is a 13b in terms of volume yes?

I thought a Renesis was officially a "13B-MSP" ?

The Renesis is a 13B, but it's got a bunch of limitations when it comes to turboing or supercharging it that the earlier 13Bs didn't have:

• It's the highest compression stock 13B out there, which very much limits the amount of boost you can feed into one before it goes from "hand grenade with the pin pulled" as someone one here put it so nicely to nuclear meltdown mode. IIRC most of the kits that were available (Pettit made a supercharger kit, GReddy a turbo kit) are very low boost.
• The exhaust ports are a major restriction that isn't easily ported away unless you go back to a peripheral port.
• IIRC there are a couple of new cheapy email turbo manifolds available for the Renesis and their reputation appears to be so great that I'd expect them to blow up before the engine does. There aren't many other manifolds available as turbo'ing the Renesis never really caught on although you may still be able to get the GReddy one or even a used GReddy kit. Normal RX7 turbo manifolds don't fit due to the change from peripheral to side exhaust ports.
• If you're trying to use the whole shebang inside an RX8 you'll also have the fun of dealing with the ECU. There aren't many options available (MazdaEdit or if you're lucky a used COBB Access Port, but you'll still have to figure out how to deal with the boost side of things) or you have to go piggyback which I'm personally not a big fan of. Not sure if there are any full standalones that can deal with the RX8 can bus that don't cost you multiple challenge cars. ECU is very important as you have to be able to deal with any sort of knock quickly - rotaries usually deal with detonation by having the owner rebuild the engine afterwards...

I'll play the bad idea game. The renesis exhaust manifold is already most of a turbo log style manifold, the outlet is just at the wrong end. If you relocate the battery and remove the airbox there is a ton of space in front of the engine for a turbo. I propose you (your friend) hacks/welds some weld-el from the stock exhaust manifold to an ebay turbo. Lots of water/meth on low boost should keep things from melting immediately. Megasquirt in parallel with the stock ECU to keep functionality with stand alone control of the fuel/inition/boost for a lot less than Cobb stuff.

Your hypothetical friend sound good looking. And tall. And handsome, as well as good looking.