Engine Mounts - How to Wrap Your Arms Around a Renesis Rotary!

I hope I've done my math correctly!  The Renesis rotary engine I am installing in BB is a masterwork.  It carries a nameplate with 232hp and 216Nm of torque.  These are basically triple of the powertrain BB was born with.  So I was a bit worried about making strong enough engine mounts.  However, some basic statics suggests that 216Nm at a working radius of 0.4m is only 1080N for each engine mount.  That's only 243lbs.  Even a 3x impact load would be well under a thousand.  Roughly a one inch weld bead would easily hold that.  It seems too low but I also used much more than one inch of weld bead!

I don't remember how I managed to cut this out on my 4" depth band saw but I managed it.

I am using the original (OK, close copy replacements of the original) MG engine mounts.  I made cardboard templates and trimmed them until they fit undercar with the engine hanging in place from the hoist chain.

I am proud of the transmission mount.  The rubber tube was difficult to machine but I fixtured my X-acto knife in a tool holder on my lathe and was able to make very precise cuts.  The bushings slip right in to place.

I'm not proud of the paint job but it will prevent rust, BB is never (OK only when I push the forecast) driven in the rain, and she's not a show car.  She's a more or less bespoke race car that one can drive to work if one thinks about it like being on a motorcycle!

My biggest puzzle was the passenger side mount. The passenger side of the engine includes the intake manifold, the exhaust manifold, and the MG frame rail.  In spite of the relatively low force I calculated, I was only able to fit a cantilevered beam for this mount.  I did not feel safe with that so I made this:

According to my careful measurements, that fit above the exhaust manifold and below the frame.  Most likely it does, but there is no way of inserting and connecting the bolts.  So I made this:

I extended two of the oil pan bolts with sleeves and bent a piece of 0.1" sheet metal up to connect to the main engine mount.  There's almost 3 inches of offset there so no longer a cantilever.  We'll see how that holds up but I guess no Renesis was ever so poorly supported!

Word on the street is that this engine has no low end torque.  Well, I plan to spend little time at the low end!  Happy driving and keep having #funwithcars !