Official Sasquatch Re Build Thread, Part 2 New Rotary then, new trans, all german turbo Options

[Mike Bellis]

I started a new thread for the re build of the Turbo wankel project.

Here is a link to the begining.

http://www.914world.com/bbs2/index.php?showtopic=113156

With a little help from my Brother and Son, we got the car into the garage and I tore the engine out. It took a little over an hour to pull.



The turbo looks ok. It's a little dirty but I can't see any knicks in any blades. Shaft play is minimal and it spins wirh air without drag or noise. I will have to take it apart to find any further signs of damage.



As expected, I blew the apex seal of rotor 2. The white specks in the picture is where the seal should be. There is very fine grit in the exhaust port. Rotor 1 looks fine. Time for a rebuild or JDM crap motor. I will have to look at my budget, A rebuild is 2-3 times the cost of a JDM motor. Either way, all the components will bolt on. There is a chance if I go JDM, that I will have to modify the engine brace for different motor mounts.



Here's some pics of the package...

[Mike Bellis]

Well the engine will be in this weekend but it wont be running. The primaty fuel rail will not work. Time for a custom fuel rail. I have the rail stock (3 feet), but drilling and tapping is a PITA on aluminum. I might send the tapping out to a maching shop. That will prevent me from having to build the rail multiple times. (IMG:style_emoticons/default/dry.gif) This fiasco will allow me to finally install my 1000cc primary injectors. right now I'm still running the stock 550cc primary with my 2000cc secondary injectors. This will require some fine EFI tuning but nothing too bad.

Here is the fuel map. The primary injectors function like a normal injector up to 1.7psi. At that point, they maintain a steady pulse width up to 30psi. At 1.7psi, the secondary injectors start to pulse and increase pulse width with pressure and rpm. This is normal for a rotary to use this injection staggering. I will reduce the pulse width below 1.7psi by 40-60% across the map to start tuning.



Here is the map in 3D...



The original engine I have is from a JDM car called a Enus Cosmo. This engine has a better plenumn and intake for torque than a standard Rx7. The new engine is from a USDM 89 Rx7. I have noticed that Mazda made these engines with 10 different versions of every part. maybe that is why they are so expensive. No consistency= $$$$ tooling costs.

Bottom line... It will fit with little mods. So far just a new fuel rail and rework the motor mount locations. I will be able to add braketry to the existing engine bar to accept these engine mounts with little effort. And the old mounts will remain for the other engine if needed. Compared to all the fab I've done, this seems minor.

I will drill and tap the plenumn to accept 2 meth injectors. Not sure if I'll have the meth working by WCR. Have to watch my car budget. But It will be set up for it and I'll add components as funds allow. If the meth is not functional, I will dial down the boost for a while. I will still have a 400% hp increase over stock... (IMG:style_emoticons/default/evilgrin.gif)