BMW Powered Toyota 86 – Roll Cage, Pedal Box & Fuel Cell
The Fuel Safe fuel cell in its enclosure is installed in place.
The major fabrication of for the back of the car is now done.  It is pretty awesome looking!
The seat mounts are fabricated and welded together next. Following best practices, the seat mounts are welded to the cage.

The best way to build seat mounts is to weld the seat mounting frame to the cage instead of the floor.  If a severe crash distorts the car, the seat will move with the cage making it less likely that the harnesses will come loose or too tight crushing the driver. The seat also has a better chance of moving with the chassis as it bends making it less likely that the driver will get smashed.  Blunt force trauma is a bitch.

Now it’s time to get rid of the stock FA20 engine!

Now that a lot of the tube fabrication has been completed, stay tuned, in the next segment of Time Attack Toyota 86 we will start working on the many other parts of the chassis.  There are some fantastic things coming with this build that we can’t wait to see!

obp Motorsport
Fuel Safe


  1. I’m curious as to what type of racing class this will be entered into. I’m not too knowledgeable about all of the classes and series, specifically the ones that would allow an engine swap of this nature. That being said, I’m excited to see how this turns out. We all know the stock engine (even boosted) isn’t the best for power, but the chassis is very well balanced and highly tunable.

    1. Jeffrey, They are entering in multiple Hill Climb events & Global Time Attack “unlimited” class. The chosen motor is about the same weight as the stock one, but with more potential & reliability at a much higher HP level.

      1. M50 is probably a hundred pounds over the FA20, trans probably a bit more too, and it’s definitely longer and taller but power does talk. I’d suspect most of it is really about having an M50 developed rather than it being the best decision if there were a blank slate.

        A lot of nice fab work on this car; always fun to see stuff like that.

        1. The FA20 motor and trans weights 480 according to the internet. M50 with trans is about 400 . THe inline bmw motors are pretty light

          1. I’m seeing 430 pounds for an M50 longblock. Vorshlag has weighed both the FA20 and the M20, both with trans at 20 pounds more for the M20, and I’m seeing references to the M20 being about 20 pounds lighter than the M50.

            Like I said, not a huge difference but it’s definitely not in favor of the iron block I6.

  2. Try using dry ice when removing the sound deadening. It breaks off in chunks instead of having to scrape goo off the floors.

  3. I think you skipped over a key detail that is evident in some of the pictures. The roof skin was removed so that the top parts of the roll-cage could be fully welded. Apologies if i missed that detail somewhere but i have seen a few different cage builders do it different (like cutting holes in the floor to drop the a pillar bars and tip the cage forward to access the top) and i think that pulling the roof-skin is the most efficient way of doing it.

  4. Is there a reason why the a pillar bar has such a huge gap? Ive been in cars like that and the bind spot it creates is horrible. It seems like there are also alot of dead tubes that could have easily been placed on the same plane or triangulated to others. Is the rule book that strict to where you couldn’t fix that? Or is there a reason for it that im missing

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