It is surprisingly simple to put together, with the exception of a small glitch in timing the camshaft.
Watching Papadakis Racing build a 1,000-horsepower B58 engine for the 2020 Toyota Supra has been fascinating. reported on the engine teardown in August. It was eye-opening even for those who are not familiar with engine talk. This video outlined some of the unique features in the 3.0-liter Inline-Six. It also included the controversial electronic oil-metering sensor, which replaces the tried and true dipstick. This is something we discussed in an article. But for our purposes, let’s take a look at the B58’s reassembly.
Toyota underrated the Supra?
The video will show you all the details about the new parts. There are many of them. The majority of the modifications are in the rebuilt head. This was thoroughly inspected and improved porting as well as upgraded components for the valvetrain. This build uses a stock headgasket. That might surprise some gearheads considering the extra power this engine will produce. The engine was well-built to handle large power straight from the factory. This head gasket is part BMW’s magic. A custom set of head studs was used to torque the head to the block a little tighter.
The reassembly of another BMW component, the magic, required some extra effort. It seems that there are not enough timing marks on the crank pulley for proper timing of the camshafts. We should also remember that the B58’s timing gear is located at the rear of the engine. Therefore, some valvetrain components needed to be removed so that the engine could flip over. The cam timing must be set properly by installing the flexplate or oil pan.
Tuning the Supra
The rest of the engine was easy to put together with this set. The engine’s intake was custom-made and 3D printed in aluminum. It is also capped with a red Supra stock valve cover. The final pieces were the turbo setup and exhaust manifold.
Next, we will see if the effort paid off. The project is scheduled for dyno testing in near future. We’ll be covering that video as soon it’s posted.