Building the FR-S FA20 with Stay Crushing: Installing the Engine and Making Big Power!

,

Subaru boxer engines tend to have a lot of blowby and can spew out a lot in just one track session. This oil ends up in the intake, causing detonation and fouled out intercoolers. An oil coated intercooler is way less effective.

In extreme cases, the intercooler can retain a lot of oil over a long period of time, which can suddenly be sucked into the engine causing it to hydro lock- breaking expensive stuff! Forced induction motors make the issue even worse as they have increased blowby by nature.

We fixed this by adding Radium Engineerings catch can system to both the crank vent and the PCV system. The Radium system if fully sealed, so it retains smog legality. The Radium system removes all oil from the blowby and PCV system, and it returns clean and filtered air to the intake tract.

 

For a fuel pump to keep up with the flow demanded by our anticipate use of E85, we selected a Deatschwerks DW300c pump. For E85 use the pump needs at least 50% more flow.

The 300c is flow rated at 340 liters per hour and can be ordered with a vehicle specific installation kit. The DW300c pump is designed to withstand the rigors of alcohol fuel. Ethanol is a strong solvent with no inherent lubricity and kills conventional pumps quickly.

The DW300c uses a fuel resistant composite impeller which will not soften or swell in ethanol. The entire armature assembly is fully encapsulated to prevent corrosion of the copper windings. The brushes and commutator of the pump motor are both made of carbon to work for a long time in abrasive lube-less conditions.

These design features and Deatschwerks extensive R&D endurance bench test means that your pump can be reliable even with E85. We know a few of these pumps that have been daily driven for several years with nothing but E85 with no issues.

The DW300c is also backed by a 3-year comprehensive warranty. A lot of us have been frustrated by the life of fuel pumps when running E85, and Deatschwerks pumps should be a good solution to alcohol related pump failure.

 

Here, Howard has removed the stock fuel pump housing from the car’s gas tank. The access hatch is located on top of the gas tank inside the car.

The DW300c is a direct drop in with the supplied kit.

The new DW300c is a little shorter, but the pump comes with a spacer and fuel inlet sock to make up for the size difference.

While we were installing the motor the stock radiator had to come out. Here it is compared to the Jackson Racing part.

Notice that the Jackson Racing radiator’s core is 3x thicker than stock.

 

Leave a Reply

Your email address will not be published. Required fields are marked *

*
*