Mazworx Racing Engines

Our Stage 1 Short Block is ideal for your WRX, STi or later model Legacy GT. Your new short block is built from a brand new case from Subaru to ensure the highest of quality. We rate our Stage 1 Short Block up to about 500hp. Each block is cleaned, inspected, machined and built, IN-HOUSE. If you're suffering from a lost ringland or bearing failure, this is an excellent solution for you. The Mazworx Stage 1 EJ257 is built with the following components:-NEW OEM EJ257 Block-NEW OEM...

This package offers a complete performance engine build from Mazworx, using the SR20 platform.  Final displacement is 2.3L and this package is rated for over 900hp and the constant abuse on drift engines.We start the build reinforcing the block with the installation of Darton sleeves. Then we complete block preparation, constantly taking measurements to ensure the correct machining process is used.As for the cylinder head, we start with a Mazworx Stage 3 CNC Porting, installation of new...

This package offers a complete performance engine build from Mazworx, using the SR20DET platform, but still at an affordable entry level. Final displacement is 2.2L and this package is rated up to 600hp.We start the build reinforcing the block with the installation of Darton sleeves. Then we complete block preparation, constantly taking measurements to ensure the correct machining process is used.As for the cylinder head, we start with a Stage I Port and Polish, installation of new guides,...

Here at Mazworx, we can build your cylinder head to your specifications. Utilizing our CNC capabilities and state-of-the-art equipment, you can ensure that the machining process is done properly. If you want a cylinder head that is ready-to-bolt-on, see the specifications section for info. For more understanding of our process, see the additional information section.When sending your head in, we will need the complete cylinder head with cams caps, shims and rockers. Each built head will start...

Here at Mazworx, we can prep your block to your specifications. Utilizing our CNC capabilities and state-of-the-art equipment, you can ensure that the machining process is done properly.  This is a ready-to-assemble sleeved block that has all the necessary machine work done and all the clearances checked. Each sleeved block will start with the following: - Hot tank cleaning- Sand Blasted Block- Darton MID Sleeves Installed- Bore & Hone w/ Torque Plate- Step Decked- Line Bore ...

Increase the oil flow through your main bearings.Improve lubrication system on RWD SR's

This is just the labor to machine your block and install a single sleeve.  Quantity should reflect how many cylinders your engine is.  Secondary work is extra.Select which sleeved type will be installed.