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AMS Subaru EJ25 Short and Long Blocks

February 10th, 2010 3 comments

Whether you are looking to upgrade your existing Subaru drivetrain or replace your old engine that’s had it, AMS offers a number of Subaru EJ25 Short and Long Block Stages to support any current or future demands you may have for your Subaru vehicle.

All AMS Subaru short and long block assemblies use only the highest quality components to ensure maximum strength, power and reliability. Each block is checked for correct dimensions, cylinder bore, mains and block flatness – then hand assembled at AMS using the same exacting care as in our championship winning race engines.

AMS SUBARU STI EJ25 SHORT BLOCKS

STAGE 1 (info)

* JE Pistons
* Stock forged STi rods
* Brand new short block
* High performance rod & main bearings
* Precision AMS spec machine work on block & crank
* Precise, documented hand assembly

STAGE 2 (info)

* JE Pistons
* Manley H-beam Rods
* Brand new short block
* High performance rod & main bearings
* Precision AMS spec machine work on block & crank
* Precise, documented hand assembly

STAGE 3 (info)

* JE Pistons
* Manley I-beam Rods
* Billet crank
* Brand new sleeved short block
* High performance rod & main bearings
* Precision AMS spec machine work on block & crank
* Precise, documented hand assembly

Available Options

AMS can customize your stage 1 through 3 short block package with a number of options including JE Billet Pistons, full gasket sets, an 08 STI High Volume Oil Pump, Subaru water pump and gasket set, timing belt and tensioner, ARP head studs, and rod upgrades. Click on each stage above for available options.

AMS SUBARU STI EJ25 LONG BLOCKS

STAGE 1 (info)

* JE Pistons
* Manley H Beam Rods
* Brand new short block
* Cosworth Heads
* GSC Cams
* New OEM head gaskets
* High performance rod & main bearings
* ARP Head Studs
* Precision AMS spec machine work on block & crank
* Precise, documented hand assembly

STAGE 2 (info)

* JE Pistons
* Manley H Beam Rods
* Billet crank
* Cosworth Heads
* GSC Cams
* New OEM head gaskets
* High performance rod & main bearings
* ARP head studs
* Precision AMS spec machine work on block & crank
* Precise, documented hand assembly

STAGE 3 (info)

* JE Pistons
* Manley I Beam Rods
* Billet crank
* Sleeved block
* Cosworth Heads
* GSC Cams
* New OEM head gaskets
* High performance rod & main bearings
* ARP head studs
* Precision AMS spec machine work on block & crank
* Precise, documented hand assembly

Available Options

AMS can customize your stage 1 through 3 short block package with a number of options including JE Billet Pistons, full gasket sets, an 08 STI High Volume Oil Pump, Subaru water pump and gasket set, timing belt and tensioner, ARP head studs, and rod upgrades. Click on each stage above for available options.

The AMS Subaru STI Stage 1 long block is the ultimate solution for high horse power reliability. We use only the best off the shelf and custom designed AMS spec components. Combine that with the latest in machine and assembly practices and you are assured only the best!

All our engines are hand assembled at AMS using the same care as the engine in our 1142 awhp, world record holding AMS Drag EVO. Every motor is balanced, blueprinted and assembled to AMS’ exacting standards.

Before assembly each block is checked for correct dimensions, cylinder bore, mains, block flatness, etc… to ensure you get the best foundation for your new engine. Every engine we assemble has a build sheet where tolerances, torque specs, and clearances are documented.

JE Pistons announces Billet Subaru Pistons

August 31st, 2009 No comments

JE Pistons has announced the release of the first billet pistons available for Subaru EJ257 engines!

Originally created for the Crawford Performance Unlimited AWD Time Attack Subaru and Ken Block’s Gymkhana racecar, these pistons are now available to the public. The new pistons are 100% CNC machined from high quality 2618-T6 wrought aluminum bar stock and are specifically designed for high horsepower road and drag race engines. The pistons feature internal and external bracing, a unique donut dish crown and an application-specific under crown profile that properly redistributes heat and reduces stress concentrations experienced in high boost Subaru engines. Unlike forged pistons, the billet pistons are machined on every surface allowing for all unnecessary weight to be removed during manufacturing. The result of this new process is a weight reduction of up to 35 grams compared to other piston packages available! High quality 9310 steel wrist pins and JE Pro Seal Rings are included. For severe racing applications, upgraded Diamond Like Carbon (DLC) coated wrist pins are available.

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