Originally Posted by AMS

Coincidentally we're just wrapping this up. It's a big project and we finally got everything squared away. Testing was done and the horsepower gains and powerband are spectacular. This is a premium engine package and the price reflects many custom parts. The custom billet rods use expensive ARP 625+ custom age bolts that are much stronger than anything else available. The piston have been designed for strength and light weight, reducing stress on the wrist pin and rods. All these things add to to reduced fatigue and increased RPM range. My ideas was to create an engine that has the RPM range of a 2.0L while giving more torque and breather better at high RPM's. The Rod ratio, rod length, and bore to stroke ratio are optimized to support high volumetric efficiency. RPM range is extended by 500-600 rpm over a 2.3L stroker, making street/strip use good to 8900 RPM and road racing up to 8400 RPM.

For comparison, our 2.3L stroker made 550whp at 25psi of boost on a GT35R. After installing a 2.3RR 10:1 and changing nothing else we made 550whp at only 21psi!! There are a few choices as far as compression ratio goes and I'll discuss that here.

We're stocking two different compression ratio's and also can offer custom ratio's depending on applications.

9.25:1 Good for most street and race applications. Can be tuned to make great power on pump gas & race gas.

10.0:1 Great power and response on race gas for track or strip. Can be run on pump gas with caution and only on 93 octane (not 91).

AMS 2.3RR

Displacement: 2.27 L
Custom Billet Crank
Custom Billet rods with ARP 625+ Custom Age rod bolts
AMS Prepped 2.3RR block
O-ring deck
AMS spec Ross pistons
ARP Main & head studs
Custom Headgasket (will only work on this engine)
New Mitsubishi oil pump
New Mitsubishi water pump
AMS race balance shaft
Short block complete assembled & rotating assembly balanced

$7995.00