All MWR 2GR-FE built short blocks include:
– Wiseco forged pistons
– New main and rod bearings
– Cut/polised crankshaft
– Expert machine work, inspection and assembly
1. Compression Ratio
Choose 9.0:1 compression for turbo, supercharged or extreme nitrous applications. 10.8:1 works great with low to medium boosted turbo and supercharged setups. Choose 12.0:1 for the ultimate in naturally aspirated performance.
2. Connecting rods
Select stock or upgraded connecting rods for naturally aspirated and lightly boosted engine combinations. For serious turbocharged, supercharged or nitrous applications we strongly recommend upgrading to Crower billet connecting rods for additional safety and strength.
3. Core charge
Like most engine builders we sell these engines, heads and blocks on an exchange basis. That means that we require you to send us a rebuildable “core” similar to the engine, head or block that we are sending to you. If we’re going to send the rebuilt unit to you first then we charge you a core charge, which is a deposit that we hold on to until your core is returned to us and is then refunded to you. For a full refund of your core charge the core must be returned within 30 days and must be rebuildable- this means no holes or cracks in the block, no significant damage to cylinder heads, and no missing bits such as cam caps. We don’t care about pistons or rods. Valves may be bent, crankshafts may be scuffed.
4. Bore size
Choose 94mm (stock) for a standard 3.5L build with standard bores. Choose 97mm for a Darton wet sleeved block- not only does this increase your displacement to 3.7L, it increases your engine’s torque and power output accordingly. It also incorperates Darton’s MID technology, making the block semi-closed deck for excellent bore stiffness and boost handling.