MWR Built Short Block – Toyota 1ZZ-FE


Compression Ratio *

Connecting Rods *

Core Charge *

Crankshaft *

SKU: MWR-21X0XX Categories: , , Brand:


Approximate build time: 3-4 weeks from order date

All MWR 1ZZ-FE built short blocks include:

– ARP main studs
– Wiseco forged pistons
– MWR main and rod bearings
– Expert machine work, inspection and assembly

Note that REAR MAIN SEAL is not included or installed, as many people have that on hand as part of complete engine gasket set.

Options include:

1. Compression ratio
10.0:1 Cast pistons are an excellent choice for a standard replacement street engine. Pistons are 2003+ style wiht improved oiling. For performance, choose Wiseco 8.8:1 compression for turbo, supercharged or extreme nitrous applications. Wiseco 10:1 works well for lightly boosted applications. Choose Wiseco 12.0:1 for naturally aspirated performance with the ability to run a small shot of nitrous.

2. Connecting rods
Select stock connecting rods for naturally aspirated engine combinations. For turbocharged, supercharged or nitrous applications we recommend upgrading to MWR or 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. 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 90 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. Crankshaft
If you choose the Lightened and Knife Edged option the crankshaft is precisely machined to remove approximately 10% of its weight, then the counterweights are contoured and the crankshaft is rebalanced. Advantages include quicker throttle response, horsepower increase thanks to less drag through crank case oil, and corresponding reduction in oil foaming. Great for high rpm and racing applications.

Additional information

Weight 120 lbs
Dimensions 20 × 20 × 20 in