MAZDA B61P02300 Nose Crank Dohc Engine Motor NA6 1.6L B6-ZE 222K 6036

( Manufacturer Part Number: B61P02300 ), ( Part Type: Crank Engine Motor ), ( Materials Sourced From: Japan ), ( Fuel Type: Gasoline ), ( Manufacturer Warranty: 60 Days ), ( Engine Size: 1.6l ), ( Block Type: Straight ), ( Id: Jm 2506036 ), ( Importapart: 314-502-3104 ), ( Weight/location: 252 Lbs / B0 )

Review MAZDA Na6 1.6l Long Nose Crank Dohc Engine Motor 222k fits MIATA MX5 1990–1993

The Mazda B61P02300 engine is a DOHC (Double Overhead Camshaft) 1.6-liter powerplant that was specifically designed for the 1990-1993 Miata MX-5 NA6 series cars. This engine is commonly referred to as the B6-ZE unit. With a displacement of 1596 cc, this engine is known for its exceptional balance between power and fuel efficiency.

The B61P02300 engine is a 4-cylinder, inline design, which means that the pistons move up and down in a straight line, creating a smoother and more effective power delivery. The DOHC design allows for more efficient valve timing and a more complete combustion process, resulting in increased power and torque.

This engine produces approximately 116 horsepower at 6800 rpm and 100 lb-ft of torque at 5500 rpm. The compression ratio for this engine is 10.0:1, which is a relatively high ratio for a production engine, allowing for a more efficient combustion process.

The B61P02300 engine features a cast iron block and aluminum cylinder head, which provides excellent durability and weight savings. The intake and exhaust valves are made of steel and are operated by roller rocker arms and camshafts. The engine also features a distributor-less ignition system, which uses a coil pack and crankshaft position sensor to fire the spark plugs.

This engine has a sump capacity of 3.2 quarts and a cooling capacity of 1.3 gallons. It also features a balance shaft system, which reduces vibrations and provides a smoother driving experience.

The crankshaft on this engine is a forged steel unit, which provides strength and durability, even under high-load conditions. The connecting rods are also made of forged steel, ensuring a strong connection between the pistons and the crankshaft.

The B61P02300 engine has a service interval of approximately 10,000 miles for the oil change and filter replacement. The engine also features a timing belt, which should be replaced every 60,000 miles or every 5 years, whichever comes first.

In summary, the Mazda B61P02300 engine is a high-performing, fuel-efficient, and durable powerplant that was specifically designed for the 1990-1993 Miata MX-5 NA6 series cars. With its DOHC design, inline cylinder configuration, and high compression ratio, this engine provides a smooth and powerful driving experience. Its cast iron block and aluminum cylinder head, forged steel crankshaft and connecting rods, and balance shaft system all contribute to its exceptional durability and longevity.

Pros and Cons of Buying a Mazda B61P02300 1.6L DOHC Engine for a 1990-1993 Miata (MX-5 NA6)

a. Power: The B61P02300 engine offers improved power compared to the standard 1.6L engine, making your Miata more spirited and fun to drive.

b. Reliability: Known for its robustness and durability, Mazda engines have a reputation for long-term reliability, especially with proper maintenance.

c. Availability: These engines are widely available on the aftermarket, ensuring ease of sourcing and installation.

d. Cost-effective: Compared to other engine upgrades, the B61P02300 engine is a relatively affordable option for increasing power in your Miata.

a. Complexity: The installation process can be complex, especially if you're not an experienced mechanic. You may need professional assistance to ensure proper installation.

b. Compatibility: Ensure that the engine is compatible with your specific Miata model and that all necessary modifications and adaptations are made.

c. Performance trade-offs: While the B61P02300 engine offers improved power, it may not provide the same level of fuel efficiency as the standard 1.6L engine.

d. Potential for increased emissions: Depending on the specific modifications made to the engine, there could be an increase in harmful emissions. Ensure that any modifications comply with local regulations.

The decision to buy and install a Mazda B61P02300 engine into a 1990-1993 Miata (MX-5 NA6) comes down to personal preferences and priorities. If you're seeking improved power and performance, this engine is a solid choice. However, consider the potential complexities and costs associated with the installation process, as well as the potential trade-offs in fuel efficiency and emissions. Ultimately, if you're confident in your mechanical abilities and willing to accept the potential challenges, the B61P02300 engine could be an exciting and rewarding upgrade for your Miata.

If you're considering purchasing a Mazda B61P02300 engine for your 1990-1993 Miata (MX-5 NA6), ensure that you thoroughly research the process, gather all necessary information, and weigh the pros and cons carefully. Consider seeking professional advice or assistance during the installation process to minimize potential complications. Additionally, ensure that any modifications you make to the engine are safe, legal, and compliant with local regulations.

Details:

This engine is complete intake to oil pan and also includes the exhaust manifold. This engine does NOT include the cam angle sensor or any of belt driven accessories. There are no damages to this engine. This has been drained of all fluids and WILL need refilled with the proper lubricants before use.

Below is a linked video of the engine running before it was removed from vehicle. No shipping outside the contiguous 48 states. Long nose crank engine assembly from a 1991 Mazda Miata with 222,475 miles. 1991 Mazda Miata 222k #M0227783 Start u0026 Run Video.

Fits 1990 1993 Mazda Miata as a direct replacement. This engine was thoroughly tested before removal and ran great with good oil pressure no abnormal noises, smoking, misfires or any other problems.

part #: b61p02300 prices

• $1300.00-$2695.00

specifications grokengines:

• for models: Mx5, Miata
• for makes: Mazda
• for years: 1990-1993
• mpn: B61p02300
• part type: Crank Engine Motor
• materials sourced from: Japan
• fuel type: Gasoline
• manufacturer warranty: 60 Days
• engine size: 1.6l
• block type: Straight
• id: Jm 2506036
• importapart: 314-502-3104
• weight/location: 252 Lbs / B0

shipping grokengines:

• class: Freight
• cost: $325.00
• service: Flat Rate Freight
• type: Fixed

payments grokengines:

• credit card: Visa
• wallet: Google-pay
• other

offer grokengines:

• quantity: 1
• started: October 15, 2025
• best offers: True
• availability: In Stock
• options: Ship-to-home
• sold: 0

general grokengines:

• Car Truck Parts Accessories > Engines Engine Parts > Engines
• condition: Used

returns grokengines:

• paid by: Buyer
• policy: Returns Accepted
• time: 60 Days

seller grokengines:

• rating: 99.9%
• # reviews: 38989
• city: Hazelwood, Missouri

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