Toyota 1ZZ-FE Crankshaft Kit with Bearings – MR2 Celica Avensis

Toyota 1ZZ-FE Crankshaft Kit with Bearings

Rebuilding a Toyota 1.8 VVT-i engine with a damaged or cracked crankshaft? This Toyota 1ZZ-FE crankshaft kit includes a brand new standard-size crankshaft with main bearings, conrod bearings and thrust bearings. It is an aftermarket replacement for OE reference 13401-22020.

The crankshaft is new and not a reground original. A connecting rod set is also available as an optional extra when ordering.

What Is Included?

• 1 x new 1ZZ-FE crankshaft with standard-size journals.
• 1 x set of STD conrod bearings made in Japan.
• 1 x set of STD main bearings made in Japan.
• 1 x set of STD thrust bearings.

Optional connecting rods: select the conrod set option if required. Connecting rods are not included in the base kit.

Crankshaft Specifications

• Engine: Toyota 1ZZ-FE 1.8 petrol.
• OE reference: 13401-22020.
• Stroke: 91.5 mm.
• Main journal diameter: 48 mm nominal.
• Conrod journal diameter: 44 mm nominal.
• Size: STD.

Toyota 1ZZ-FE Applications

Applications covered by this listing include the following 1ZZ-FE models:

Check the engine code and OE reference before ordering. Model names and registration years alone are not enough to confirm fitment. This listing is for the 1ZZ-FE engine. It is not a direct replacement crankshaft for the 2ZZ-GE used in Celica T Sport and other VVTL-i models.

Cracks, Hairline Cracks and Worn Crankshaft Journals

Cracks and hairline cracks are an important check when rebuilding a used 1ZZ-FE engine. A crankshaft can look serviceable but still have fine cracks that are difficult to see with the naked eye. An engine machine shop can carry out suitable crack testing such as magnetic particle inspection or dye penetrant testing.

A confirmed crack is a reason to replace the crankshaft. Polishing or regrinding the journals does not make a cracked crankshaft safe to reuse. A used replacement also needs inspection before fitting. Choosing a new crankshaft avoids relying on the wear and repair history of a second-hand part.

Replacement may also be needed after bearing failure has damaged the journals or when inspection shows the original crankshaft is unsuitable for reconditioning. Have the crankshaft and the rest of the bottom end assessed together before deciding which parts to reuse.

Useful Checks Before Replacing a 1ZZ-FE Crankshaft

1. Find Out Why the Original Bearings Failed

Toyota and MR2 owners have documented bearing knock after their engines ran very low on oil. If your engine was using oil before the knock started, include the piston oil-control rings and oil drain holes in the rebuild inspection. Carbon deposits can prevent these parts from doing their job.

A new crankshaft will not cure an existing oil-burning problem. Checking the pistons, rings and cylinder bores while the engine is apart helps address the cause as well as the damaged parts.

2. STD Bearings Still Need Clearance Checks

STD means standard size. It does not mean that bearing clearances can be assumed. Toyota uses selective bearing grades within the standard-size range. The original bearing marks relate to the original components and should not be used on their own to select bearings for a replacement aftermarket crankshaft.

Measure the new journals and check the assembled main and conrod bearing oil clearances before final assembly. Check crankshaft end float too. Follow the Toyota workshop procedure and the bearing manufacturer's guidance.

3. Check the Conrods After a Spun Bearing

A spun bearing calls for more than a fresh set of shells. Have the conrod big-end housing checked for size and roundness before reusing it. A housing outside specification can prevent the new bearing from fitting correctly. This check helps establish whether the optional connecting rod set is needed for your rebuild.

4. Remove Debris Before Fitting New Parts

Failed bearings can leave metal particles in the engine. Clean and inspect the oil passages and other affected components before assembly. Include the sump, pickup and oil pump in the inspection. An oil change alone is not a substitute for removing debris that could damage the new bearings.

5. Pay Attention to Timing Cover Sealing

The 1ZZ timing cover also forms part of the water pump area. MR2 rebuild discussions highlight the importance of sealing this area correctly because an internal coolant leak can contaminate the engine oil. Use the specified sealant and follow the workshop manual's bead pattern and assembly instructions.

1ZZ-FE Rebuild References

The diagrams below show the original component layout and Toyota's factory main-bearing selection reference. The factory grade chart does not replace clearance measurements when fitting this aftermarket crankshaft.

For further reading, the MR2 Roadster Owners Club has a 1ZZ strip and rebuild discussion and a 1ZZ teardown following heavy oil consumption and bearing knock. These are owner experiences. Use the correct Toyota workshop manual for measurements and assembly procedures.

Need help confirming fitment? Contact ZedPerformance with your vehicle details, engine code and original crankshaft reference before ordering.