2.3L Destroke EJ25
-EJ257 connecting rod
-EJ205 crankshaft; 75mm stroke
-Wiseco OTS 8.9:1CR piston for EJ257
-Compression height for EJ257
NOTE: You can see the piston doesn't come all the way to the top of the deck. This is due to the smaller 75mm stroke. It falls 2mm shorter up top and 2mm bottom. This adds up to the 4mm difference in the OEM stroke of 79mm vs the new stroke of 75mm. Pistons would need to be made with an additional 2mm added to the compression height to make up the difference. You can also use connecting rods that are +2mm longer than factory to make up the difference. Take note that even if you're using a longer rod, the compression ratio will be LESS than advertised for that piston you're using. This would be the same for a piston that retains the same dish cc but only compression height changed. Reason being is because the stroke is less.






2.35 Stroked 2.2L (applies for 2.0L as well)
-EJ257 connecting rod
-EJ257 crankshaft; 79mm stroke
-Custom CP Piston 9.0:1CR piston for EJ22T with EJ205 compression height
-Compression height for EJ205
NOTE: You can see the piston comes all the way out the top of the deck. This is due to the larger 79mm stroke. It extends 2mm taller up top and 2mm bottom. This results in the 4mm difference in the OEM stroke of 75mm vs the new stroke of 79mm. Pistons would need to be made with -2mm taken away from the original compression height to make up the difference. You can use connecting rods that are -2mm shorter than factory to make up the difference, but that would change your rod ratio. Take note that even if you're using a shorter rod, the compression ratio will be MORE than advertised for that piston you're using. This would be the same for a piston that retains the same dish cc but only compression height changed. Reason being is because the stroke is more.





However take note that if you have a longer skirt, you might want to make sure it clears the lower case main suppports. These skirts are wide thus cam in contact with the lower case of the block. If they where short skirts they would not come in contact. If the skirts where as WIDE and just the center part of the skirt was extended, it would clear the lower case main supports. This picture shows a combination of EJ257 crank, EJ257 connecting rod, and custom CP piston with longer and wide skirts with EJ205 compression height.



CP piston skirt compared to the EJ22T OEM piston skirt