GS 300 RWD V6-3.0L (3GR-FSE) (2006)
Piston Ring: Specifications
PISTON RING END GAP
Insert the piston ring into the cylinder bore.
Using a piston, push the piston ring a little beyond the bottom of the ring travel, 110 mm (4.33 inch) from the top of the cylinder block.
Using a feeler gauge, measure the end gap.
Standard End Gap
Maximum End Gap
If the end gap is greater than the maximum, replace the piston ring. If the end gap is greater than the maximum even with a new piston ring, rebore
all the 4 cylinders or replace the cylinder block.