Tomei Powered EJ22KIT/FORGED CRANKSHAFT - Manual (Page 6)

2. DEBURRING CASTING ERRORS & RADIUS FINISH
Chamfer and radius the edges and galleries to remove all casting flashes/errors. You can also use #400 grit
sandpaper for certain areas like the bottom of the piston skirts and on sharp edges.
3. PISTON RING ADJUSTMENTS & PREPARATIONS
Please adjust, and measure the following when you use our piston kit.
① Insert the Piston Ring & position it in the middle of the
cylinder bore by using the head of the Piston, or a ring
squaring tool. Then check the ring gap clearances with
a thickness gauge.
② If the Ring Gap is too narrow and not within the required
clearance values, you'll have to file the edges of the
Piston Rings to enlarge the gap, until the gap is within
the required specifications.
CAUTION
Adjust the Ring Gap to meet the specified clearance. If the Ring Gap Clearance is not
within the specified ring gap clearance values, can cause possible damages & engine failure.
Top Ring 0.15～0.25
Second Ring 0.35～0.45
Oil Ring 0.15～0.70
Clearance (mm)
Clearances R 0.3
Approx
50mm
Thickness Gauge
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4. ASSEMBLY OF PARTS
Follow the assembly instructions as specified on the Fuji Heavy Industries workshop service manual.
When using the Tomei Conrods, refer to the instructions on the Tomei "H-Beam connecting rod manual".
(1) FRONT MARK CONFIRMATION
Assemble the Pistons with the mark on the Piston
facing the front of the engine.
CAUTION
If the pistons are installed facing the wrong way, the
performance will not be the same and you'll risk possible
damage to the pistons and the engine.
(2) PISTON RING CONFIRMATION
Note the positioning of the Piston Rings when installing the Tomei Piston Kit.
① Ring view from above ② Piston View
Position the clock mark side of the ring up.
[TOMEI PISTONS]
FRONT MARK
Top Ring
Second Ring
Ring Mark
Oil Ring
below the side rail
Top Ring and
Oil Ring Expander
FRONT
Second Ring
Oil Ring above the
side rail
Second Ring
Oil Ring above the
side rail
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