Tomei Powered H-BEAM CONNECTING RODS - Manual (Page 10)

3. CONROD BEARINGS OIL CLEARANCE INSPECTION & ADJUSTMENTS
Check the Conrods bearing inner diameter radius, and chose the bearing to suit the appropriate oil clearance
required.
<REFERENCE VALUES>
OIL CLEARANCE
0.040～0.060
(mm) 0.040～0.060
0.040～0.060
0.040～0.060
0.035～0.055
0.035～0.055
0.035～0.055
0.030～0.050
4. BUSH CLEARANCE INSPECTION.
① Measure the small ends inner diameter to verify that the bush clearance is within the allowed tolerance.
<REFERENCE VALUES>
BUSH CLEARANCE
(mm)
② Apply oil on the inside of the conrod small end and on the piston pin, insert the pin when cold and verify
that it can move smoothly.
EJ20/25/26
4G63
VQ35
SR
RB
Oil Clearance = Bearing Inner Diameter - Crank Pin Diameter
0.010～0.015
(Max 0.025)
4AG
Bush Clearance = Small End Inner Diameter - Piston Pin Diameter
2J
1J
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5. PISTON INSTALLATION
〔For EJ〕 Assemble the Conrods with the ( ) logo marking all facing the same
direction, towards the front of the engine (the crank pulley side).
〔All Other Models〕 Keep the connecting rods marked ( ) all the logos facing the same
direction (front or rear) ,then heat the rods small end to 60-70deg Celcius, then install
the pistons.
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