Tomei Powered PONCAM - Manual (Page 3)

4B11 NOTES
■ No.1 Cylinder Top Dead Center Compression Setup.
Rotate the crankshaft clockwise and mark the
camshaft sprocket and the cylinder head surface
so they all are in the horizontal position. Verify the
timing mark of the crankshaft and T Mark position
of the ignition timing indicator with the timing gear
case assembly.
* Mark the timing chain position with a paint pen to
be sure that the camshaft sprocket and timing chain
does not slip. When the paint mark returns, check
for any signs of slip which may need readjusting if it
happens.
■ The valve timing chain has to be loosened to remove and install the camshafts.
Insert the precision driver into the timing chain case service hole to unlock the
timing chain tensioner.
Use the special chain tensioner release bar tool (Mitsubishi genuine part
number MB992103) and insert it into the tension line of the timing chain to
release it after you have unlocked the timing chain tension from inside the
timing gear case assembly.
You use the Mitsubishi special tool (Genuine Parts Mitsubishi MB992103) to
press the intake side camshaft sprocket tension to push the tension guide out.
Then you remove the precision driver that was used to unlock the chain
tensioner.
■ TORQUE SPECS
Refer to the MITSUBISHI service manual when more information is
needed.
4B11 PONCAM TYPE-R recommendation valve timing.
The following description below is for the setup data for MIVEC that TOMEI engineers found as the best setting on
the engine Dyno tests.
You may still need to proceed with advance settings to obtain the best to suit your needs.
IN
Center Line @112°
EX
Center line @120°
* The bench test data was obtained based on wide throttle at each RPM range so you will need to further finely
tune to suit your cars location and setup.
ENGINE SPEED 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 7500
Lobe Center 25 25 25 25 25 20 15 8 6 5 0
Advanced Lobe Cente 87 87 87 87 87 92 97 104 106 107 112
Lobe Center 30 30 30 27 24 18 14 7 2 0 0
Retarded Lobe Cente 90 90 90 93 96 102 106 113 118 120 120
Paint Marking
Timing Tune
Mark Point Timing Tune
Mark Point
Camshaft Sprocket
Timing Mark
Cylinder
Head
Surface
Chain Tensioner
Intake side
Camshaft
Sprocket
Tension
Side Guide
Direction of Power
Press
Push
MB992103
The special tool is
required. Mitsubishi
genuine part no.
MB992103
● Camshaft Sproket Bolt [85±5N・m]
● Camshaft Bearing Cap ［12±1N・m］
Precision driver (-)
Service Wheel
Crankshaft
Pulley
Chain Tensioner Assembly
Use a ratchet to lift here.