width MITSUBISHI LANCER EVOLUTION VI 1999 Workshop Manual

ENGINE – Specifications11-3
SPECIFICATIONS
SERVICE SPECIFICATIONS
ItemsStandard valueLimit
Timing belt
Auto-tensioner rod projection length mm12–
Auto-tensioner rod pushed-in amount [when pushed with a force of 98
– 196 N] mm1.0 or less–
Rocker arms and camshaft
Camshaft cam height mmIntake35.7935.29
Exhaust35.4934.99
Camshaft journal outer diameter mm26–
Cylinder head and valves
Cylinder head flatness of gasket surface mmLess than 0.050.2
Cylinder head grinding limit of gasket surface mm
Total resurfacing depth of both cylinder head and cylinder block–0.2
Cylinder head overall height mm131.9 – 132.1–
Cylinder head bolt shank length mm–Maximum 99.4
Valve thickness of valve head (margin) mmIntake1.00.5
Exhaust1.51.0
Overall valve length mmIntake109.5109.0
Exhaust109.7109.2
Valve thickness to valve guide clearance
mm
Intake0.02 – 0.050.10
mmExhaust0.05 – 0.090.15
Valve face angle45° – 45.5°–
Valve spring free length mm48.347.3
Valve spring load/installed height N/mm294/40.0–
Valve spring out-of-squareness1.5° or lessMaximum 4°
Valve seat contact width mm0.9 – 1.3–
Valve guide inner diameter mm6.6–
Valve guide projection from cylinder head upper surface mm20.5–
Valve stem projection mmIntake49.2049.70
Exhaust48.4048.90
Oversize rework dimensions of valve guide
hole mm
0.05 O.S.12.05 – 12.07–
hole mm0.25 O.S.12.25 – 11.27–
0.50 O.S.12.50 – 12.52–

ENGINE – Cylinder Head and Valves11-49
VA LV E S E AT
Assemble the valve, then measure the valve stem projection
between the end of the valve stem and the spring seating
surface. If the measurement exceeds the specified limit,
replace the valve seat.
ItemStandard value mmLimit mm
Intake49.2049.70
Exhaust48.4048.90
VALVE SEAT RECONDITIONING PROCEDURE
(1) Before correcting the valve seat, check for clearance
between the valve guide and valve and, if necessary,
replace the valve guide.
(2) Using the seat grinder, correct to obtain the specified
seat width and angle.
(3) After correcting the valve seat, lap the valve and valve
seat using lapping compound. Then, check the valve
stem projection (refer to VALVE SEAT in INSPECTION).
VALVE SEAT REPLACEMENT PROCEDURE
(1) Cut the valve seat to be replaced from the inside to thin
the wall thickness. Then, remove the valve seat.
(2) Rebore the valve seat hole in the cylinder head to a
selected oversize valve seat diameter.
Valve seat ring hole diameter
ItemStandard value mm
Intake0.30 O.S.35.30 – 35.33
0.60 O.S.35.60 – 35.63
Exhaust0.30 O.S.33.30 – 33.33
0.60 O.S.33.60 – 33.63
(3) Before fitting the valve seat, either heat the cylinder head
up to approximately 250°C or cool the valve seat in liquid
nitrogen, to prevent the cylinder head bore from galling.
(4) Using a valve seat cutter, correct the valve seat to the
specified width and angle.
See “VALVE SEAT RECONDITIONING PROCEDURE”.
DEN0212
Valve stem end
Valve stem
projection
Spring seating
surface
6EN0491
0.9 – 1.3 mm
43.5° – 44°
0.5 – 1 mm
0.5 – 1 mm
1EN0275
Height of
seat ring
Oversize I.D.

ENGINE – Piston and Connecting Rod11-61
INSTALLATION SERVICE POINTS
APISTON PIN INSTALLATION
(1) Measure the following dimensions of the piston, piston
pin and connecting rod.
A: Piston pin insertion hole length
B: Distance between piston bosses
C: Piston pin length
D: Connecting rod small end width
(2) Obtain dimension L (to be used later) from the above
measurements by using by following formula.
L =
(A – C) – (B – D)
2
(3) Insert the special tool, Push Rod, into the piston pin and
attach the guide A to the push rod end.
(4) Assemble the connecting rod in the piston with their front
marks facing the same direction.
(5) Apply engine oil to the entire periphery of the piston pin.
(6) Insert the piston pin, push rod and guide A assembly
having assembled in step (3) from the guide A side into
the piston pin hole on the front marked side.
(7) Screw the guide B into the guide A until the gap between
both guides amounts to the value L obtained in step
(2) plus 3 mm.
(8) Place the piston and connecting rod assembly onto the
piston setting base with the front marks directed upward.
(9) Press-fit the piston pin using a press.
If the press-fitting force required is less than the standard
value, replace the piston and piston pin set or/and the
connecting rod.
Standard value: 7,350 – 17,200 N
3 mm + L

ENGINE – Piston and Connecting Rod11-66
(3) Install the piston ring into the cylinder bore. Force it down
with a piston, its crown being in contact with the ring,
to correctly position it at right angles to the cylinder wall.
Then, measure the end gap with a feeler gauge. If the
ring gap is excessive, replace the piston ring.
Standard value:
No. 1 ring 0.25 – 0.35 mm
No. 2 ring 0.40 – 0.55 mm
Oil ring 0.10 – 0.40 mm
Limit:
No. 1, No. 2 ring 0.8 mm
Oil ring 1.0 mm
CRANKSHAFT PIN OIL CLEARANCE
(PLASTIC GAUGE METHOD)
(1) Remove oil from the crankshaft pin and connecting rod
bearing.
(2) Cut the Plastigage to the same length as the width of
the bearing and place it on the crankshaft pin in parallel
with its axis.
(3) Install the connecting rod cap carefully and tighten the
nuts to specified torque.
(4) Carefully remove the connecting rod cap.
(5) Measure the width of the Plastigage at its widest part
by using a scale printed on the Plastigage package.
Standard value: 0.03 – 0.05 mm
Limit: 0.1 mm
Plastigage

ENGINE – Crankshaft and Flywheel11-71
ESEALANT APPLICATION TO OIL SEAL CASE
Specified sealant:
Mitsubishi Genuine Part No. MD970389 or equivalent
NOTE
(1) Be sure to install the case quickly while the sealant is
wet (within 15 minutes).
(2) After installation, keep the sealed area away from the
oil and coolant for approx. one hour.
INSPECTION
CRANKSHAFT OIL CLEARANCE (PLASTIGAGE
METHOD)
(1) Remove oil from the crankshaft journal and the crankshaft
bearing.
(2) Install the crankshaft.
(3) Cut the Plastigage to the same length as the width of
the bearing and place it on the journal in parallel with
its axis.
(4) Install the crankshaft bearing cap carefully and tighten
the bolts to the specified torque.
(5) Carefully remove the crankshaft bearing cap.
(6) Measure the width of the Plastigage at its widest part
by using a scale printed on the Plastigage package.
Standard value: 0.02 – 0.04 mm
Limit: 0.1 mm
CYLINDER BLOCK
(1) Visually check for scratches, rust, and corrosion.
Use also a flaw detecting agent for the check. If defects
are evident, correct, or replace.
(2) Using a straightedge and feeler gauge, check the block
top surface for warpage. Make sure that the surface is
free from gasket chips and other foreign matter.
Standard value: 0.05 mm
Limit: 0.1 mm
(3) If the distortion is excessive, correct within the allowable
limit or replace.
Grinding limit: 0.2 mm
Includes/combined with cylinder head grinding
Cylinder block height (when new): 284 mm
(4) Check cylinder walls for scratches and seizure. If defects
are evident, correct (bored to oversize) or replace.
Plastigage
Plastigage

STEERING – Power Steering Gear Box37A-16
2. Use the special tool to crimp the bellows band.
Caution
(1) Hold the rack housing, and use the special tool
to crimp the bellows band securely.
(2) Crimp the bellows band until the special tool
touches the stopper.
3. Check that the crimped width (A) is within the standard
value.
Standard value (A): 2.4 – 2.8 mm

Readjust the dimension (W) of step (1) to the value
calculated by the following equation, and repeat
step (2).
W = 5.5 mm – A [Example: If (A) is 2.9 mm, (W)
is 2.6 mm.]

Remove the bellows band, readjust the dimension
(W) of step (1) to the value calculated by the
following equation, and use a new bellows band
to repeat steps (2) to (3).
W = 5.5 mm – A [Example: If (A) is 2.3 mm, (W)
is 3.2 mm.]
NTIE-ROD END / TIE-ROD END LOCKING NUT
INSTALLATION
Screw in the tie-rod end until the dimension shown is achieved.
Then, temporarily tighten with the locking nut.
NOTE
The locking nut must be tightened securely only after the
power steering gear box and linkage are installed to the vehicle
and toe-in is adjusted.
TIE-ROD END BALL JOINT DUST COVER
REPLACEMENT
Only when the dust cover is damaged accidentally during
service work, replace the dust cover as follows:
1. Apply grease inside a new dust cover.
2. Using the special tool, press in the dust cover to the
tie rod end.
3. Check the dust cover for cracks or damage by pushing
it with finger.
MB991561
A
212 mm Edge of bellows
assembly grooveLock nut
MB990776