1991 MITSUBISHI 3000GT engine

00-44
GENERAL - Main Sealant and Adhesive Table
MAIN SEALANT AND ADHESIVE TABLEMWZA- -
ApplicationRecommendedbrand
1. Sealants for engine accessories
(I 1Sealing between rocker
3M ATDcover and camshaft
Part No. 8660
bearing cap
(4G6 DOHC and 6G7or equivalent
engines only)
(2) l Sealing between semi-3M ATD
circular packing and
Part No. 8660
rocker cover and between
semi-circular packing andor equivalent
cylinder head
l Oil pressure switch
(except 4Gl and 6G7engines)
(3) Engine coolanttemperature switch,Engine coolanttemperature sensor,Therm0 valve,Therm0 switch, Joints,Engine coolanttemperature gauge unit(large size)
3M Nut LockingPart No. 4171
or equivalent
(4) Engine coolanttemperature gauge unit(;.s;il size, MD091 0563M ATDPart No. 8660
or equivalent
(5) Oil pan(except 4G5 engine)MITSUBISHI
GENUINE Part No.
MD9971 10or equivalent
2. Sealing between glass and
weatherstrip
(I 1 l Sealing between
tempered glass and
weatherstrip
l Sealing between body
flange and weatherstrip3M ATD
Part No. 8513or equivalent
3M ATD
Part No. 8509or equivalent
(2) Sealing betweenlaminated glass andweatherstrip
3. Adhesion with ribbon sealer
l Waterproof film for doorl Fender panell Splash shieldl Mudguardl Rear combination lamp
3M ATDPart No. 8509
or equivalent
3M ATDPart No. 8625or equivalent
ApplicationRecommended
brand
4. Adhesives for interior trim
(1)Adhesion of polyvinyl-chloride sheet3M Part No.EC-l 368or equivalent
(2)Adhesion of door
3M ATD
weatherstrip to body
Part No. 8001 or3M ATDPart No. 8011or equivalent
(3) Sealing betweengrommet or packing and
metal seal
(4) l Adhesion of headliningand other interior trimmaterialsl Adhesion of fuel tank
to pad
3M ATDPart No.851 3or equivalent3M
Part-No.
EC-l 368
or 3M ATD Part No.
8080 or equivalent
5. Body sealant3M ATDl Sealing of sheet metal,
Part No. 8531 or
drip rail, floor, body side3M ATDpanel, trunk, front panel and
Part No.8646the like jointsl Sealing of tailgate hingesor equivalent
6. Chassis sealant
(I 1 l Sealing of flange surfaces3M ATD
and threaded portions
Part No. 8659l Fuel gauge unit packingor equivalent
(2)Sealing of flange surfaces,3M ATD
threaded portions, packingPart No.8663
and dust cover
l Differential carrier packingor equivalent
l Dust covers for ball jointand linkage
l Steering gear box packing
and shims
l Steering gear housingrack support cover andtop coverl Mating surface of knucklearm flange
(3)Sealing between accelerator
arm bracket and toeboardDrying sealant
(4)Sealant for drum brakeshoe hold-down pin andwheel cylinder3M ATDPart No.851 3or equivalent
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11-I
ENGINECONTENTS
IMllAA--
CAMSHAFT OIL SEALS....................................
CRANKSHAFT, FLYWHEEL AND
DRIVEPLATE........................................................
CYLINDER BLOCK................................................
CYLINDER HEAD AND VALVE........................
CYLINDER HEAD GASKET................................
ENGINE ASSEMBLY............................................
ENGINE OIL COOLER........................................
GENERAL INFORMATION................................
lbLubricationSystem............................................SectionalView
....................................................
OIL PAN AND OIL PUMP....................................
OIL PAN AND OIL SCREEN................................20
49
5334
23
17
552
3
240
22
PISTON AND CONNECTING ROD....................
ROCKER ARM AND CAMSHAFT....................
SERVICE ADJUSTMENT PROCEDURES........Compression Pressure Check
........................Curb Idle Speed Inspection
............................Drive Belts Tension Adjustment
....................Ignition Timing Adjustment
............................
LashAdjusters
Check........................................Manifold Vacuum
Inspection
.............................
SPECIAL TOOLS....................................................
SPECIFICATIONS................................................General Specifications
....................................
Sealants
.......................................
.....................Service Specifications
....................................
TIMING BELT........................................................
TROUBLESHOOTING........................................44
31
11
15
14
11
13
16
16
84
4
84
26
10

II-2ENGINE - General Information
GENERAL INFORMATIONMllBAEC
SECTIONAL VIEW
I:
7EN0335ii
7EN0334
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ENGINE - General InformationII-3.UBRICATION SYSTEM
7LUOO25
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II-4ENGINE - Specifications
SPECIFICATIONSMllCA--GENERAL SPECIFICATIONS
‘,
‘dItems
Non-Turbo
Turbo
TypeV-type, DOHC
V-type, DOHC
Number of cylinders
6
6
Boremm (in.)
91 .I (3.587)
91 .I (3.587)
Stroke
mm (in.)
76.0 (2.992)
76.0 (2.992)
Piston displacementcc (win.)2,972 (181.4)
2,972 (181.4)
Compression ratio
10.08.0
Firing order
1-2-3-4-5-6
1-2-3-4-5-6
Valve timing
Intake valve
Opens (BTDC)16
16
Closes (ABDC)55”
55”
Exhaust valve
Opens (BBDC)4850”
Closes (ATDC)1517”SERVICE SPECIFICATIONS
MllCE -
Items
Compression pressure
kPa (psi)/rpm
Non-Turbo
Turbo
Compression pressure difference of all
cylinder
kPa (psi)
Manifold vacuum
mmHg (in.Hg.)
Non-Turbo
Turbo
Bas2Tig;ition timing at curb idle speedAct;ir-&yition
timing at curb idle speed
Curb idle speedrpmStandard value
-
-
-
520 (20)
495 (19)
5” f 2”
Approx. 15”700
ZII 100
Limit
min. 980
(139)/250 - 400
min. 810(115)/250-400
max. 100 (14)
d
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L’
LENGINE
- Specifications11-5
Items
Standard value
Limit
Cylinder head
Overall height
mm (in.)
132 (5.20)-0.2 (-,008)’
Flatness of gasket surface
mm (in.)Max. 0.03 l.0012)0.2 (.008)
Oversize rework dimension of valveseat hole
mm (in.)
Intake
0.3 f.012) O.S.36.300 - 36.325 (1.4291 - 1.4301)
0.6 l.024) O.S.36.600 - 36.625 (1.4409 - 1.4419)
Exhaust 0.3
l.012) O.S.33.300 - 33.325 (1.31 IO - 1.3120)
0.6 (.024) O.S.33.600 - 33.625 (1.3228 - 1.3238)
Oversize rework dimension of valveseat hole depth
mm (in.)
Intake
0.3 l.012) O.S.7.5 - 7.7 (.295 - ,303)
0.6 t.024) O.S.
7.8 - 8.0 (.307 - ,315)
Exhaust 0.3 t.012) O.S.7.9-8.1 (.311 - ,319)
0.6 (.024) O.S.
8.2 - 8.4 (.323 - .331)
Oversize rework of valve guide hole
(both intake and exhaust)mm (in.)
0.05 f.002) 0,s.13.050- 13.068(.5138-.5145)
0.25 (.OlO) O.S.13.250- 13.268 (.5217- .5224)
0.50 (.020) 0,s.13.500 - 13.518 (.5315 - .5322)
Samshaft
Cam heightmm (in.)
Intake
35.49 (I .3972)34.99 (1.3776)
Exhaust
35.20 (1.3858)
34.70 (1.3661)
Journal O.D.
mm (in.)
26 (1.02)
Bearing oil clearance
mm (in.)0.05 - 0.09 f.0020 - .0035)
Jalve
Valve lengthmm (in.)
Intake
106.3 (4.185)
Exhaust
105.4 (4.150)
Stem O.D.mm (in.)
Intake
6.6 (.260)
Exhaust6.6 i.260)
Face angle
45 - 45.5”Thick;;ss,yf
valve head (Margin)
Intake
1 .o (.039)0.5 (.019)
Exhaust1.5 (.059)1 .o (.039)
Clearance (Valve stem to guide)
mm (in.)
Intake
0.02 - 0.05 (.0008 - .0020)0.10 l.0039)
Exhaust0.05 - 0.09 l.0020 - .0035)0.12 i.0047)
* Limit must be -0.2 mm (--.008 in.) combined with amount of grinding of cylinder block gasket surface.
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11-6ENGINE - Specifications
Items
Valve guide
Lengthmm (in.)
Intake
Exhaust
Service sizemm (in.)Standard value
45.5 (1.791)
50.5 (1.988)
0.05 f.002). 0.25 (.OlO),0.50 f.020) OversizeLimit
Valve seat
Width of seat contactmm (in.)0.9 - 1.3 (.035 - ,051)
Seat angle44 - 44.5”
Valve spring
Free lengthmm (in.)46.9 (1.846)45.9 (1.807)
LoadN (Ibs.)280 (62) at installed height
Installed heightmm (in.)37.9 (1.492)38.9 (1.531)
Squareness1
Less than 2”4”
Cylinder block
Cylinder boremm (in.)
91 .I0
(3.5866)
Out-of-roundness and taper of cylinderLess than 0.02 i.0008)
boremm (in.)
Flatness of gasket surfacemm (in.)
Less than 0.05 t.0020)0.10 (.0039)
Piston0.D mm (in.)
91 .I0 (3.5866)
Clearance (Piston to cylinder)mm (in.)
0.03 - 0.05 (.0012 - .0020)
Ring groove widthmm (in.)
No. 11.2 (.047)
No. 21.5 f.059)
Oil
3.0 (.I 18)
Service sizemm (in.)
0.25 LO1 0),0.50 (.020),0.75 (.030), 1 .oo l.039)Oversize
Piston ring
Side clearancemm (in.)
No. 1
No. 2
End gap
mm (in.)
No. 1
No. 2
Oil ring side railmm (in.)
Service sizemm (in.)
0.03 - 0.07 (.0012 - .0028)
0.02 - 0.06 l.0008 - .0024)
0.30 - 0.45 (.0118 - .0177)
0.45 - 0.60 (.0177 - .0236)
0.20 - 0.60 (.0079 - .0236)
0.25 (.OlO), 0.50 (.020),0.75 (.030), 1 .oo (.039)Oversize
0.1 (.004)
0.1 (.004)
0.8 i.031)
0.8 l.031)
1 .o (.039)
Connecting rod
Bendmm (in.)
Twist
mm (in.)
Big end to thrust clearancemm (in.)
Piston pin press-in load
N (Ibs.)
0.05 i.0020) or less
0.1 (0.004) or less
0.10 - 0.25 (.0039 - .0098)
7,500 - 17,500 (1,686 - 3,934)
0.4 l.016)
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ENGINE - Specifications
/
L
L/
Items
Connecting rod bearing
Oil clearancemm (in.)
Crankshaft main bearing
Oil clearancemm (in.)
Crankshaft
Pin O.D.
mm (in.)
Journal O.D.mm (in.)
Out-of-roundness of journal and pin
mm (in.)
Taper of journal and pin
mm (in.)
End playmm (in.)
Oil pressure at curb idle speed
kPa (psi)
[Conditions: oil temperature is 75 to 90°C
(167 to
194”F)l
Standard value
0.016- 0.046 (.0006- .0018)
0.019 - 0.044 (.0007 - .0017)
49.9 (I ,965)
59.9 (2.358)
Less than 0.003 (.00012)
Less than 0.005 (0002)
0.05 - 0.25 (0020 - .0098)
80 (I 1.4) or more
Limit
0.1
(.004)
0.1 (.004)
0.3 (.012)
Oil pump
Side clearancemm (in.)
Body clearance0.100-0.181 (.0039-.0071)
Side clearance0.040 - 0.095 (.0016 - .0037)
Relief spring
Free lengthmm (in.)43.8 (1.724)
Load
137 N (8.3 Ibs.)]mm (in.)40.1 (1.579)
Drive belt
For alternator (Vehicle without air
conditioner)
Deflectionmm (in.)
Inspection
4.0-5.5(.157-,216)
New belt3.5-4.0(.138-,157)
Used belt4.0-5.0 (.157- ,197)
TensionN (Ibs.)
Inspection350 - 600 (77 - 132)
New belt650
- 850 (143 - 187)
Used belt450
- 600 (99 - 132)
For alternator and air conditioner
compressor
Deflectionmm (in.)
Inspection
4.0-5.5(.157-,216)
New belt3.5-4.0 (1388.157)
Used belt4.0-5.0(.157-,197)
For power steering pump
Deflection
mm (in.)9.0
- 11 .o (354 - ,433)
Timing belt
Amount of projection of auto tensioner3.8-4.5(.149-,177)rodmm (in.)(distance between the tensioner arm andauto tensioner body)
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