3.8L ENGINE
| DESCRIPTION |
SPECIFICATION |
|
| Metric |
Standard |
|
| Engine Type |
60° V-6 Engine |
|
| Number of Cylinders |
6 |
|
| Displacement 3.8L |
3.8 Liters |
231 cu. in. |
| Bore 3.8L |
96.0
mm |
3.779 cu.in. |
| Stroke |
87
mm |
3.425 in. |
| Compression Ratio 3.8L |
- |
9.6:1 |
| Firing Order |
- |
1-2-3-4-5-6 |
| Compression Pressure-Minimum |
689.5 kPa |
100 psi. |
| Cylinder Compression (Max. Difference Between Cylinders |
- |
25% |
| DESCRIPTION |
SPECIFICATION |
|
| Metric |
Standard |
|
| Cylinder
Bore Diameter (Standard) 3.8L |
95.993-96.007 mm |
3.7792-3.780 in. |
| Out of Round (Service Limits) |
0.076 mm |
0.003 in. |
| Taper (Service Limits) |
0.051 mm |
0.002 in. |
| Lifter Bore Diameter |
22.980-23.010 mm |
0.905-0.906 in. |
| Deck Surface Flatness (Max.) |
0.1 mm |
0.004 in. |
| DESCRIPTION |
SPECIFICATION |
|
| Metric |
Standard |
|
| Connecting Rod Journal Diameter |
57.979-58.005 mm |
2.2827-2.2837 in. |
| Main Bearing Journal Diameter |
63.993-64.013 mm |
2.5194-2.5202 in. |
| Journal Out-of-Round (Max.) |
0.025 mm |
0.001 in. |
| Journal Taper (Max.) |
0.025 mm |
0.001 in |
| End Play |
0.09-0.24 mm |
0.0036-0.0095 in. |
| Wear Limit |
0.381 mm |
0.015 in. |
| Main Bearing Diametrical Clearance 1-2-3-4 |
0.011-0.055 mm |
0.0005-0.0022 in. |
| Wear Limit |
0.076 mm |
0.003 in. |
| DESCRIPTION |
SPECIFICATION |
|
| Metric |
Standard |
|
| Bearing
Clearance |
0.019-0.065 mm. |
0.017-0.020 in. |
| Wear Limit |
0.074 mm |
0.003 in. |
| Side Clearance |
0.13-0.32 mm |
0.005-0.013 in. |
| Wear Limit |
0.38 mm |
0.015 in. |
| DESCRIPTION |
SPECIFICATION |
|
| Metric |
Standard |
|
| Piston Diameter 3.8L-Measured
33.01 mm (1.30 in) From Piston Top |
95.968-95.998 mm. |
3.778-3.779 in. |
| Clearance in Bore @ Size Location (New) |
-0.005-0.039 mm |
-0.0002–0.0015 in. |
| Weight 3.8L |
426 ± 5 grams |
15.03 ± 0.1764 oz. |
| DESCRIPTION |
SPECIFICATION |
|
| Metric |
Standard |
|
| Type |
Press Fit in Rod (Serviced as a Assembly) |
|
| Clearance
in Piston @ 21C (70°F) |
0.006-0.019 mm |
0.0002-0.0007 in. |
| Clearance in Connecting Rod |
Interference Fit |
|
| Diameter |
22.87-22.88 mm |
0.9007-0.9009 in. |
| Length 3.8L |
71.25-71.75 mm |
2.805-2.824 in. |
| DESCRIPTION |
SPECIFICATION |
|
| Metric |
Standard |
|
| Ring End Gap |
||
| Top Compression Ring |
0.18-0.38 mm |
0.007-0.015 in. |
| Second Compression Ring |
0.28-0.57 mm |
0.011-0.022 in. |
| Oil Control (Steel Rails) |
0.23-0.78 mm |
0.009-0.030 in. |
| Wear Limit-Compression
Rings |
1.0 mm |
0.039 in. |
| Wear
Limit-Oil Control Steel Rails |
1.88 mm |
0.074 in. |
| Ring Side Clearance |
||
| Top Compression Ring 3.8L |
0.030-0.069 mm |
0.0012-0.0027 in. |
| Second Compression Ring 3.8L |
0.041-0.085 mm |
0.0016-0.0033 in. |
| Oil Ring (Steel Ring) |
0.039-0.200 mm |
0.0015-0.0078 in. |
| Wear Limit- Top Ring |
0.10 mm |
0.004 in. |
| Wear Limit-2nd Ring |
0.13 mm |
0.005 |
| Wear Limit Oil Ring Pack |
0.266 mm |
0.009 |
| Ring Width-Top Compression Ring 3.8L |
1.175-1.190 mm |
0.0462-0.0468 |
| Ring Width-2nd Compression Ring 3.8L |
1.46-1.49 mm |
0.0575-0.058 in. |
| Ring Width-Oil Ring (Steel Rails) 3.8L |
0.435-0.510 mm |
0.017-0.020 |
| DESCRIPTION |
SPECIFICATION |
|
| Metric |
Standard |
|
| Journal Diameter |
||
| #1 |
50.724-50.775
mm |
1.997-1.999 in. |
| #2 |
50.317-50.368
mm |
1.9809-1.9829 in. |
| #3 |
49.936-49.987 mm |
1.9659-1.9679 in. |
| #4 |
49.530-49.581 mm |
1.9499-1.9520 in. |
| Bearing Clearance-Diametrical |
0.025-0.101 mm |
0.001-0.004 in. |
| Bearing Clearance
(Max.Allowable) |
0.127 mm |
0.005 in. |
| End Play |
0.254-0.508 mm |
0.010-0.020 in. |
| Camshaft Bearing Diameter |
||
| #1 |
50.800-50.825 |
1.9999-2.0009 in. |
| #2 |
50.393-50.419 mm |
1.9839-1.9849 in. |
| #3 |
50.013-50.038 mm |
1.9690-1.9699 in. |
| #4 |
49.606-49.632 mm |
1.9529-1.954 in. |
| Exhaust
Valve Timing |
||
| Closes-3.8L (ATDC) |
- |
18° |
| Opens-3.8L (BBDC) |
- |
46° |
| Duration-3.8L |
- |
244° |
| Intake Valve Timing |
||
| Closes-3.8L (ABDC) |
- |
63° |
| Opens-3.8L (ATDC) |
- |
1° |
| Duration-3.8L |
- |
242° |
| Valve Overlap-3.8L |
- |
17° |
| DESCRIPTION |
SPECIFICATION |
|
| Metric |
Standard |
|
| Type |
Hydraulic Roller |
|
| Outside Diameter |
22.949-22.962 mm |
0.903-0.904 in. |
| Clearance in Block |
0.020-0.061 mm |
0.0007-0.0024 in. |
| DESCRIPTION |
SPECIFICATION |
|
| Metric |
Standard |
|
| Gasket
Thickness (Compressed) |
0.65-0.75 mm |
0.0007-0.0024 in. |
| DESCRIPTION |
SPECIFICATION |
|
| Metric |
Standard |
|
| Face Angle-Intake |
- |
45-45.5° |
| Face Angle-Exhaust |
- |
45-45.5° |
| Head Diameter-Intake |
47.87-48.13 mm |
1.88-1.89 in. |
| Head Diameter-Exhaust |
35.37-35.63 mm |
1.39-1.40 in. |
| Valve Lift (Zero Lash)-Intake and Exhaust-3.8L |
11.0 mm |
0.433 in. |
| Valve Length-Intake |
125.84-126.6 mm |
4.95-4.98 in. |
| Valve Length-Exhaust |
127.20-127.96 |
5.00-5.04 in. |
| Valve Stem to Tip Height (valve tip to spring seat washer)-Intake |
48.1-49.7 mm |
1.89-1.95 in. |
| Valve Stem to Tip Height (valve tip to spring seat
washer)-Exhaust |
48.53-50.09 mm |
1.91-1.97 in. |
| DESCRIPTION |
SPECIFICATION |
|
| Metric |
Standard |
|
| Angle |
- |
44.5-45° |
| Run Out (Service Limits) |
0.0762 mm |
0.003 in. |
| Width-Intake
and Exhaust |
1.50-2.00 mm |
0.057-0.078 in. |
| DESCRIPTION |
SPECIFICATION |
|
| Metric |
Standard |
|
| Guide
Bore Diameter (Std.) |
6.975-7.00 mm |
0.274-0.275 in. |
| DESCRIPTION |
SPECIFICATION |
|
| Metric |
Standard |
|
| Intake |
0.825-0.973 mm |
0.032-0.038 in. |
| Exhaust |
1.565-1.713 mm |
0.061-0.067 in. |
| DESCRIPTION |
SPECIFICATION |
|
| Metric |
Standard |
|
| Intake
(Standard) |
6.935-6.953 mm |
0.2718-0.2725 in. |
| Exhaust (Standard) |
6.906-6.924 mm |
0.2718-0.2725 in. |
| DESCRIPTION |
SPECIFICATION |
|
| Metric |
Standard |
|
| Intake |
0.025-0.065 mm |
0.001-0.0025 in. |
| Exhaust |
0.059-0.094 mm |
0.002-0.0037 in. |
| Max Allowable-Intake (Rocking Method) |
0.247 mm |
0.010 in. |
| Max Allowable-Exhaust (Rocking Method) |
0.414 mm |
0.016 in. |
| DESCRIPTION |
SPECIFICATION |
|
| Metric |
Standard |
|
| Length |
135.438 mm |
5.33 in. |
| DESCRIPTION |
SPECIFICATION |
|
| Metric |
Standard |
|
| Free
Length-Type A |
51.4 mm |
2.02 in. |
| Free Length-Type B |
53.4 mm |
2.10 in. |
| Wire Diameter Type A |
3.95-4.77 mm |
0.15-0.19 in. |
| Wire Diameter Type B |
4.19-4.29 mm |
0.16-0.17 in. |
| Number of Coils Type A |
7.52 |
|
| Number of Coils Type B |
7.25 |
|
| Spring Tension (Valve
Closed) Type A |
376.4-424.4 N @ 41.9 mm |
84.6-95.6 lbs. @ 1.65 in. |
| Spring Tension (Valve Open) Type A |
863.9-959.9 N @ 41.9 mm |
194.2-215.8 lbs. @ 1.65 in. |
| Spring Tension (Valve Closed) Type B |
377-423 N @ 41.9
mm |
84.8-95.2 lbs. @ 1.65 in. |
| Spring Tension (Valve Open) Type B |
880-962 N @ 30.91 mm |
197.9-216.3 lbs. @ 122 in. |
| Installed Height |
41.1-42.7 mm |
1.61-1.68 in |
| DESCRIPTION |
SPECIFICATION |
|
| Metric |
Standard |
|
| At Curb Idle Speed* (Minimum with engine at operating temperature) |
34.47 kPa |
5 psi |
| At 3000 RPM |
205-551 kPa |
30-80 psi |
| Oil Filter By-Pass Valve Setting |
62-103 kPa |
9-15 psi |
| Oil Pressure Switch Actuating Pressure |
14-28 Kpa |
2-4 psi |
CAUTION: *If pressure is ZERO at curb idle, DO NOT run engine at 3000 rpm. |
||
| DESCRIPTION |
SPECIFICATION |
|
| Metric |
Standard |
|
| Clearance Over rotors-Inner
and Outer |
0.10 mm |
0.004 in. |
| Cover Out-Of-Flat (Max.) |
0.025 mm |
0.001 in. |
| Inner Rotor Thickness |
7.64 mm |
0.301 in. |
| Outer Rotor Thickness (Min) |
7.64 mm |
0.301 in. |
| Outer Rotor Clearance (Max) |
0.039 mm |
0.015 in. |
| Outer Rotor Diameter (Min) |
79.95 mm |
3.148 in. |
| Tip Clearance Between Rotors (Max) |
0.20 mm |
0.008 in. |