MODEL H277
CYLINDER H277
| Type | Size | Maximum Taper | Above Block |
| Wet Sleeve | 4.000 | .008 | .004 |
| - | 4.002 | - | .0015 |
PISTON H277
| Pin Hole Diameter | Ring Groove Diameter | Ring Groove Width | Fit In Cylinder Bore | ||||||
| 1st | 2nd | 3rd | 4th | 1st | 2nd | 3rd | 4th | ||
| 1.2500 | 3.556 | 3.616 | 3.616 | 3.576 | .129 | .128 | .128 | .253 | .003X1/2"Gage |
| 1.2498 | 3.546 | 3.606 | 3.606 | 3.566 | .128 | .127 | .127 | .252 | 5-10 lbs. |
| Diameter At Top Of Piston | Diameter At Bottom Of Piston | ||||||||
| A | AA | B | BB | C | A | AA | B | BB | C |
| 3.99605 | 3.99655 | 3.99705 | 3.99755 | 3.99805 | 3.9973 | 3.9978 | 3.9983 | 3.9988 | 3.9993 |
PISTON PIN H277
| Pin Diameter | Diameter Hole In Rod | Finished Bushing Diameter |
Pin Fit In Piston |
Clearance In Bushing |
|
|
Possible |
Desired |
||||
| 1.2500 | 1.3753 | 1.2504 |
Lite Push Fit With Piston Heated To 160°F |
.0002 | .0004 |
| 1.2498 | 1.3743 | 1.2502 | .0006 | - | |
PISTON RINGS H277
| Type Of Ring | Groove Position | Width | Thickness | Gap Clear | Side Clear |
| Taper Face | 1 | .124 | .200 | .025 | .006 |
| Compression | .123 | .190 | .013 | .004 | |
| Taper Face | 2 | .124 | .170 | .013 | .005 |
| Compression | .123 | 160 | .008 | .003 | |
| Taper Face | 3 | .124 | .170 | .013 | .005 |
| Compression | .123 | .160 | .008 | .003 | |
| Ventilated | 4 | .2490 | .172 | .025 | .0045 |
| Oil Control | .2485 | .162 | .013 | .003 |
VALVE GUIDE H277
| Outside Diameter | Stem Hole Diameter | Valve Seat Face To Top Of Guide | Valve Stem Clearance Limits |
Desired Stem Clearance |
||||
|
Intake |
Exhaust | Reamed | Intake | Exhaust | Intake | Exhaust | Intake | Exhaust |
| .752 | .752 | .4365 | 1 9/32 | 1 9/32 | .0021 | .005 | .0015 | .004 |
| .751 | .751 | .4360 | - | - | .0008 | .0035 | - | - |
INTAKE VALVE H277
| Stem Diameter | Maximum Stem Wear | Minimum Margin | Face Angle | Clearance Limits | Desired Clearance |
| .4352 | .002 | 1/32 | 30° | .0021 | .0015 |
| .4344 | - | - | - | .0008 | - |
EXHAUST VALVE H277
| Stem Diameter | Maximum Stem Wear | Minimum Margin | Face Angle | Clearance Limits | Desired Clearance |
| .4325 | .002 | 1/32 | 44° | .005 | .004 |
| .4315 | - | - | - | .0035 | - |
VALVE SEAT (INTAKE) H277
| Seat Angle | Seat Width | Stone Size | Narrow Stone | Stone Diameter |
| 30° | 3/32 | 30° | 15°-70° | 1 3/4 |
VALVE SEAT (EXHAUST) H277
| Seat Angle | Seat Width | Stone Size | Narrow Stone | Stone Diameter |
| 45° | 3/32 | 45° | 15°-70° | 1 5/8 |
VALVE SPRING H277
|
Free Length |
Valve Closed |
Valve Open |
||
| Spring Length | Spring Load | Spring Length | Spring Load | |
| 2 3/8 | 1 7/8 | 64-58 lbs | 1.521 | 123-115 lbs |
CAMSHAFT H277
|
Bearing Journal Diameter |
Tappet Hole Diameter |
Tappet Diameter |
Clearance Limits |
End Play |
||
| Front | Center | Rear | ||||
| 1.9965 | 1.7465 | 1.6840 | 1.0005 | .9985 | .003 | .009 |
| 1.9960 | 1.7460 | 1.6835 | 1.0000 | .9975 | .0015 | .005 |
CAMSHAFT BEARINGS H277
|
Inside Diameter |
Clearance Limits |
Oil Pump Backlash |
||||
| 1 | 2 | 3 | 1 | 2 | 3 | |
| 2.000 | 1.750 | 1.6875 | .004 | .004 | .004 | .010 |
| 1.999 | 1.749 | 1.6865 | .0025 | .0025 | .0025 | .008 |
CONNECTING ROD H277
|
Side Play |
Bearing Journal Size |
Bearing Clearance |
Desired Clearance |
|
| Possible | Desired | |||
| .006 | .008 | 2.500 | .0025 | .0015 |
| .010 | - | - | .0005 | - |
CRANKSHAFT H277
|
Thrust On Front Main Bearing |
End Thrust |
Bearing Journal Size |
Bearing Clearance |
Desired Clearance |
Flywheel RunOut |
| .008 | 2.874 | .0027 | .0015 | .008 | |
| .005 | 2.873 | .0005 | - | - |
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