AMERICAN LAFRANCE MODEL “J” V - The V-12 Shop.com

AMERICAN LAFRANCE MODEL "J" V-12 215 HORSEPOWER

ENGINE DATA ? TECHNICAL DATA

CAMSHAFT

MATERIAL

Deep Forged Steel

BEARING JOURNAL DIAMTERS

1

1.8010-1.8005

2

1.7865-1.7860

3

1.7700-1.7695

4

1.7540-1.7535

5

1.7380-1.7375

6

1.7220-1.7215

7

1.7060-1.7055

CAMSHAFT BUSHINGS

NUMBER

7

CLEARANCE LIMITS

.003-.0015

OIL PUMP GEAR BACKLASH

.005

CONNECTING ROD

LENGTH BETWEEN CENTERS

9.438-9.436

BUSHING HOLE DIAMETER

.9345-.9335

BEARING HOLE DIAMETER

2.6280-2.6275

WIDTH BEARING END SIDE PLAY CONNECTING ROD BEARINGS TYPE NUMBER USED ROD HOLE DIAMETER BEARING THICKNESS CRANKSHAFT BEARING SIZE CLEARANCE CRANKSHAFT END THRUST THRUST ON FILLET RADII DIAMETER OF FINISHED AREAS

GEAR FIT MAIN BEARING JOURNAL CRANK PIN FLYWHEEL FLANGE DIAMETER RUNOUT

1.245-1.244 .006-.010

Precision Replaceable 12 2.6280-2.6275 .0625-.0620 2.500-2.499 .004-.002

.009-.004 # 3 Mn. Brg. .125-.093

1.8750-1.8745 3.000-2.999 2.500-2.499

5.250-5.249 .002-Ind. Reading

MAIN BEARINGS

TYPE

Moraine Durex 100

NUMBER USED

4

* POSITION

FRONT

CASE HOLE

3.3755-3.3745

BEARING THICKNESS

.1862-.186

CRANKSHAFT SIZE

3.000-2.999

CLEARANCE

.004-.0015

* Front Main Bearing only is shown since all Bearings and Shaft Journals are the same size. For checking Bearing clearance, use ? wide feeler approximate length of bearings. With feeler placed between bearing and crankshaft, a very light drag should be noticed.

VALVE SPRING

OUTSIDE DIMATER

1 3/32 Max.

WIRE SIZE

.162

LOAD (Valve Closed)

57-62 lbs.

LOAD (Valve Open)

118-126 lbs.

SPRING LENGTH (Valve Closed)

2.1875

SPRING LENGTH (Valve Open)

1.84375

PISTON

MATERIAL

CYLINDER DIAMETER

PIN HOLE DIAMETER

RING GROOVE DIAMETER TOP 2nd and 3rd 4th

RING GROOVE WIDTH 1st 2nd 3rd 4th

RING LAND DIAMETER 1st 2nd, 3rd, 4th, 5th

FIT IN CYLINDER BORE

PISTON RINGS

CYLINDER DIAMETER

GROOVE POSITION 1 TYPE RING WIDTH

Aluminum Alloy 3.6255-3.6243 .8753-.8749

3.221-3.211 3.273-3.263 3.233-3.223

.0975-.0965 .0975-.0965 .0975-.0965 .127-.126

3.593-3.591 3.601-3.597 .005 Feeler; 12-18 lb. Pull

3.6255-3.6245

K-200 Chr. Comp. .0935-.0930

THICKNESS GAP CLEARANCE SIDE CLEARANCE

GROOVE POSITION 2 AND 3 TYPE RING WIDTH THICKNESS GAP CLEARANCE SIDE CLEARANCE

GROOVE POSITION 4 TYPE RING WIDTH THICKNESS GAP CLEARANCE SIDE CLEARANCE

PISTON RING

LENGTH

PIN DIAMETER

DIAMETER PISTON HOLE IN ROD

FINISHED DIAMETER PIN BUSHING

PISTON PIN FIT IN PISTON DESIRED

.181-.171 .020-.010 .0045-.003

Compression .1240-.1235 .155-.145 .020-.010 .0035-.002

Ventilated Oil Control .1865-.1860 .160 Max. .020-.010 .003-.0015

3.050-3.045 .8751-.8749 1.750-1.749 1.5005-1.5003

.0000 to .0005 Tight

................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download