MODEL F140

CYLINDER F140

Type

Size

Max. Taper

Bore in

3.1895

.008

Block

3.1875

-

PISTON F140

Pin Hole Dia.

Ring Grove Diameter

Ring Grove Width

Fit In Cyl. Bore

1st

2nd 3rd 4th 1st 2nd 3rd 4th
.8594 2.860 2.860 2.860 2.820 .1265 .126 .126 .251 .003X1/2"Gage
.8592 2.850 2.850 2.850 2.810 .1255 .125 .125 .250 5-10 lbs.

 

Diameter At Bottom Of Piston Skirt

A3 A2 A1 A AA B BB C
3.1852 3.1857 3.1862 3.1867 3.1872 3.1877 3.1882 3.1887

PISTON PIN F140

Pin Diameter

Dia. Hole In Rod

Finished Pin Bushing

Pin Fit In Piston

Clearance In Bushing

Possible

Desired

.8593 .914 .8597 Lite Push Fit .0006 .0004
.8591 .913 .8595 Piston Heated To 160F .0002 -

PISTON RING F140   

Type Of Ring Groove Position Width Thickness Gap Clearance Side Clearance
Taper Face 1 .124 .147 .017 .0035
Compression .123 .137 .007 .0015
Taper Face 2 .124 .147 .017 .0035
Compression .123 .137 .007 .0015
Taper Face 3 .124 .147 .017 .0035
Compression .123 .137 .007 .0015
Ventilated 4 .249 .145 .016 .0025
Oil Control .2485 .135 .008 .001

VALVE GUIDE F140

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
.6575 ..6575 .3432 1-15/32 1-15/32 .0026 .0055 .0015 .0045
.6565 .6565 .3422 - - .0008 .0037 - -

INTAKE VALVE F140

Stem Diameter Max. Stem Wear Minimum Margin Face Angle Clearance Limits Desired Clearance
.3414 .002 .1/32 30 .0026 .0015
.3406 - - - .0008 -

EXHAUST VALVE F140

Stem Diameter Max. Stem Wear Minimum Margin Face Angle Clearance Limits Desired Clearance
.3385 .002 1/32 44 .0055 .0045
.3377 - - - .0037 -

VALVE SEAT (INTAKE) F140

Seat Angle Seat Width Stone Size Narrow Stone Stone Diameter
30 1/16 30 15 -70 1 5/8

VALVE SEAT (EXHAUST) F140

Seat Angle Seat Width Stone Size Narrow Stone Stone Diameter
45 3/32 45 15 -70 1 3/8

VALVE SPRING F140   

Free Length Valve Closed Valve Open
Spring Length Spring Loaded Spring Length Spring Loaded
2 1/16 1 45/64 47-53 lbs. 27/64 96-104 lbs.

CAMSHAFT F140

Bearing Journal Diameter Tappet Hole Diameter Tappet Diameter Clearance Limits End Play
Front Center Rear
1.8725 1.7465 1.2475 1.0005 .9995 .0015 .006
1.8715 1.7457 1.2465 1.0000 .9990 .0005 .004

CAMSHAFT BEARINGS F140

Inside Diameter Clearance Limits Oil Pump Backlash
1 2 3 1 2 3
1.8755 1.7502 1.2505 .004 .0045 .004 .0065
1.8745 1.7495 1.2495 .002 .003 .002 .005

CONNECTING ROD F140   

Side Play Bearing Journal Size Bearing Clearance Desired Clearance
Possible Desired
.006 .007 1.9375 .0022 .001
.009 - 1.9365 .0002 -

CRANKSHAFT F140

Thrust On Front Main Bearing End Thrust Bearing Journal Size Bearing Clearance Desired Clearance Flywheel Run Out
.006 2.250 .0024 .0015 .008
.004 2.249 .0002 - -

 


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