MODEL F124

CYLINDER F124

Type Size Max. Taper Above Block
Bored In 3.002 .008 -
Block 3.000 - -

PISTON F124

Pinhole Diameter

 

Ring Grove Diameter Ring Grove Width Fit in Cyl

Bore

1st 2nd 3rd 4th 1st 2nd 3rd 4th
.8994 2.684 2.684 2.884 2.664 .1235 .1235 .1235 .253 .002x.5" Gauge
.8952 2.674 2.674 2.874 2.634 .1275 .1275 .1275 .252 5-10 Lbs.

 

Diameter at Bottom of Piston Skirt

A3 A2 A1 A AA B BB C CC D DD
2.99725 2.99775 2.99825 2.99875 2.99925 2.99975 3.00025 3.00075 3.00125 3.00175 3.00225
2.99775 2.99825 2.99875 2.99925 2.99975 3.00025 3.00075 3.00125 3.00175 3.00225 3.00275

PISTON PIN F124

Pin Diameter Diameter Hole In Rod Finished Bushing Diameter Pin Fit In Piston Clearance In Bushing
Possible Desired
.8593 .914 .8597 Lite Push Fit .0002 .0004
.8591 .913 .8595 Piston Heated To 160 F .0006 -

PISTON RING F124

Type Of Ring Groove Position Width Thickness Gap Clear Side Clear
Taper Face 1 .124 .135 .013 .004
Compression .123 .125 .008 .002
Taper Face 2 .124 .135 .013 .004
Compression .123 .125 .008 .002
Taper Face 3 .124 .135 .013 .004
Compression .123 .125 .008 .002
Ventilated 4 .249 .139 .017 .0025
Oil Control .2485 .129 .007 .001

VALVE GUIDE F124

Outside Diameter Stem Hole Diameter Valve Seat Face to Top Of Guide Valve Stem Clearance 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 F124

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

EXHAUST VALVE F124

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

VALVE SEAT (INTAKE) F124

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

VALVE SEAT (EXHAUST) F124

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

VALVE SPRING F124

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

CAMSHAFT F124

Bearing Journal Diameter Tappet Hole Dia. Tappet Dia. Clearance Limits End Play
Front Center  Rear
1.8725 1.7465 1.2475 1.0005 .9995 .0015 .006
1.8715 1.7456 1.2465 1.0000 .9990 .0005 .004

CAMSHAFT BEARINGS F124

Inside Bearings 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 .003

CONNECTING ROD F124

Side Play Bearing Journal Size Bearing Clearance Desired Clearance
Possible Desired
.010 .006 1.9375 .0022 .001
.006 - 1.9365 .0002 -

CRANKSHAFT F124

Thrust On Front Main Bearing End Thrust Bearing Journal Size Bearing Clearance Desired Clearance Flywheel Runout
.006 2.250 .0024 .001 .008
.004 2.249 .0002 - -

 


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