ENGINE PARTS (Standard Size, New)
MINIMUM
MAXIMUM
LIMITS
Blower Drive Gear
Backlash ............ ....................................................
.0030 "
.0080 "
.0100 "
Gear-to-hub fit ....................................................................
.0005 "press.
.001 "loose
Support-to-end plate ......... .......................................... .0005 "press.
.0025 "loose
Inside diameter (support bushing) .......................................
1.6260 "
1.6265 "
Hub diameter (at bearing) ...............................................
1.6240 "
1.6250 "
Hub-to-support bushing clearance .... ...................................
.0010 "
.0025 "
.0050 "
Hub-to-cam clearance .............. ...........................................
.0020 "
.0070 "
End thrust (current bearing) ..............................................
.0060 "
.0140 "
Cylinder Head
Flatness--transverse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.0040 "
Flatness--longitudinal (4 cyl.) ..............................................
.0080 "
Distance between top deck and fire deck .............................
3.5560 "
3.5680 "
3.5360 "
Water nozzles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.0312 "Recess
Flush
Cam follower bores ..........................................................
1.0620 "
1.0630 "
1.0650 "
Exhaust Valve Seat Inserts
Seat width--31 ......................................................................
.0468 "
.0937 "
.0937 "
Valve seat runout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.0020 "
.0020 "
Exhaust Valves
Stem diameter (4-valve) . . . . . . . . . . . . . . . . . . . . . . . . . . .
.3100 "
.3105 "
.3090 "
Valve head-to-cylinder head:
30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.023 "recess.
.006 "protr.
.038 " recess.
Valve Guides
Height above cylinder head:
2-valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5938
"
1.5938 "
4-valve (chamfered guide) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.8800
"
.8800 "
4-valve (machined guide) . . . . . . . . . . . . . . . . . . .
.6900
"
.6900 "
Diameter--inside (4-valve) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.3125
"
.3135 "
.3140 "
Clearance--valve-to-guide (4 valve) . . . . . . . . . . . . . . . . . .
.0020
"
.0035 "
.0050 "
Valve Bridge Guides
Height above cylinder head . . . . . . . . . . . . . . . .
2.0400 "
2.0400 "
Rocker Arms and Shafts
Diameter--rocker shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.8735 "
.8740 "
Diameter--inside (rocker arm bushing) . . . . . . . . . . . . . . . .
.8750 "
.8760 "
Clearance--shaft-to-bushing . . . . . . . . . . .
.0010 "
.0025 "
.0040 "
Cam Followers
Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.0600 "
1.0610 "
Clearance--follower-to-head . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.0010 "
.0030 "
.0060 "
Rollers and pins:
Clearance--pin-to-bushing . . . . . . . . . . . . . .
.0013 "
.0021 "
.010 "Horiz.
Side clearance--roller to follower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.0230 "
.0110 "
.0230 "