Maximum
Maximum
Manufacturer's
allowable
allowable
Desired
dimensions
clearance
wear
clearance
and tolerance
in inches
Min
Max.
Min
Max.
th
4 ring (oil)
Width-------------------------------------------
0.248
0.249
-----------------
--------------
-----------------
--------------
Thickness-------------------------------------
0.208
0.218
-----------------
--------------
-----------------
---------------
Gap clearance--------------------------------
0.018
0.032
0.018
0.032
----------------
0.006
Side clearance-------------------------------
0.0015
0.0035
0.0015
0.0035
----------------
Piston pin.
Length---------------------------------------
4.524
4.529
------------------
-------------
----------------
---------------
Pin dia---------------------------------------
1.7498
1.7500
------------------
-------------
1.7495
---------------
Pin to piston-------------------------------
--------------------
----------------
0.0001
0.0030
----------------
---------------
Bushing id (finished)---------------------
1.7503
1.7505
0.0003-
0.0007
----------------
0.0017
Bushing length----------------------------
1 15/16
-----------------
------------------
-------------
----------------
---------------
Bushing od---------------------------------
1.941
1.944
------------------
-------------
----------------
---------------
Connecting rods.
Length (center to center) --------------
10.498
10.502
------------------
-------------
----------------
---------------
Bushing hole dia -------------------------
1.937
1.938
------------------
-------------
----------------
---------------
Bearing hole dia -------------------------
3.6915
3.6950
------------------
-------------
----------------
---------------
Bearing thickness. ----------------------
0.0950
0.0955
------------------
-------------
0.0945
---------------
Width at bearing end--------------------
2.426
2.428
0.008
0.012
----------------
---------------
Crankshaft.
Main journal dia--------------------------
3.749
3.750
0.0020
0.0046
3.748
0.005
Main journal limits-----------------------
------------------
--------------
0.0012
0.004
----------------
---------------
Crankshaft end play--------------------
------------------
--------------
0.005
0.008
----------------
0.010
Crankpin dia------------------------------
3.499
3.500
0.002
0.004
3.498
0.0045
Crankpin limits---------------------------
------------------
--------------
0.0005
0.0035
----------------
---------------
Camshaft
Journal dia (all)---------------------------
2.2470
2.2480
-----------------
------------
2.2465
---------------
Cam lift:
0.374
Camshaft bushing id--------------------
2.2495
2.2500
2.2510
--------------
Camshaft end play
-----------------
--------------
0.004
0.006
----------------
--------------
Tappets
Tappet dia----------------------------------------
0.6082
0.6087
------------------
-------------
0.6072
--------------
Tappet guide id--------------------------------
0.6089
0.6101
0.0019
0.0002
0.6111
0.0029
Valves.
Valve length (overall)-------------------------
7 1/4
-----------------
------------------
--------------
-----------------
--------------
Stem dia-----------------------------------------
0.4955
0.4965
------------------
--------------
0.4935
--------------
Head dia-----------------------------------------
2.245
2.255
------------------
--------------
-----------------
---------------
Valve and seat angle-------------------------
45
45
------------------
--------------
-----------------
---------------
Stem clearance (desired):
Intake ---------------------------------------
--------------------
-----------------
0.002
0.002
-----------------
---------------
Exhaust .-----------------------------------
--------------------
-----------------
0.0035
0.0035
-----------------
---------------
Stem clearance (limits ):
Intake ---------------------------------------
--------------------
-----------------
0.0008
0.0023
----------------
0.0043
Exhaust ------------------------------------.
--------------------
-----------------
0.0025
0.0045
-----------------
0.0065
Valve guides
Length:
Intake-----------------------------------------
3 13/16
-----------------
------------------
--------------
-----------------
---------------
Exhaust--------------------------------------
4 1/8
-----------------
------------------
--------------
-----------------
---------------
Outside dia:
Intake and exhaust------------------------
0.8755
0.8765
------------------
--------------
-----------------
---------------
Inside dia
Intake-----------------------------------------
0.4973
0.4978
-----------------
--------------
0.4993
---------------
Exhaust--------------------------------------
0.4990
0.5000
-----------------
--------------
0.5015
---------------
Cylinder head face to top of guide:
Intake-----------------------------------------
1 17/32
-----------------
------------------
-------------
-----------------
---------------
Exhaust--------------------------------------
1 1/2
-----------------
-----------------
-------------
-----------------
---------------
TAGO 5030A
8
