Maximum
Maximum
Manufacturer's
allowable
allowable
Desired
dimensions
clearance
wear
clearance
and tolerance
in inches
Min
Max.
Min
Max.
2d and 3d (compression):
Width----------------------------------------------
0.123
0.124
------------------
-------------
-----------------
----------------
Thickness----------------------------------------
0.170
0.180
------------------
-------------
-----------------
----------------
Gap clearance----------------------------------
------------------
----------------
0.013
0.025
-----------------
----------------
Side clearance----------------------------------
------------------
----------------
0.0025
0.0045
-----------------
----------------
th
4 (oil)
Width----------------------------------------------
0.248
0.249
-------------------
-------------
----------------
---------------
Thickness----------------------------------------
0.170
0.180
-------------------
-------------
----------------
----------------
Gap clearance----------------------------------
-------------------
---------------
-------------------
0.013
0.025
----------------
Side clearance----------------------------------
-------------------
---------------
-------------------
0.002
0.001
----------------
Piston pin.
Length---------------------------------------
3.620
3.625
-------------------
-------------
-----------------
----------------
Pin dia---------------------------------------
1.2498
1.2500
-------------------
-------------
-----------------
----------------
Pin to piston-------------------------------
--------------------
----------------
0.0001
0.0002
-----------------
----------------
Bushing id (finished)---------------------
1.2503
1.2506
-------------------
-------------
-----------------
----------------
Bushing length----------------------------
1.552
1.572
-------------------
-------------
-----------------
----------------
Bushing od---------------------------------
1.4420
1.4440
-------------------
-------------
-----------------
----------------
Connecting rods.
Length (center to center) --------------
8.246
8.248
-------------------
-------------
-----------------
----------------
Bushing hole dia -------------------------
1.437
1.438
-------------------
-------------
-----------------
----------------
Bearing hole dia -------------------------
2.7130
2.7135
-------------------
-------------
-----------------
----------------
Bearing thickness. ----------------------
0.0748
0.0753
-------------------
-------------
-----------------
----------------
Width at bearing end--------------------
1.6775
1.6795
0.006
-------------
-----------------
0.010
Crankshaft.
Main journal dia--------------------------
2.9985
2.9995
0.0025
0.0025
-----------------
---------------
Main journal limits-----------------------
------------------
--------------
0.0012
0.0039
-----------------
---------------
Crankshaft end play--------------------
------------------
--------------
0.005
0.008
-----------------
---------------
Crankpin dia------------------------------
2.560
2.561
0.0026
0.0026
-----------------
---------------
Crankpin limits---------------------------
------------------
--------------
0.0014
0.0039
-----------------
---------------
Crankpin length--------------------------
1.6855
1.6875
-----------------
------------
-----------------
---------------
Camshaft
Journal dia (all)---------------------------
2.242
2.243
-----------------
------------
-----------------
---------------
Cam lift:
Intake------------------------------------
0.3395
--------------
-----------------
------------
-----------------
--------------
Exhaust---------------------------------
0.352
--------------
-----------------
------------
-----------------
--------------
Camshaft bushing id--------------------
2.2445
2.2450
0.0015
0.0030
-----------------
--------------
Camshaft end play
-----------------
--------------
0.005
0.009
-----------------
--------------
Valves.
Valve length (overall)--------------------
6 1/16
--------------
-----------------
-----------
-----------------
--------------
Stem dia------------------------------------
0.4335
0.4345
-----------------
-----------
-----------------
--------------
Head dia:
Intake------------------------------------
1.995
2.005
-----------------
------------
-----------------
--------------
Exhaust----------------------------------
1.620
1.630
-----------------
------------
-----------------
--------------
Valve and seat angle-------------------
45
--------------
-----------------
------------
-----------------
--------------
Stem clearance (desired):
Intake------------------------------------
------------------
--------------
0.0025
0.0025
-----------------
---------------
Exhaust----------------------------------
------------------
--------------
0.0055
0.0055
-----------------
---------------
Stem clearance (limits):
Intake------------------------------------
------------------
--------------
0.0015
0.0035
-----------------
--------------
Exhaust----------------------------------
------------------
--------------
0.0045
0.0065
-----------------
---------------
Valve guide.
Length---------------------------------------
Intake------------------------------------
2 13/16
--------------
-----------------
-----------
----------------
--------------
Exhaust----------------------------------
3 3/8
--------------
-----------------
------------
-----------------
---------------
Outside dia:
Intake and exhaust-------------------
0.813
0.814
-----------------
------------
----------------
--------------
TAGO 5030A
6
