Superior IO-360 SERIES Overhaul Manual

Overhaul Manual
O-360 and IO-360 Series Engines
FITS AND CLEARANCES
General
These limits provide dimensions, clearances and
interference fits necessary to repair and overhaul
Superior Vantage O-360 and IO-360 series
engines. Service limits for used parts are
provided where they have been established. If
no service limits are provided, new limits must be
maintained.
Service Limits
• Dimensional Limits are provided in Table 72-
00-11.1.
• Backlash and Clearances Limits are provided
in Table 72-00-11.3.
• Torque Limits are provided in Table 72-00-
11.2.
• Spring Limits are provided in Table 72-00-
11.4.
• Crush Type Gasket Tightening Angles are
provided in Table 72-00-11.5.
NOTE:
Limits followed by the letter "T" indicate
a "tight", i.e., an interference fit. An
example is the fit of the valve guide in
the cylinder head. Where no "T” exists,
the fit is a clearance dimension.
Table 72-00-11.1 • Dimensional Limits
Description of Limit Minimum (in.) Maximum (in.)
Piston
Piston in Cylinder (Bottom of Skirt Clear) 0.0065 0.0095
Piston Weight Difference (Opposing Pairs) - .4 oz.
Piston Rings
Piston Ring in Groove Side Clearance (Top Compression) 0.0025 0.0055
Piston Ring in Groove Side Clearance (2
nd
Compression) 0.0000 0.0040
Piston Ring in Groove Side Clearance (3
rd
Oil) 0.0020 0.0040
End Gap (Top Compression) 0.0450 0.0550
End Gap (2
nd
Compression) 0.0450 0.0550
End Gap (Oil Control) 0.0150 0.0300
NOTE: Measure end gaps 1.0" to 4.0" from bottom of barrel. Minimum ring gap at top of stroke is
0.0075" (measure compression ring gaps approx. 6.5" from bottom of barrel and oil ring
gap approx. 6” from bottom of barrel).
Piston Pin
Piston Pin and Plug in Cylinder (End Clear) 0.0250 0.057
Piston Pin in Piston (Diameter) 0.0003 0.0014
Piston Pin in Connecting Rod Bushing 0.0008 0.0021
Connecting Rod
Bearing to Crankpin 0.0008 0.0038
Connecting Rod to Crankshaft (Side Clear) 0.0040 0.0100
Connecting Rod Weight Difference (Opposing Pairs) - 1 oz.
Connecting Rod Crankpin Bore to Piston Pin Bore Twist - .001 in. per in.
Connecting Rod Crankpin Bore to Piston Pin Bore Convergence - .001 in. per in.
1
© March 2005 Superior Air Parts Inc.
72-00-11
Fits and Clearances

Superior IO-360 SERIES Specifications

General

Brand	Superior
Model	IO-360 SERIES
Category	Engine
Language	English