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MVMA Specifications Form
Passenger Car		Car Line     Mustang II     
Model Year     1975    Issued    9-74    Revised (o)      
 Engine Displacement
 
140
(2300 cc)		170.8
(2800 cc)		302
(4900 cc)
Engine - Piston Rings
Function
(top to
bottom)		No. 1 oil or comp.           Compression
No. 2 oil or comp.Compression
No. 3 oil or comp.Oil Control
Compres-
sion		Description   #1
material, coating#2
etc.		Cast Iron, Molybdenum Coating
Cast Iron, Scraper Groove,
Oxide Coating		Cast Iron, Chrome Plated
# 2Cast Iron, Scraper Groove,
Phosphate Coating		Cast Iron, Barrel Face
Moly. Coated, #2 Cast Iron, Scraper Groove,
Phosphate Coating
Width(#1 & #2) .0780 - .0770(#1) .07835 - .0778 (#2) .0980 - .0976(#1 & #2) .078 - .077
Gap(#1 ) .010 - .035 (#2) .010 - .020(#1 & 2) .0150 - .0229(#1 & 2) .010 - .020
OilDescription   #3
material, coating
etc.  Multi-piece		Two Rails and one Spacer-Expander
Rails: Chrome Plated-Spring Steel
Spacer-Extender: (SAE-30201) B.S.1449 (1956) (A1S1-C-1075)
Width - Rails(.177 - .182 Exp.)(.023 - .025 ).150 - .158.188
Gap (rails only).010 - .035.016 - .055.015 - .055
ExpandersPart of Oil Ring Assembly

Engine - Piston Pins
MaterialSAE 5015 Heat TreatedB.S. 970 or EN - 206 (a)SAE 5015 Heat Treated
Length3.010 - 3.0402.868 - 2.8373.010 - 3.040
Diameter.9121 - .9119.9457 - .9454.9124 - .9118
TypeLocked in rod in
piston, floating, etc. 		Pressed Fit in Rod
Bushing - In rod or pistonNONE
Bushing Material--
ClearanceIn Piston .0002 - .0004.0003 - .0006.0002 - .0004
In RodPressed Fit
Direction & amount offset in piston     Right .060Right .032Right .0625

Engine - Connecting Rods
MaterialForged Steel (SAE-1041-H) I-Beam SectionSAE-1541-H
or SAE-1151-M
Weight (oz.)26.5617.8819.86
Length (center to center)                    5.2031 - 5.20635.142 - 5.1395.09
BearingMaterial & Type (a)Plated Copper -
Lead on Steel Back		Unplated Copper -
Lead on steel back 		Plated Copper -
Lead on Steel Back
Overall Length .790 - .800.649 - .639.726 - .706
Clearance (limits).0008 - .0024.0006 - .0021.0008 - .0026
End Play.0035 - .0105.004 - .011.010 - .020 Two Rods
(a) Replaceable Inserts
Page 7
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