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MVMA Specifications Form
Passenger Car		Car Line     Mustang II     
Model Year     1977    Issued    9-76    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
#2 Cast Iron, Scraper Groove,
Phosphate Coating		Cast Iron, Barrel Face
Moly. Coated, #2 Cast Iron, Scraper Groove,
Phosphate Coating
Width.0780 - .0770.07835 - .0778 (a).078 - .077
Gap.010 - .020.0150 - .0229.010 - .020
OilDescription   #3
material, coating
etc.  Multi-piece		Two Rails and one Spacer-Expander
Rails:
Spacer-Extender: (SAE-30201) B.S.1449 (1956)		Chrome plated (A1S1-c-1075)
Width .023 - .025 (Rails) .177 - .182 (Expander).188
Gap (rails only).010 - .035.016 - .055.015 - .055
ExpandersPart of Oil Ring Assembly

Engine - Piston Pins
MaterialSAE 1016 or 5115 H.T.B.S. 970 or EN - 206SAE 5015 H.T.
Length3.010 - 3.0402.868 - 2.8373.010 - 3.040
Diameter.9119 - .9120.9446 - .9448.9124 - .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 Rod .0007 - .0016 Press Fit.0007 - .0015 Interfer. Press 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.)22.08 - 22.6417.8819.86
Length (center to center)                    5.2031 - 5.20635.142 - 5.1395.09
BearingMaterial & Type (b)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) 170.8 CID #2 ring 0.0980-0.0976
(b) Replaceable Inserts
Page 7
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