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owners manual Alfa Romeo 33
owners manual Alfa Romeo 33 - year of production: 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995 - Alfa Romeo 33 owners manual EN
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from owners manual to the vehicle Alfa Romeo 33, year of production 1983 - 1995:
ENGINE MAIN MECHANICAL UNIT
PISTONS, COMPRESSION RINGS AND PINS
Pistons
u
-a
m
Ia
Unit: mm (in)
Inspection data Engir
1200 1350 1500
Class A (Blua) 79.96 +79.97 (3.1480+ 3.1484) 83.96 f 83.97 (3.3055+ 3.3059)
Class B (Pink) 79.97 f79.98(3.1484+3.1488) 83.97 f 83.98 (3.3059+ 3.3063)
Standard Class C (Green) 79.98+79.99 (3.1488-3.1492) 83.98 -83.99 (3.3063+ 3.3067)
83.99 + 84.00 (3.3067 + 3.3071)
Piston diameter Class 0 (Yellow)79.99 + 80.00(3.1492 e-3.14961
“a” (I) Class E (White) 80.00 G-80.01(3.1496 +3.1500) 84.00-84.01 (3.3071 f3.3075)
1st 80.15+80.17-(3.1X5+3.1563) 84.15F84.17 (3.3130 t3.3138)
Oversize 2nd 80.35-80.37(3.1634+3.1642) 84.35f84.37 (3.3209f3.3217)
3rd 80.55-80.57 (3.1713-3.1720) 84.55G64.57 (3.3287 -3.3296)
1.525 + 1.550
0.0600+0.0610)
1.525+1.545 (2)
First compression ring groove height “c” 0.0600+0.0608) 1.525 + 1.545 (0.0600+ 0.0608)
1.525e1.545
0.0600+0.0608)
(3)
1.775+1.800
0.0699 + 0.0709)
1.775 + 1.795 (2)
Second compression ring groove height “d” 1.775 + I.796 (0.0699+ 0.0707)
0.0699+0.0707~ 1.775 + 1.795
0.0699-0.0707)
(3)
4.015+4.w0
(0.1581 -0.1590)
4.015 G-4.035 (2)
Oil scraper ring groove height“c” 0.1581 +0.1589) 4.015 e-4.035 (0.1581+0.1589)
4.015 e4.035
(0.1581+ 0.1589:
(3)
Pin seat bore “b” 21.002+21.006 (0.8269+0.8270)
(1) To be measured to right angle to the piston pin at 17 mm (0.6693 in) from piston skirt
(2) Borg0 Piston
(3) Mondial Piston
May 1983 m-38
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year of production from: 1983
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Alfa Romeo 33 owners manual
pages 53 - 59
Alfa Romeo 33 owners manual
page 56 / 378
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