Porsche 912 E - Page 14

Crankshaft and Connecting Rods
3 undersizes, each 0. 25 mm smaller in diameter
1-a) Bearings 1-3 • • • • • • • • • • • • Diameter
b) Bearing 4 • • • • • • • • • • • • • Diameter
c) Connecting rod brg • • • • • • • • Diameter
2-Crankshaft runout
at bearings 2 and 4
(1 and 3 on V-blocks) • • • • • • • • Runout
3- • • • • • • • • • • • • • • • • • . • Imbalance
4-Main bearing journal • • • • • • • • Out-of-round
5-Connecting rod bearing journal
•••• Out-of-round
6-Crankshaft/main bearing (including preload exerted
by housing)
a) Bearings
1-3 •••••••••••
b) Steel bearing 2 ••••••••••
c) Bearing 4 • • ••••
Radial play
Radial play
Radial play
7-Crankshaft/main bearing 1
• • • • • • End play
8 -Crank
pin/ connecting rod ••
9-Connecting rod weight •••
Radial play
End play
10-Weight difference between connecting rods
of one engine • • • • • • • • • • • •
11- Piston pin • • • • • • • •
Diameter
12-Connecting rod bushing • • • • • • • Diameter
13-Piston
pin/connecting rod bushing
Radial play
14-Flywheel (measured
in center of clutch
friction surface) • • • • • •. • • • • Lateral runout
Imbalance
Oil seal contact flange ••••.••
Machining flywheel teeth •••••
Clutch
1-Total pressure •
Outside dia.
Pressure
2-Total clutch • • • • • • • • • • • • • Imbalance
3-Clutch pressure plate ••••••
Run out
4-Clutch disc •••••••••••••• Lateral runout
(measured
at 210 mm dia.)
n...t" ...... A t ... r ................ -··
Upon Install.
(New)
59.97-59.99
39.98-40.00.
49.98-49.99
Max. 12 cmg
0.05-0.10
0.03-0.09
0.05-0.10
0.07-0.13
0.02-0.07
0.10-0.40
Max. 6 g
23.99-24.00
24.01-24.02
0.02-0.03
Max. 0.4
Max. 20 cmg
74.9-75.1
1100-1232 lb
(500-560 kg)
Max. 15 cmg
Max. 0.5
General
10
Wear Limit
0.02
0.03
0,03
0.18
0.17
0.19
0.15
0.15
0.70
0.04
74.4
max. 2.0
0.10