AJS G2 - Page 8

Sprocket Sizes
Engine
Gear box
Clutch
Rear Wheel
Chain S izes
Front
Rear
Carburettor
Main jet
Pilot jet
Throttle slide
Needle jet
Needle location
Spark Plug
22 teeth
18 teeth
46 teeth
55 teeth
Duplex .315 x .638" (72 links)
½" x .305" (124 links)
Type 389/82 (18" bore)
Size 200
Size 30
3
Size .106"
Central notch
FE 80
250 c.c. CSR 1965/66 Models
Compression Ratio
Ignition Timing
Valve spring (coil type)
Gear Ratios
Internal Ratios
Top
Third
Second
First
Actual Ratios
Top
Third
Second
First
Spark Plug
Piston Rings
Compression rings
Diameter
Width
Radial Thickness
Scraper ring
Diameter
Width
Radial Thickness
Piston Ring Gap
Valve Timing
Inlet valve opens
Exhaust valve closes
9.5 to 1
24 degrees (x") full advance
inner free length 1.531"
outer free length 1.700"
1 to 1
1.24 to 1
1.75 to 1
2.76 to 1
6.5 to 1
8.05 to 1
11.68 to 1
17.97 to 1
K.L.G. FE 220
2¾" (69.85 mm.)
.0625"—.0615"
.112"—.106"
2¾" (69.85 mm.)
.156"—.155"
.112"—.106"
.008"—.013"
40° B.T.D.C. with .010" rocker
40° A.T.D.C. clearance.
6
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