Honda GL1100 Owner's Manual page 82

ITEM
ENGINE
Bore and stroke
75.0 x 61.4 mm (2.95 x 2.42 in)
Compression ratio
9.2 : 1
Displacement
1,085 em' (66.2 eu-in)
Spark plug
Standard
DPR8EA-9 (NGK) or X24EPR-U9 (ND)
For cold climate
(Below 5°C, 41°F)
DPR7EA-9 (NGK) or X22EPR-U9 (ND)
For extended high
DPR9EA-9 (NGK) or X27EPR-U9 (ND)
speed riding
Spark plug gap
0.8-0.9 mm (0.031-0.035 in)
Valve clearance (cold) Intake
0.10 mm (0.004 in)
Exhaust
0.13 mm (0.005 in)
Idle speed
950 ± 100 rpm
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