[sumncguy]

Horsepower bhp
Horsepower RPM
Torque ft lbs
Touque RPM
Valves per cylinder ( looks like 2 per according to a cut away diagram I found )

 

[trike lady]

Found this for the GL1800 http://www.goldwingworld.com/pages/specgl1800.htm
from Honda http://powersports.honda.com/2012/gold-wing/specifications.aspx
They really don't list much.

 

[trike lady]

Not even the factory service manual has the information.
The sales brochure doesn't list it http://powersports.honda.com/Documentum/model_pages/brochure_pdf_files/brochure_2012_gold_wing.pdf
found a you tube video of a GL1800 on a dyno and the numbers produced.

 

[Dookoo]

254 hp to the wheels and 275 ft/lbs torque. 1/4 mile times were in the low 9's. Tires couldn't handle the extra power of the 2012 model

 

[budoka]

Honda doesn't publish hp and ft/lb numbers for any of their bikes since there is no standards for data presented. We had the figures supplied by a member in another post here just the other day, and the numbers on trike lady's vid are close. The video shows more torque (about 10 lbs/ft) and the hp is down by about 5 but doesn't say where the tests were done (altitude, barometrice pressure etc affects dyno numbers) and different dynos give different readings because of calibration. Gross hp and torque specs that I've found on vairous web searches run around 117 hp and 123 lbs/ft. Oh and I think Dookoo's having a bit of a go on you (purely in jest of course)
OK, here ya go, post #8:
http://www.goldwingowners.com/forums/showthread.php?t=9411