Originally Posted by Lornce
If you want to do a rtw trip I wouldn't recommend a 1000cc top end. Won't harm longevity, but it'll undermine the fuel range. Range is a bigger issue for travel than power, imho.
An R80 has more than enough power to negotiate anything you're likely to encounter travelling the world.
A buddy of mine gets consistently better gas mileage on a GSPD with a 9.5:1 1000cc engine. The taller final drive and higher compression make quite a difference.