I have also changed the cams from my 83 for those from a 75 and had to adjust timing by a couple of degrees. The GL1000 runs at 32 degrees BTDC @4000 rpm - the GL1100 runs at 38.5 degrees BTDC . Therefore so long as the timing is adjusted to suit the engine will respond accordingly.
No real difference low down but there is a noticeable step , almost a new rev response , at about 4,200rpm. An urgency she did not have before. Allows me to throttle back a little for the same speed ( at 70 mph ) and thus save on fuel. I also use this to have a second ignition set up as a redundant unit in case my main ignition unit dies whilst on the road ( it happened once on holiday a few years back ). It is just a little something I did to make my ride a little more unique . Top speed is not really improved but the way she accepts headwinds and hills makes the mod worthwhile.
Joe- you could not mess up with anything - just a pity that the big pond is in the way because I might have been able to help with the spannering .
By the by = will you use either points or electric for the ignition if used from head unit? Points are easier for adjustment , can adjust timing by altering gap ( bigger gap can alter timing by a very fine amount thus give you a base line to work from ). Electronic assemblies , whilst trickier to set up , give more long term reliability ( points wear out with use and need maintenance )
oh2: :hihihi: :smilie_happy: :mrgreen:
