Fuel filters are no longer included in Randakk Master Carb Kits. But, it would be a crime to redo your carbs and not take prudent measures to ensure a pure fuel supply! I recommend the OEM Honda filter as a high quality replacement unit. More on the topic of aftermarket fuel filters here.
Left: Restored GL1000 Carbs by Jouko Tomminen of Lahti, Finland
Right: Restored GL1100 Carbs (by Randakk)
Testimonials: click hereDisclaimers: click here
For information on Randakk's Approved Honda Carb Rebuilder Program click here
Regarding GL1000 carbs, I strongly recommend that you retain the original 4 carb setup. You may be tempted to trash your carbs and go to a single carb conversion. These work well enough, but I don't personally recommend them. Most people who invest in these setups report significant performance "improvements." However, they are comparing their results with their dirty, poorly maintained and malfunctioning original carbs.
For more on that topic click here.
Allow me a little soapbox time. Early GL1000s are routinely criticized for having poor carburetion. The criticism has been repeated so often by so many that it has become accepted as fact. Here is my contrarian view: the early GL1000s have great carburetion setups! My personal '75 GL1000 show bike has flawless, near-linear carburetion…rheostat-like throttle response, no flat spots, starts easily, warms up fast enough and has a decent idle. My carbs are stock except for a few minor tweaks I make on all the carbs I service. I've owned and ridden many bikes. I believe the stock setup on a GL1000, properly maintained and tuned delivers results as good as you can reasonably expect on a 4 cylinder, 4 carb bike of this vintage with this level of performance.
If your carbs are clean (I mean REALLY), all your vacuum hoses are good, your air-cut off valve fresh, choke linkage free, butterfly pivots not worn out, floats set and operating correctly, vacuum pistons free, air and fuel filters fresh and you've synchronized AFTER all other tune-up issues are perfect, you should have excellent results. By the way, all bets are off if you've replaced the OEM exhaust with something else.
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