Ring Free carbon remover. It works, Read

[jasonm.]

1st my Royale has had the carbs EGA'd(not running rich or lean) and also I sync them every spring, AKA perfectly tuned. Yamaha has been selling "Ring Free" carbon remover for at least 10 years. Owning this bike for more than 25yrs. My 1st gen. approaching 90k developed "pinging"(pre-ignition) . Which we all know is bad. These bikes were made to run on 87 octane(look on inside side cover panel). And that was no longer possible in the summer months. Ring Free comes in a 10 oz. bottle. approx. $15. Says put 2 oz. per gallon for shock treatment. This works out great for 1st gens with a full tank. AND DRAIN the oil afterwards. This due to possible "blow bye". Yes, oil will look a bit uglier than when you started if it did not have many miles on it. Ideally you will drive the bike w/o stopping. Which is exactly what I did and kept the tach 95% of the ride over 4000rpm(typically close to 5000) on the interstate-5th gear. Yes, I was speeding for 2.0 hours and 160 miles...do the math. I also did a few top speed runs seeing 6500+ in 5th gear and pegging the speedo. Note: at the beginning of the run before hitting the interstate it did not idle normally. Hell, I just put a less ignitable item in the gas ...this is normal. Thus, I recommend using 87 octane during this, as I did. As 87 is easier to ignite.... RESULTS>overall bike idles smoother, never mind even with carbs sync'd every spring, this made a big difference. Also NO MORE pinging on 87 octane when giving it the gas below 3000rpm or any RPM in 5th for that matter. I often gas it moderately in 5th at 2500...happy me. As I can troll along at 2000 rpm 5th gear if I want to. And it always pulls when gassed and no hesitation or vibration. Just goes as if it's EFI'd. Lastly the following mornings for a few days. When starting the bike you see the typical water on the ground with turned down pipes, from over night condensation blowing out the exhaust. After the water dried up, I saw PLIES of carbon with that water. Needless to say...this stuff does the job.

Edited July 3, 2015 by jasonm.