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Quote from: TwoTired on October 27, 2017, 05:34:25 PMYou normally just clean the brass bits. You only need new rubber bits.Aftermarket kits have poor quality control, leading to variances in part dimensions. Original brass has a proven track record of working well when clean.If you must replace, find Keihin parts.Cheers,Where do you get new O-rings for the Keihin parts? What's the best method to clean the brass? Chris
You normally just clean the brass bits. You only need new rubber bits.Aftermarket kits have poor quality control, leading to variances in part dimensions. Original brass has a proven track record of working well when clean.If you must replace, find Keihin parts.Cheers,
Quote from: Greencb350f on October 28, 2017, 04:07:18 AMQuote from: TwoTired on October 27, 2017, 05:34:25 PMYou normally just clean the brass bits. You only need new rubber bits.Aftermarket kits have poor quality control, leading to variances in part dimensions. Original brass has a proven track record of working well when clean.If you must replace, find Keihin parts.Cheers,Where do you get new O-rings for the Keihin parts? What's the best method to clean the brass? Chrishttp://www.jetsrus.com/ email mike@jetsrus.com with photos if you are unsure of what you need. pull/unscrew all the brass and clean with a tooth brush and some carb cleaner. seafoam does well for soaking. make sure the carb bodies and orifices are all cleaned out as well. do it right the first time and you won't have to do it again for a long while. i prefer to completely disassemble the unit and lay all the parts out in front of me before starting.
i imagine you want to replace the rotor. b12 berryman, seafoam, any carb spray and a brush for the scale on the carbs.
Quote from: evinrude7 on November 04, 2017, 08:40:29 AMi imagine you want to replace the rotor. b12 berryman, seafoam, any carb spray and a brush for the scale on the carbs.For rotors all I seem to be finding are used ones on eBay. Does anyone make a new one? I hate to buy one on eBay and find out it is warped too.
Quote from: Greencb350f on October 26, 2017, 05:04:53 PMI rebuilt the carbs with ebay carb kits. Cleaned them out. Adjusted float height and used a drill bit to set the slides evenly as I could. Haven't checked timing, and never used vaccum guages to sync carbs, not even sure if the gauges are for setting the mixture screws or just setting the height of the slides?? This is a gray area for me, but I'd love to learn how. I sprayed starting fluid around the intakes to see if they are leaking but didn't notice anything. How do you properly check for air leaks? Could someone point me to a reasonably priced carb sync guages on eBay?Thanks for the help!OK -- hopefully you saved the original brass (jets, float valves if they were in good shape) when you rebuilt your carbs. Aftermarket brass can work OK, but the original keihin brass is better. You'll want a manometer (sync gauge) to dial in your carb sync (not the mixture screws) -- don't get a cheap Motion Pro one, spend the money for a Morgan Carbtune or if you can find one a mercury gauge. You'll need one. Sounds like you're air tight, although be careful with starting fluid.Do you have a manual? IF not, get one, and read it. You'll need to check your timing, your points, and your valves. IF, however, you have a compression issue (do a compression test as TwoTired mentioned) you're not going to be able to tune it properly. But -- if it's rings that need to re-seat, give it some time and you might as well work on the tuning.
I rebuilt the carbs with ebay carb kits. Cleaned them out. Adjusted float height and used a drill bit to set the slides evenly as I could. Haven't checked timing, and never used vaccum guages to sync carbs, not even sure if the gauges are for setting the mixture screws or just setting the height of the slides?? This is a gray area for me, but I'd love to learn how. I sprayed starting fluid around the intakes to see if they are leaking but didn't notice anything. How do you properly check for air leaks? Could someone point me to a reasonably priced carb sync guages on eBay?Thanks for the help!
