{"id":15865,"date":"2016-06-03T21:02:52","date_gmt":"2016-06-04T02:02:52","guid":{"rendered":"http:\/\/www.chinonthetank.com\/?p=15865"},"modified":"2016-07-22T19:56:19","modified_gmt":"2016-07-23T00:56:19","slug":"cb650-keihin-crs29-carbs","status":"publish","type":"post","link":"https:\/\/www.chinonthetank.com\/2016\/06\/cb650-keihin-crs29-carbs\/","title":{"rendered":"cb650 keihin crs29 carbs"},"content":{"rendered":"
If you have a cb650 (or any jap 4cyl) and you’re looking to splurge close to an extra $1000… This post is for you.<\/p>\n
79-80 cb650 actually have pretty good stock-oem carbs IMO: 29mm bore, mechanical slide and accelerator pump. However, if yours are getting shitty and want a nice upgrade, brand new keihin crs29 smoothbore race carbs are the way to go. <\/p>\n
If you have the shitty 81-82 constant velocity carbs, bummer for you. Def upgrade to the keihin crs.<\/p>\n
If you have a 4-1 exhaust, and you’re basically at sea level, above is the jetting I recommend to get you in the ballpark… to then fine tune.<\/p>\n
Yea, if you have a 4cyl jap bike… These are the best carbs you can pick up, hands down. I also have a set on a 74 Kawasaki z1 and I love them. Don’t put carbs on your bike that are too big bore. Some people upgrade to the Mikuni RS34, which are too big. For a 4cyl, I love the Keihin CRS, and for a twin or single cylinder, I like the Mikuni VM.<\/p>\n
These carbs will work great on any 70s Honda CB 500, 550, 650, 750 4cyl.<\/p>\n
However, on 500, 550, you should run the keihin crs26. Slightly smaller bore will work better.<\/p>\n