I have keihin pwk carb. The # 72RA3 MC. Can any body tell me what carb this is. I measured the inside of the intake side, it measures 1.580 so basically 40mm. I've got a complete rebuilt second over 310 bore. New complete bottom to top . Trying to figure what carb I have. The carb has a duncan racing sticker. Also came off the previous cylinder that says Paul turner eliminator. Thanks any help will be awesome.
