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Workshop => Carburetor, Intake, and Exhaust => Topic started by: Racing farmer 88r on May 06, 2015, 01:57:51 AM

Title: Carb issues
Post by: Racing farmer 88r on May 06, 2015, 01:57:51 AM

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.

Title: Carb issues
Post by: croat1 on May 06, 2015, 02:46:11 AM

the number you give is for a 39mm carb.  having a Duncan sticker on it and coming off a PT cylinder makes be think it has been bored to the size you measured.