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Penton Owners Group

General Discussion => Penton Racing Talk => Topic started by: Mickey Sergeant on May 07, 2011, 12:13:52 PM

Title: Keihin carbs
Post by: Mickey Sergeant on May 07, 2011, 12:13:52 PM
Has anyone used a keihin carb before.I see they make a 28mm. Just wondering if they are Ahrma legal, and what your thoughts are on them.
Mickey
74 Berkshire
Title: Keihin carbs
Post by: joe novak on May 08, 2011, 11:20:17 AM
I have one on my 74 Penton 125.  I have been told it is a 28 mm.   Joe
Title: Keihin carbs
Post by: brian kirby on May 08, 2011, 11:42:27 AM
The only Keihin that would be AHRMA legal would be one off a '74-75 Elsinore 125. It has to be round slide all the new ones are oval, D or square slide. The Elsinore did use a 28mm if my memory is right, but its no better than a Mikuni and parts are both cheaper and easier to find for the Mikuni.

Brian
Title: Keihin carbs
Post by: Dwight Rudder on May 09, 2011, 03:18:08 AM
Yes, The round slide VM Mikuni is the best carb of the era.  Sadly the newer oval and flat slide Mikuni are not as good as the Keihin. Back then a Keihin was primarily a 4 stroke carb.
Title: Keihin carbs
Post by: joe novak on May 11, 2011, 04:37:08 PM
Good point, Dwight.  Any carb which was jetted for a four-stroke might not be ideal for a two-stroke engine.
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