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petercoetzee's Avatar
Join Date: Aug 2014
Location: Cape Town, South Africa (if i buy any parts I ship to US address)
Posts: 216
Guess the PMO carb size

Hi Guys,

so, small heart attack today when the I had the top of the carbs measured at over 50mm. The manifold measures 34mm on the bottom.

Everyone has gone home so I can't ask them to take the carbs off to measure at the butterfly (the correct measurement) this evening, but i have to bite the bullet and place the order tonight still.

I have seen that the manifolds measuring 36mm (bottom) end up at 46mm where the carbs attach. So the smaller ones should end up close to 44mm at the butterfly end....not 50s then surely?


Old 07-11-2016, 09:29 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
Join Date: Jul 2001
Location: Portland Oregon
Posts: 6,992

40mm & 46mm carbs share the same castings; the 50mm ones are different.

The ONLY way you know what you have is to measure the bores just below the throttle plates.
Steve Weiner
Rennsport Systems
Portland Oregon
(503) 244-0990
Old 07-11-2016, 12:39 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)

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