Size/Thread pitch for air cleaner mounting screws, Big Twin CV40
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Stage I
Joined: Jul 2017
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From: OR
Size/Thread pitch for air cleaner mounting screws, Big Twin CV40
Hello all,
This is probably going to be amusing to some but I'm converting a 1982 Virago 750 from dual to single carb, and I chose a CV40 to do the job. The one I purchased appears to have come out of a big twin of some type, '99-2006 range, not sure if that matters.
Anyway, I have been searching the internet for hours trying to figure out what bolts to use for mounting a custom lightweight air cleaner directly to the carb. I have tried 1/4 20, and the threads do not appear to match up, nor would I like to force them. Does anyone know what the stock bolt thread pitch is, by chance? Any help is greatly appreciated.
This is probably going to be amusing to some but I'm converting a 1982 Virago 750 from dual to single carb, and I chose a CV40 to do the job. The one I purchased appears to have come out of a big twin of some type, '99-2006 range, not sure if that matters.
Anyway, I have been searching the internet for hours trying to figure out what bolts to use for mounting a custom lightweight air cleaner directly to the carb. I have tried 1/4 20, and the threads do not appear to match up, nor would I like to force them. Does anyone know what the stock bolt thread pitch is, by chance? Any help is greatly appreciated.
Outstanding HDF Member
Joined: May 2014
Posts: 2,400
Likes: 284
From: Fort Worth, TX
I just ran a 1/4-20 bolt into the three mounting holes on the front of three different HD CV carbs. Those holes like to get buggered up, run a tap through them and you should be good to go!
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