What's the largest CV (bore) that came on a Harley?

[greybeard_541]

Looking for something more than a 40mm CV- is there such an animal?

thanks!

[calif phil]

Not that came stock. 

[Dagwood]

Screamin' Eagle has CV44's and CV51's.  I think both are still available, 27934-99 and 27928-07A.  Not cruise control compatible though.  They did have a CV44 that was but it's discontinued.

[Hossamania]

Got a 44 on my 95" motor. Works great.

[76shuvlinoff]

Got an SE 44mm on my 93" shovel.  Might be a bit of overkill because it's coldblooded for a couple minutes.  Sweet runner warmed up though.The 40mm I had on before that seemed to run out of breath at the top.  I have no doubt a more knowledgeable guy could've made the 40 work fine.

Mark

[jmorton10]

Got a 44 on my 95" motor. Works great.

I have a Bob Wood Rebel 43.5 on my old 95" 04 RK, it has run great for years with it.

http://www.woodcarbs.com/carbs.htm

~John

[Hybredhog]

     The Bob woods units are great, but a pretty pricey commitment. I use to bore out stock 40s' to a 42mm, and used older Kiehin butterfly throttle plates, worked out great for minor head mods & 95ci. builds. Harley has the 51mm in the SE books, but I believe they are discontinued & also the tuning kit for them, which is a must have. That's what I'm using on my 124, and is very user friendly. Harley has also discontinued the N65C needles, along with most all the repair parts for CV's.

[greybeard_541]

Okay... thanks for all the input- but maybe I should clarify what I asked.

Building an engine (not Harley) that requires one side draft carb and will be 110" motor.  I have a 38mm CV on my 74" pan and love how it works. Have built a few for pals and they love 'em.

Now, this motor is not a hot rod, just will run strong. I think the CV platform is perfect for what needs to happen. I hope this helps you all in the recommendations.

In advance- thanks heaps!
Pat

[FlaHeatWave]

To my knowledge, the largest stock is 40mm.

As posted above SE has (had?) 44mm & 51mm, the 44 is just a bored out 40 (same body), the 51 is a totally different piece. The hot setup is the ThunderSlide (plastic vs metal slide ~ much more responsive), I was surprised that (being a SE piece) the 44 came with the metal slide. The 51 comes with the plastic slide.

I've run all 3, the 51 is currently on the '01 Dyna...

[koko3052]

Strange.... my 51 has a an aluminum slide plus have a new spare in alum..

[FlaHeatWave]

Strange.... my 51 has a an aluminum slide plus have a new spare in alum..

Mine's > 10 years old, maybe they've changed before or since then??

[Admiral Akbar]

Strange.... my 51 has a an aluminum slide plus have a new spare in alum..

Mine's > 10 years old, maybe they've changed before or since then??

My 51 has a plastic slide..