Is this fixable (pic) ?

[teazer]

Are you sure they are CV carbs? I thought y were off a cb400F and that would make them slide (piston type) carbs.

 

[bitts]

Well im going by the ones listed on DCC website and compared them to the ones I pulled off my carbs:

http://www.dimecitycycles.com/vintage-cafe-racer-caferacer-bobber-brat-chopper-custom-motorcycle-carburetor-parts-keihin-cv-primary-main-jet-65-026-012.html

Not sure what piston type means, it doesnt look like the large ones

 

[teazer]

Those are regular slide carbs a.k.a. Piston types in some of the old Japanese manuals. Those are NOT CV carbs. I do not know if teh jest will also fit your carbs. I'd get a set from Sirius or your local dealer or jets R us.

 

[crazypj]

Should be fine, Dime City listed them for CV on 350.
They will also fit CB550F

 

[bitts]

Is this one correct ?

http://jetsrus.com/a_jets_by_carburetor_type/jets_keihin_99201-601_main_primary.html
Right carb p/n ?

I measured the length and o.d and they seem to be pretty dame close

So does anyone know the stock main jet size ?

 

[crazypj]

They are the ones, awfully small sizes though.
I think I have about 115 in my 550
BTW, there is a guy on SOHC 4.net who lazer welds the posts back together, you need the broken off piece though

 

[bitts]

Yea I have the broken piece, may just use the jb weld method, can't find the aluminum rod at HF.

And the jets I have are #75.

 

[bitts]

 

[crazypj]

Yea I have the broken piece, may just use the jb weld method, can't find the aluminum rod at HF.

And the jets I have are #75.

It's probably a zinc die cast, real easy to melt the entire thing into a blob
I think your going to need around 90~105, haven't done a 400 with pipe and K&N since about 1990