85 vs 86 350x carb

[smokinp]

I was looking in the specs here on 3ww,it says for the 85 model 350x the carb size is 31mm and for the 86 it is 34mm...is this correct?

[smokinp]

anyone?

[kloby]

85 = 34mm round side
86 = i beleive it is 34 mm flat side :

[kb200x]

the carbs are the same. The 86 has an extra jet. Thats why the 86's start so easy. But the carbs are the same size.

[smokinp]

ok thanks...

[patblkwell]

Yeah I heard that the '86 and up carbs weren't as cold natured....that's why I put an '86 carb on my 350X..

[200x Basket]

how can i tell the difference? i have a 350x carb that i was going to put on my 300ex but i have no idea what year it is.
thanks
chris

[patblkwell]

The carb should have a serial # on it....that should tell you when it was made perhaps...I think you can look up and see which it is somewhere.

[knsmodels]

Easiest way to tell them apart is the pilot screws are different

Carb on right is the 86 design

[smokinp]

thanks for the pic KNS....

[kb200x]

i was just kidding about the 86's starting easier. I dont think it helped at all. I ride with OVhonda alot and he has a 85. I cant tell a difference in starting them. I think each trike has there own way they like to be kicked and once you figure out what they want its all good.

[Billy Golightly]

The service manual (Where the 3ww specs come from) is printed incorectly and shows that the carb is 31mm when it is infact a 34mm.

[Old 179]

Honda service manual : Id mark: 85 is QA05A and 86 is QA10A : 31mm both and same specs. Dirt Wheels test on the 86 ( Jan. 1986 issue) has it list as a 34mm.
ATV News had it listed as a 34 also.

[mike from long island]

so if they are almost the same. does that mean i can buy an 85 rebuild kit for my 86 carb. all the places i looked list them as 85 and not 86?? thanks sorry to ask on your thread.