How can i tell if i have a stock carb?

[300ridr]

the title says it all, i want a 400 carb but dont want to find out that i already had one and wasted my money. also, how can i tell if the rest of my motor is stock? take it to a honda shop? like i said, i dont want to buy a cam and carb and realize i already had them. i know i didnt put them on, but the joker before me may have.

[Atlanta]

The 400 carb will require the intake to be stretched over the intake of the carb.

it is much tighter then stock.

Cam,open it up and take a look.


Really no way of knowing whats done unless you look yourself.

I bought a H22a dohc from Japan for my accord only to find out the motor had a ton of work done to it.

I thought I picked up a stock motor and it was a stroked 2.2 to a 2.49 with 12.5-1 domes in it and a sleeved black with billet rods,complete 3200 june stroker kit.

I paid $1500 for it as a stock motor,but other times I have bought something that was built only to find out they lied through there teeth.

Hope this helps.

[300ridr]

i was just messin around one day and took the carb off, but the boot came off and on fairly easy, so im assuming i have a stock carb. but what about like head porting, or big bore, how do i tell that stuff, take it off and measure?

[Atlanta]

You can take the head pipe off and look,also the microthermomature maybe the tool of choice to inspect,that or a boratascope.

Hope this helps.

[QuadCobbler]

This is a 400ex carb you can see the 2 breather tubes

[QuadCobbler]

This is a 300ex carb, you can see it dose not have the 2 breather tubes tied together. Just one and the over flow on the bottom which they both have. you can always mesure the opening of the carb. A 300ex is like 32mm and a 400ex is like 37

[300ridr]

which side do i measure though?

[QuadCobbler]

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