Got jets?

I'm going to be hacking on the bike soon, and I'm sure I'll need bigger jets. I'll be removing the stock exhaust and airbox and replacing that with a pod filter.

The bike in question is a 1980 Honda CM200T TwinStar. I cant seem to find out what model carb this even is and places like Bikebandit don't have the stock standard jets (out of stock.) Any idea as to the carb this is? I 'm sure its a Keihin. but don't know the model.

I found a bunch of different jets here, jets but without opening up the carb itself, I don't have a clue as to the configuration of the jet.

Why not open the carb up to see what jets they are? It should take 2 seconds is you have it off the bike.

You can go up a jet size with a drill index set. Just find the drill size that just fits and then take the next one and drill the jet out by twisting the drill bit with your fingers. Note that you can not go down a jet size, so don't go too big. And you need a true drill index set: Fractional, numbered, lettered.

Aren't those carbs like 25 bux brand new on ebay? I had to buy one that looked quite similar for my old XL70(that I've still never got running ).

Yup. New, but Chinese. People apparently are having mixed results. No matter, the carb on the bike works great. The pic is from the internet. I haven't taken the carb off, yet. Any idea were to look on it to see a model number?

It should be stamped into the flat spot on the side.

These guys might be able to help, they had jets for my crf230l for way cheaper than honda http://www.pjmotorsports.com/keihin-jets.html

You can also go down in size with a bit of solder and a jet or needle drill. Buy a set of them, and you can resize the jets to your hearts content.

As for identifying the carburetor, good luck. Unscrambling that information is all but impossible.

Regardless, disassemble the carburetor so you can learn what is there. Replacement parts themselves are relatively easy. It's identifying the specific application that becomes very murky.

Thanks guys. I'll do my best when time and courage allow.

I started responding a few hours ago, but my wife wanted to take me out for breakfast

Being Honda, it was/is probably used on another Honda. Don't be surprised to see the same carb (likely a Keihin PD-measure the inlet size to ID it) on a similar year/similar size quad, or XR200.

Don't waste your time drilling jets. They're cheap enough to buy, and sometimes not only the diameter, but the taper on either side is critical to flow. Some are even sized by flow and not hole diameter. When you pull the jet out, you'll see the shape, size and jet number on the side. It will be easy to find correct jets via the internet, or at your local bike shop. Go up 2 sizes at a time. Less than that will not make a noticeable difference, unless you're already way off.

In all likelihood, you'll only end up 2-4 sizes up, but sometimes after freeing up flow, the carb flows so much more air that it pulls more fuel, and a jet change is not required. Also, being a Honda, you may be able to find a budget bolt on alternative a few mm larger on the inlet side. That's usually a nice upgrade over stock.

I believe they used this carb on their 230(?) quad, so yeah, I should be able to find jets. Its possible Honda used a bigger carb on the 250 Rebel, which is kissing cousins to my bike.

Sudco or Carb Warehouse should be able to get you close on jetting. But just put it on if it came off a 4 stroke and its going on a 4 stroke it should be close enough to work long enough to get jetted closer.