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Well I have narrowed down all my options. I had to get pod filters for my bike because the original intake boots had holes in them. And then I found some nice big holes in the mufflers as well so I had to put on more open aftermarket ones. Now I have been working on the jetting for the past while and I have discovered that I can't get new pilot jets for the stock carbs. So I have to get new ones. What should I pick people? Give me so ideas for carbs that would still be manageable on the street but give me much improved throttle response, toque and power. I see that most people run vm20s. But maybe give me some other unique ideas.
Here is my bike to look at as well.
Poke texasstar , he has recent experience with the 200 . . Pat and Zeke are great people I'm sure you'll enjoy the conversation even if your carbs remain fubar
I was mostly just trying to be unique and have some fun. It looks like I am ordering vm20s now anybody know if they can come in left and right hand models so I don't have to reach between them to adjust the idle and mixture screws.
Also I will be running with pods and a more open aftermarket muffler so any ideas on what the jetting should be. What did you guys wind up running with?
Poke texasstar , he has recent experience with the 200 . . Pat and Zeke are great people I'm sure you'll enjoy the conversation even if your carbs remain fubar
just saw this! We are running stock 18mm carbs, cb750 velocity stacks from the inside of an air box...(I think you can buy them new) with a Uni filter oiled and slid over top... open scrambler exhaust with the 100 jets. It runs great! We just added 8mm Taylor racing wires and she cruises up to 75 with 215 lbs of giggling on her back! Oh how she needs a sixth gear!
Thanks for the info Texasstar. So I bought some vm20s but I ran into a little problem. No matter how I mount them the holes don't line up for the air flow. Is there a trick to mounting them? Everything I have tried still leaves me with a lip in the path of the air flow. To get it to line up did you guys drill out the mounting holes on the carb flange? That's the only way I can see to do it with out getting a new intake made for it. So what did you guys do and does it impact airflow if the carb and the intake are offset from each other?
Thanks for the info Texasstar. So I bought some vm20s but I ran into a little problem. No matter how I mount them the holes don't line up for the air flow.Is there a trick to mounting them? Everything I have tried still leaves me with a lip in the path of the air flow. To get it to line up did you guys drill out the mounting holes on the carb flange? That's the only way I can see to do it with out getting a new intake made for it. So what did you guys do and does it impact airflow if the carb and the intake are offset from each other?
Mount just your stubs to your intake and see if they are ported correctly...Even with our stock carbs, synthetic stubs, they were not ported correctly to the intakes from the factory and dont line up perfectly. When you look into the stubs it looks like aluminum on both sides joined with a black synthetic ring. We have not ported our stub so be careful! It looks doable with a dremel but I would not get into the black band.
You can read about the synthetic mounting stub and why honda made a "live mount" on our cb200
http://www.motorcyclespecs.co.za/model/Honda/honda_cb200.htm
The cb175 had aluminum stubs and 20 mm keihins....this is a picture I took yesterday.
I am going to post some pictures here so I can better describe the situation it looking like not matter what I do I will need to get new intakes machined. Here is the stock porting to the engine.
This is how it matches up to a vm20 with the intake in the stock position. This is with the porting lined up. Which means the bolts are out of alignment. Should I just gring out the metal on the carb so it can be bolted together or would that be a bad idea? There would not be a whole lot of metal left to hold the carb to the intake then.
Mounted to the bike it looks like this but it also has a huge overlap on the porting if I mount it like this with everything as it is stock. So what should I do? New intakes or grind out the holes on the vm20s so the ports match up?
I think that might work if I cut that metal away but I have concerns about structural strength if I do that. Here is a pic of the carb with pencil marks on where I would have to cut it back. They are hard to see though. What do you think should I take it into a shop and ask them about it. Or should I just do it and get my bike running? I bet it could work with a big washer but I don't really have enough experience to know for sure.
Sorry this site is giving me problems. I can't get the pic to post. But I put pencil marks on where you had the pink. I was just concerned about it cutting through too much metal on the carb and weakening it to the point where it would fail because removing that material removes the thickest part of the metal on that flange.
I feel like that could work. I don't know if I should cut into the intake though because if that broke it would be almost impossible to get a new one. But thank you for the idea.
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