180cc bbk carb size?

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Posted

My 180cc bbk swap is done. Should I stick with the rejetted 24mm carb or get something a bit larger?

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To get the most out of the build, I'd say the best move would be to get a larger carb. I saw great improvements moving to a larger carb on my 155cc build, I used a PWK 26 Nibbi slide carb and have not regretted it. I would like to try moving to a 28mm carb and see how the motor likes it. Dan has a new line of Mikuni carbs that should really bring these motors to life.

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Posted

To get the most out of the build, I'd say the best move would be to get a larger carb. I saw great improvements moving to a larger carb on my 155cc build, I used a PWK 26 Nibbi slide carb and have not regretted it. I would like to try moving to a 28mm carb and see how the motor likes it. Dan has a new line of Mikuni carbs that should really bring these motors to life.

I have a spare kleihim 28mm cvk. I'm trying not to get too much deeper in the hole. I just took off an Ecotrons EFI kit that I dropped almost $700 into, just to see it sit on my bench. I may step into a newer carb eventually but I haven't been able to get that crap sold or traded to save my life.

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The 28mm CVK should be fine with good jetting. I have always wanted to get into the whole ecotrons and fuel injection on a small scale engine, but time has not been my friend for the past few years so I only get time to barely put things together. Let us know how the new CVK works with the setup, post some pics.

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Posted

To get the most out of the build, I'd say the best move would be to get a larger carb. I saw great improvements moving to a larger carb on my 155cc build, I used a PWK 26 Nibbi slide carb and have not regretted it. I would like to try moving to a 28mm carb and see how the motor likes it. Dan has a new line of Mikuni carbs that should really bring these motors to life.

Im gunna roll with what this guy said. not  a whole lot to add.

Your 24 can be jetted to work just fine, but to compliment your build, you know what to do.

 

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Posted

My 180cc bbk swap is done. Should I stick with the rejetted 24mm carb or get something a bit larger?

It completely depends on the head... If it's a stock head, you don't need to do anything beyond re-jetting.

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It completely depends on the head... If it's a stock head, you don't need to do anything beyond re-jetting.

I did change the head, valves, and valve cover. I didnt measure the the valve size, but they appear to be larger. I also port polished the heads. Unfortunately my 24mm stock carb is not that seviceable. I was able to to get the bowl off but I'm not able to get the air/fuel screw adjusted because it doesn't exist..

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Posted

I did change the head, valves, and valve cover. I didnt measure the the valve size, but they appear to be larger. I also port polished the heads. Unfortunately my 24mm stock carb is not that seviceable. I was able to to get the bowl off but I'm not able to get the air/fuel screw adjusted because it doesn't exist..

It might just be capped off.jg60r9.gif

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Posted

drill baby drill:

M

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Posted

Good video MJ! I've done this very process about 30 times.... On a cheap GY6 carb, the block-off plate is super thin and very easy to remove... 

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