Well i must say that it's not so easy to find carburator that will be fine with honda cbr, also that cvk30 is only available on aliexpress, so i'm not sure about quality, any ideas on any specyfic carburator model that i available also in Europe ?

 

You could go with a new oem replacement

https://www.ebay.co.uk/itm/333661206...Bk9SR96EoI--ZA

 

Or, you could save the money for a bigger bike in the future - none of the options you have are cost effective vs simply buying a 250cc or 600cc in the future. Save your money and upgrade.

 

Hello again guys, i did some modifications, changed my cylinder to the bigger one from athena, and changed front gear from 15 to 16. Bike is a little more enterprising yet the change is not as great as i expected. I just made like 200km on this new setup, ah also changed air filter, from paper, to the KTM filter, after i make 300km i'm goin to change oil, use ceramizers.the needle on the speedometer, still revs jump at idle speed, i was expecting this comes from old piston, but that wasn't the case, well i tested max speed its about 115 km/h now, so not verry impressive

 

I'm going to keep updates in this thread, so if anyone is thinking about modding is jc34, here are my results. So now i ordered new exhausts, i'll if that will change anything, another mod i'm going to do is making 2 holes in the airbox. If that won't change anything i have to find carburator, still looking for that cv30.