Home Forums Tech Talk Stock Honda Cr125 Cylinder and piston? Reply To: Stock Honda Cr125 Cylinder and piston?

#37397

Michael LaGrone
Participant

Your jetting will change depending on weather conditions, fuel and elevation.

That being said with out providing a lot more detail in terms of the conditions. I run a 99 stock moto with a dual pump around system and a 170 main will only work at high elevation and a HOT day. Chances are that your main is to lean. I run a 175/55 as my starting point. I have stuck my motor before and it has always been related to a lean condition. Fatten it up… start with a 178/55 or for a new top end break in try a 185/55 make sure to get it up to temprature before hitting it. a little on the hot side is better that cold. Bring the temp up to at least 140 degrees then run it at about 125-130 degrees.

look at this article

http://www.swedetechracing.com/tech_tips/tech_tips_cr125.html#Area%20break_in

Mike

#16 NCK Stock Moto