ricmonro4
02-18-2015, 03:33 PM
Hey peeps,
Trying to figure out what's wrong with my bike.
Got an 83 250r that has a 310cc big bore kit on it. I got the bike like this.
THE BREAKDOWN:
I got it about 2 months ago. It turns on and runs superb in neutral, revs up nice and crisp and sounds nice and peppy. It has the big bore 310 kit, with a bigger, flatside carb, and looks like a custom built fatty exhaust. I took it out, the first time, to a dirt place and it ran good and strong but I felt like it wasn't all there in the top end. 1st and second gear rev up fine but when in 3rd it revs up but sounds like it's bogging out. Had to wait a couple of seconds on flat ground for 3rd gear to rev up. Same for 4th and 5th gear. So I thought maybe a nice carb clean and a new plug would fix it .
So I cleaned the carb and changed the plug to the common BR8ES NGK plug that is used in the regular 250r and everything sounded good. Didn't really ride it around and gun it since didn't have enough time to test it before our Glamis trip.
So I took it to glamis, and it did the same thing but now it was much more noticeable. The only way I could climb the medium size dunes was to make the motor scream, if I didn't it would bog out and lose power very quickly. Needless to say, it couldn't even go up the big dunes. My cousins were with me with there 250r atc's and they would climb these dunes like nothing. I figure since I have the same year and a big bore kit I would be able to smoke them but that didn't happen. Haha.
HELP PLEASE!! ANY advice would be greatly appreciated! !
I am thinking that carb is too big for that carb, or maybe not the right plug. Maybe the exhaust. My buddy is telling me to go back to the stock carb and fatty exhaust. I've seen in chat rooms that ppl still use the stock carb and exhaust on the 300 big bore kits.
Trying to figure out what's wrong with my bike.
Got an 83 250r that has a 310cc big bore kit on it. I got the bike like this.
THE BREAKDOWN:
I got it about 2 months ago. It turns on and runs superb in neutral, revs up nice and crisp and sounds nice and peppy. It has the big bore 310 kit, with a bigger, flatside carb, and looks like a custom built fatty exhaust. I took it out, the first time, to a dirt place and it ran good and strong but I felt like it wasn't all there in the top end. 1st and second gear rev up fine but when in 3rd it revs up but sounds like it's bogging out. Had to wait a couple of seconds on flat ground for 3rd gear to rev up. Same for 4th and 5th gear. So I thought maybe a nice carb clean and a new plug would fix it .
So I cleaned the carb and changed the plug to the common BR8ES NGK plug that is used in the regular 250r and everything sounded good. Didn't really ride it around and gun it since didn't have enough time to test it before our Glamis trip.
So I took it to glamis, and it did the same thing but now it was much more noticeable. The only way I could climb the medium size dunes was to make the motor scream, if I didn't it would bog out and lose power very quickly. Needless to say, it couldn't even go up the big dunes. My cousins were with me with there 250r atc's and they would climb these dunes like nothing. I figure since I have the same year and a big bore kit I would be able to smoke them but that didn't happen. Haha.
HELP PLEASE!! ANY advice would be greatly appreciated! !
I am thinking that carb is too big for that carb, or maybe not the right plug. Maybe the exhaust. My buddy is telling me to go back to the stock carb and fatty exhaust. I've seen in chat rooms that ppl still use the stock carb and exhaust on the 300 big bore kits.