anyone have an idea as to why i have no bottom end on my raptor 660?. i have a trinity stage Iv exaust , open air box, EdelBrock carb 36x42mm. and droped down to a 12 tooth front sproket. when i first installed the exaust i couldnt keep the bike on the ground 1st,2nd,and 3rd. Now i have a hard time getting it up in 1st.? could it be the valves? i want to send it into the shop but would just like to get an idea as to what it could be before i send it in..

 

First thing I would do is a compression test. That will tell you where your at; even with the valves.

 

Things slowly go to smurf? I'd check valve clearance and compression.

 

deffinetly the valves when you press the gas in idel like puch it if it cuts out then its most likely the valves...you should get a power lid too gives it soo much more top end

 

definatly went smurf. rode like a bronco now more like a tamed pony. gonna break my heart but im gonna have to drop it off at the shop cant even tune bike by me any more with out cops breaking *****. thanks for your insite guys just like to know where im at. valve adjustment alot of work??? mechanic is 65$ an hour