2007 RK- 103 BB, woods cam tw6-6, big sucker2, Rinehart TD exhuast, jagg 10 row oil cooler, amsoil, Tmax w/AT. my basic map selection was done by bore, exhaust, intake size. I've tried setting from 12.5 to 13.5 AFR.

problem- when crusing at 50mph or less engine temp increase to 300'c before I shut bike off( usually in about 10-15 minutes).
traffic just makes it worst, if that possible.

at speeds 60-85mph engine seems to hold around 270'C.

i included some plug photos, about 4k miles on them, 1k after the cam change.

could this a timing problem, since engine ran cooler with original 255se cams(no where near as strong)?


[IMG]local://upfiles/34521/6A14C16C3D7B464D8414CB89B9148825.jpg[/IMG]

 

It looks as though you are running to lean, valves not seating or improper ignition timing. When I put my cams in the springs were bottoming out and had to go to different size springs. You might just need to have it dynoed to check your A/F mixture to make sure its correct. Good luck

 

Try having it re-tuned. Air Fuel mix looks to be off.

 

to lean or to rich? I can change my AFR.

-sheldon

 

Looks too rich - a lot of black. Strap should be a coffee (tan) color.

 

It seem rich butbe a hotter plug. https://www.hdforums.com/m_121377/tm.htm