[Darren]

Hi. I have recently finished my Neo 181 bbk and now running it in,but have checked and although correct have reset 3 times the valve clearance to 0.1 (0.004) and 0.17 (0.007) but still engine is very noisy ticking Away! Haven't gone flat out yet as running in but seams to be going fine, but is there a different valve clearance value used on a BBK and not the same as the standard 125?? (do have a couple more issues to ask but tackling them one at a time!) THANKS

 

[Darren]

Neo comes with its own cam. Have checked the timing and all good there. Maybe will have to take head off to check like u say the piston isn't hitting the valves. It does seam to go OK but haven't been above 7800 revs yet and don't want to destroy it if something is wrong. Only thing I have seen is that rocker arms are reused from original head which are fine. But when feeler gauge is in between on the exhaust valve u can see that it is tight in one place but a slight gap in another. Should I grind the tappet to fit dead flush (flat surface to flat surface.) Just would of thought that although not perfect contact on the two surfaces where they do touch is where the feeler guage was used and as such it should be opening and closing with the correct gap? Unless the neo 181 has different valve gaps?

 

[Darren]

Ok will run it some more. Enjoyed the building the engine bit but sorting out little issues, which I have more of, this site is invaluable for. Thanks for the help.Someone said that different cams can make it sound loud and ticking. Listen to a uk forum site vid on my issue and that bike sounded very simular,so could it be just that?

 

[Darren]

Cheers for all the advice. Had another bloke with same Neo 181 kit say that his sounds the same. So might be that they are just noisy and ticky things!