Messages

1

Technical / Re: Engine pinging

« on: April 21, 2010, 02:37:05 PM »

I have a HGS exhaust system , which has a different type of fitting than the standard exhaust so no need for O-rings, I just use a silicon sealant instead so no problems there. I'll let you know how I get on after saturday.

2

Technical / Re: Engine pinging

« on: April 21, 2010, 12:17:28 AM »

Thanks for all the advice guys, I'll be taking a look at my bike this weekend

3

Technical / Engine pinging

« on: April 20, 2010, 01:51:39 PM »

Hi fellow 2 smokers, I recently bought a 2001 kx144 big bore. The bike runs fine, I just felt it could have more compression, and as I was unsure how long the piston had been in I decided on a top end rebuild.  It has a Wiseco piston that is in great condition with no score marks so I just changed the piston ring, small end bearing, gudgeon pin and circlips which all came from a Wiseco dealer and every part that I replaced was identical to the previous.
when I completed the rebuild I kicked the bike over and with the engine idling I can now hear what I can only describe as a metallic pinging coming from the engine that wasn't there before the rebuild. I'm thinking maybe the piston ring could be hitting the exhaust valve, this is all I can come up with !
any advice please ? I'm stuck !