Hey I got a question for you guys. I have an 08 kx 450, I took the cams out to check the valves and noticed gouges where the intake cam rides on the the head. The gouges were in the cam cap and a couple of small lines on the head itself. So my question is could this cause my bike to have exesive noise coming from the top end? Cause when my bike is running it sounds like there is different noise coming from the top of the motor. I'll try to get a picture of it.

MrKiLLTER, on 12 March 2012 - 06:57 AM, said:

Regardless of the noise, you need to have that fixed. If the lines cannot be felt with your fingernail, ignore them.
Otherwise, new head time.

Have you ever cleaned the screen behind the flywheel of debris?

Yes I have, but i was unaware of if for quite a while. There was a lot of silicone in it. So just curious, could that cause louder noise? I have been chasing this noise and haven't found out what is causing it. Its really irratating.

Lots of different kinds of noises can come from lots of different places.
Assuming it's not a 'tick' or a 'knock' (usually pre-casistrophic noises), it's probably a stretched timing chain bouncing around..

When was the last rebuild........

Krannie, on 12 March 2012 - 01:44 PM, said:

Its not a ticking or knocking noise, its more of something rubbing where it shouldn't be. If you have it running and you stick your head to the left side of the motor you can tell that the sound is dominant on the top of the motor near the valve cover.  I just barely did a rebuild that consist of: new timing chain, cam chain tensioner, cam chain tensioner guide, new kawasaki piston/rings, and new exhaust cam. It has maybe 10 minutes on it since the rebild. But the noise was happening before the rebuild. That was the main reason for pulling everything apart in the first place.

Edited by MrKiLLTER, 13 March 2012 - 07:40 AM.

Krannie, on 12 March 2012 - 07:00 AM, said:

Ok so here is my next question. Where is the best and cheapest place to buy a head? I know its going to be pretty expensive, but where would be the best place?

http://www.lukesraci...cheadrepair.htm

http://fastheads.com/

http://www.lasleeve....igh-performance


Do a search for "4-stoke head repair"+" your city name"

I have a head. I started to polish the exhaust port and got lazy. it is my spare. I also started to replace the valve guides. was putting KW bronze, Unitl one of the tops chipped off. I can send you pics later. the head is clean. came off my spare motor.

Joe286, on 16 March 2012 - 12:27 AM, said:

Sweet man. So what all would I need to do to that head to get it up and going. I am very interested!

grab some valve guides. $50 for the kibble white ones.get them pressed in. i will even finish cleaning the head for you.the exhaust port, because I started and i would feel like shit leaving you to do it.