www.zxrworld.co.uk

hi

since some times i have some noise from the head, a little cliking above 6000 rpm, and it disapear after....

the noise appear when hot

valve clearance ?? the timing chain is brand new.... about 1500 km

is this engine is usualy noisy ??

regards

Laurent

Could be the tappits
but then again i might be makin stuff up :S
im sure there will be a boff soon with the correct answer

if the cam chain is new, is the tensioner new aswell?

If the cam chain and tensioner are new id say its a valve clearance.

the tensioneris not new, it have 53000 km....
when i replace the chain, i had take a look at it, and it seem ok

i think about valve clearance, i'll check it tomorow when engine 'll be cold

what are the spec for ?

Laurent

This topic is your best friend

viewtopic.php?f=55&t=8002

One way of checking the tensioner is to see how far up the tensioner piston is, down by the pickup rotor, youll need to take the pickup casing off to set the cams to check clearances so you may as well check where the tensioner piston is first.

If its quite high up then your problem may be with the tensioner.

Have you listened to the engine to find out where exactly the noise is coming from?

the noise is from the head, appearing at 5500 rpm....

the tensioner piston is in low position.... chain tension is ok...

i have buy a head, i'll bring it to kawa workshop to rebuild this one, and i'll put it on my bike

then i'll rebuild my actual one

regards

Laurent

some news......

i have a stange noise when decelerating, i explain:

- it appear only when really hot
- the noise only appear when decelerate (static test, cannot be hear when drinving)
- the noise is 'quick' i mean the frequency is higher than engine rev
- the noise is difficult to hear, not really loud
- the bike run fine.... can take his top speed (235 on speedo with 120/70 font tyre) effortless
- the noise is like pinion teeths...

the timing chain is brand new, the guide have 53000 km, tentioner too (seem ok)

do you have experimented someting like this ??

Laurent

valve clearances?

viewtopic.php?f=117&t=8358

ok i'll continue on the planed way: replace the head by a fully rebuild one.....

but

zxr engine are noisy when in good health ?

regards

Laurent