Separate names with a comma.
Discussion in 'Thumpers' started by creeper, Oct 8, 2004.
Does this sound like bad clearance of valves to you guys?
Sound does not disappear on higher rpms.
i think it sounds more like bearing.
but check the valve clearance first anyway as its probably the simplest thing to do at this stage anyway.
then you might want to take the rocker cover off and inspect rocker arm bearings and other components while there
also does it sound the same when in gear and during riding ?
can you tell if the sound coming from the top of the engine or clutch side ? it could be cllutch too.
also post it to 640 Index thread, there will be more people looking at it.
and post more details about the bike what Year, how many KMs etc.
That sounds like something other than valve lash to me.
It's after rebuilt of broken cam chain, sprocket change etc.
can it be the cam chain slapping inside ?
have you checked the chain tensioner
Cam chain is tensioned and in place.
Just did my valves - mileage approaching 30k:
intake valves were a tight 5; exhaust were more than a loose 7 - probably 0.008 (dang I just realized I should have checked with the other end of the feeler gauge... dork). I adjusted the exhaust valves to at least a loose 7; really hate claiming I nailed the 6. I left the intakes at tight 5s. The bike fired up like it appreciated the attention - just my imagination or do slightly loose exhaust valves play that much of a role?
So I did mine the other day! Sad to say I didn't follow this guide and for sure I did it wrong! As I know have a very tappety engine. So that was 3hrs of my life wasted, owell practice makes perfect lol
Now iv read this guide hopefully I won't get it wrong.
Make sure engine is in the right TDC, piston can be at the top twice, but only at one place it is correct . To be sure you are in TDC Lock the cranshaft with cranshaft locking bolt or view trough the sign glass for the little mark on the flywheel, which indicates TDC. I never like the straw method, but what Ive mentioned always worked for me.