Valve clearance Anyone know what the valve clearances should be for a big valve 1000s?

you check clearance cam shaft.if your cam shaft big clearance.you need fix clearance.the noised your engine or valve any particular of that clearance can be taken your car really ticking very noised mom?before your rally worn out.

There is a specific procedure for setting valve clearance . I highly recommend getting a repair manual for the correct specs & procedure. The engine must be at TDC with the #1 cylinder on the compression stroke , that will allow you to adjust ONLY certain valves , then you have to turn the engine one turn to TDC again only now #1 will be on the exhaust stroke & the rest of the valves can be adjusted . it's important that you know the difference between the two !

hey mate, have a look on google. just type valve clearance for your year make and model of bike.

Hi, Anonymous for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere $10 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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How to Check YZ250F Valve Clearances
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Yamaha XT250 Owner Manual

You may want to check valve clearance, sounds borderline. You should have 11/1000s on the exhaust valve.The exhaust is usually the culprit, since it runs hotter.

Adjust the jet valve clearance before the adjustment of the
intake valve clearance.
Jet valve clearance (hot engine)
[Standard value]. . . . . . . . . . . . . . . . . . . 0.25 mm (0.010 in.)

now adjust valve clearance
Valve clearance (hot engine) [Standard value]
Intake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.15 mm (0.006 in.)
Exhaust. . . . . . . . . . . . . . . . . . . . . . . . . . 0.25 mm (0.010 in.)

Hi there,

Not sure about clearance levels, but can tell you there is no English manual for the XJR 400 - only Japanese. Try the XJR owners club. It's full of troubleshooting questions answered in the forums.

Hope this helped

Danger :)

valve clearance for a 1994 yzf 750 is .11-.20 in. intake, and .21-.30 in. exhaust

when revving hard do flames come out when its valve bouncing??

other wise its way over fueling big time!!!

The big bore kit is pretty easy. It is actually pretty basic. If you are buying a complete kit it should come with a spec sheet that will give you clearances and so forth. Make sure you gap the rings. I believe the gap should be .002" per inch of bore. If you are running a super hi-lift cam then you will want to check the piston to valve clearance and also the check for valve spring coil bind.
Good luck and let me know if you have any further questions.
Regards,
RSelvy