Valve clearance.

[BrianM]

Did a valve check. Used inch feeler gages but converted everything to mm. Can anyone verify my calculations?

 

Intake - .13 to .23

.127 with 5.50 shim, change to 5.45 (2 valves like this)

.178 with 5.44 shim, leave alone.

.127 with 4.45 shim, change to 5.40

 

Exhaust - .30 to .40

.014 with 5.27 shim, leave alone

.014 with 5.295 shim, leave alone

.013 with 5.23 shim, change to 5.20 - worth it?

.013 with 5.175 shim, change to 5.15 - worth it?

 

Thanks

 

[bobbybob]

Something looks wrong with your reported Exhaust valve measurements. MM or in. ?? Exh target range is .30-.40mm, you say they are at .014??

[BrianM]

Whoops, left the exhaust in inches.

 

 

Intake - .13 to .23

.127 with 5.50 shim, change to 5.45 (2 valves like this)

.178 with 5.44 shim, leave alone.

.127 with 4.45 shim, change to 5.40

 

Exhaust - .30 to .40

.356 with 5.27 shim, leave alone

.356 with 5.295 shim, leave alone

.330 with 5.23 shim, change to 5.20 - worth it?

.330 with 5.175 shim, change to 5.15 - worth it?

 

Thanks

[terryofperry]

Brian

 

Two valves were .127 with 5.50 shims and replaced with 5.45 shims to increase clearance by .05. I understand that.

 

One valve was .127 with 4.45 shim and replaced with 5.40 shim.

Am I reading it wrong or did that lower the clearance or did you mean replaced with 4.40?

 

Intake - .13 to .23

.127 with 5.50 shim, change to 5.45 (2 valves like this)

.178 with 5.44 shim, leave alone.

.127 with 4.45 shim, change to 5.40

 

Just trying to understand so I can do mine.

 

Thanks for posting by the way, I;m trying to learn.

 

Terry

[bobbybob]

After seeing how little (basically none) my valves changed from 6K to 16K miles, I wouldn't worry about the .33 exh clearance. Check them again at the end of the riding season....so easy to do. Bet they haven't changed a bit.

[BrianM]

Brian

 

Two valves were .127 with 5.50 shims and replaced with 5.45 shims to increase clearance by .05. I understand that.

 

One valve was .127 with 4.45 shim and replaced with 5.40 shim.

Am I reading it wrong or did that lower the clearance or did you mean replaced with 4.40?

 

Intake - .13 to .23

.127 with 5.50 shim, change to 5.45 (2 valves like this)

.178 with 5.44 shim, leave alone.

.127 with 4.45 shim, change to 5.40

 

Just trying to understand so I can do mine.

 

Thanks for posting by the way, I;m trying to learn.

 

Terry

 

The current shim is a 5.45 change to 5.40

 

Thanks

 

[terryofperry]

Thanks Brian, that makes sense.

 

Terry