Quote:
Originally Posted by Dave-the-rave
Your valves will be fine as long as it's put back together right.
The 172 and 178 are factory shims it's not a problem. You can only buy shims in 005 as you have noticed. Seems you measured your gaps in Imperial which isn't helpful so I've converted them as best I can.
Front Cylinder
Intake - [.004] 0.102
[.0035] 0.089
Exhaust-[.007] 0.178
[.007] 0.178
Rear Cylinder
Intake- [.0025-.003] 0.069
[.0025-.003] 0.069
Exhaust [.007] 0.178
[.007] 0.178
So by my calculations all your valves are tight except one intake which is right at the edge. Now I'm not too happy about measuring a metric bike in imperial then converting to metric. Not with feeler gauges and such small values. Here's your options....
Trust the conversion will work ok, calculate which shims you need using the chart and get the rear cylinder buttoned up, before moving on to the front. OR
Assemble the rear cylinder, timed correctly and re measure both cylinder valves using metric feeler gauges.
If you go with the first option I cant tell you which new shims you need because I don't know what shims were in there. The chart on the second page of this thread shows you how to calculate. Basically all your valves are tight so you need to go down in shim sizes. That makes for a bigger gap. If in doubt let us know what shim size corresponds to each of the above measurements.
Don't be disheartened. You'll get there.
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I originally measured the gaps in imperial but ive measured them again the other day in metric and here are the measurements
Front Cylinder
Intake - Both are 0.102
Exhaust - One was 0.178 and the other 0.152
For both the intakes i had 178 shims in there and for both exhaust i had 175 shims
Rear Cylinder
Intake - Both are 0.063
Exhaust - Both are 0.178
For the intake i had one shim at 172 and the other 175 and for the exhaust i had one shim at 170 and the other 172