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Have your valves ever needed adjustment?
- Thread starter docdoru
- Start date
irish2themax
New member
At 65 my valves needed adjustment YEARS ago!
BLACK WIDOW
New member
Valves
I think I know what you mean-:shemademe_smilie:---But on the bright side you still have valves to adjust
Michael
I think I know what you mean-:shemademe_smilie:---But on the bright side you still have valves to adjust
Michael
groundeffect
Registered User
I agree, a great question. I've rode 21,000km on an XT250 dual sport motorcycle and checked the valves every 6000km, and never needed an adjustment. However, the Spyder Rotax engine seems much much much much more complicated and has much more power then the 250, so it is good to hear it will take quite a few miles before an actual adjustment may be required on the Spyders.
Interesting thread.
Cheers, everyone.
WaltH
Senior Member
The shop manual indicates valve clearance specifications of .22 to .29mm for the exhaust valves. Does this mean your shims were very large, or am I missing something? I am not a motorcycle technician.
I'm wondering what you are saying here as well.
Usually Valve seat and valve face wear make clearance go tighter after a while.
groundeffect
Registered User
Hi Everyone.
I guess the specs for the intake valves are in the shop manual also...?
When checking my XT250 valves, I would just use a thickness gauge to be sure they are within specified range. If so, no adjustment required. Would it be the same procedure with the Spyder then?
I found the hardest part about checking my XT250's valves was getting panels off and getting to the exhaust/intake ports to do the check.
Is it difficult to get at the valves on the Spyder?
thank you.
I guess the specs for the intake valves are in the shop manual also...?
When checking my XT250 valves, I would just use a thickness gauge to be sure they are within specified range. If so, no adjustment required. Would it be the same procedure with the Spyder then?
I found the hardest part about checking my XT250's valves was getting panels off and getting to the exhaust/intake ports to do the check.
Is it difficult to get at the valves on the Spyder?
thank you.
docdoru
Doru the Destroyer-Spyder Photo Investigator
New Shim Size=Measured Clearance - Desired Clearance + Existing Shim Size :thumbup:
BLACK WIDOW
New member
I used to be an engine rebuilder- probably done 1000 in my 23 year mechanics career. Some of them even had shim under bucket systems so I am well familiar with the system.
Are you saying you had to use shims that ranged from 2.225mm to 4.625mm to get proper valve clearance?
That's a big variation. Were the factory shims that far apart in thickness?
Are you saying you had to use shims that ranged from 2.225mm to 4.625mm to get proper valve clearance?
That's a big variation. Were the factory shims that far apart in thickness?
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