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Valve Clearance clarification

  • Thread starter Thread starter chris032188
  • Start date Start date
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chris032188

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I just want to make sure that I am checking it with the lobe in the right spot because the manual has some grainy pictures. The lobe your checking is supposed to be perpendicular with the with the head correct?
 
And also how easy is the feeler gauge supposed to slide between them?
 
I just want to make sure that I am checking it with the lobe in the right spot because the manual has some grainy pictures. The lobe your checking is supposed to be perpendicular with the with the head correct?

Yes, and, ... well, NO. :-k

EDIT: I just went back and noticed that you have a 450. In that case, point the lobe away from the valve. The following information is for four-cylinder bikes.

If you look at the link that Uncamitzi posted, check out page 6. You position the cam so that one lobe is UP, the other lobe is FORWARD (for the exhaust valves). Both of the lobes on that side of the cam are at about 45 degrees from their respective valves, so neither one is pushing down. In that position, check BOTH valves.

If you start with Exhaust 1&2, you get both readings, turn the crank 1/2 turn (180 degrees), you will find that Intake 1&2 are in position. After checking them, turn the crank another half turn, you will find that EX 3&4 are in position. Check them, turn the crank a final 1/2 turn, you can check IN 3&4.

If the feeler slides in at all, it will go as far as you push it. Just be careful, the maximum clearance specified is 0.08mm or 0.003", which is only the thickness of a piece of paper. Feelers that thin will bend VERY easily. Creases in the feelers will give you erroneous readings, so if you crease one, replace it.


Be sure to take advantage of the offer in my sig.

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These valve cover gaskets are absolutely junk. Ordering my fifth one this summer haha
 
What cover gaskets are you using? I've been in and out of my top end probably a dozen times, and haven't had a need to replace a single one since the very first one I took off the bike.

The OEM gaskets are a little pricier, but definitely robust. Smear a little oil on them when installing so they won't stick to the engine.
 
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