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Message: <blockquote data-quote="kirkwilson" data-source="post: 13806" data-attributes="member: 625">Good advise- I bought a auction of used bolts on Ebay-I'll have to check and see if you can still get new ones- they are some of the most custom bolts I've ever seen- first you have a hex-head - attached to a flange like a washer- then there's a long part just straight no threads- then there is a forged in ring that sticks out about a mm- then about an inch of threads- then a pointed- yes- point on the end of the bolt.Per Honda you should set your valve clearance every 1000 miles- that means a lot of loostening and tightening- you would think these bolts would be harder but I can tell you they drill out like butter.... You can tell Honda is a quality machine, tho- there is s steel insert in the head for the bolt threads- there is probably enought material there to drill it out and rethread it in the steel insert if you need to- instead of getting into the aluminum head.</blockquote>