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#980291 Edge51 (User) 2000 Roadstar Platinum Boarder Posts: 5447 Re:Engine knock 1 Year, 7 Months ago   Edge51 wrote: Very Interesting ..................   Logged       The administrator has disabled public write access. #980293 Warden (Moderator) Moderator Posts: 9535 Re:Engine knock 1 Year, 7 Months ago   Here's the only damage. Should be ok. I'm glad I shut it down immediately and not tried to limp it home. It looks like a set screw. Flattened. Lol Reassembling now. Stay tuned.   Logged       The administrator has disabled public write access. #980294 txulrich (User) Platinum Boarder Posts: 2768 Re:Engine knock 1 Year, 7 Months ago   Very lucky if that's the only damage. The next questions is, if it is a set screw, where did it come from?   Logged     Peace, Baron Wilhelm Gustav von Schmidtt III (but you can call me Joe)   The administrator has disabled public write access. #980295 JimH (User) No matter where you ride,there you are! Platinum Boarder Posts: 3169 Re:Engine knock 1 Year, 7 Months ago   I vote for spark plug electrode,i cant imagine anything that size passing through carb jets. I guess the PO could have dropped a screw in the exhaust port during a pipe change and it might possibly have been wedged in there somewhere all this time,until it finally "unwedged itself"...probably during a high rpm rev...you know,one of those 8 or 10,000 rpm'ers   Logged       The administrator has disabled public write access. #980298 Flashback (Moderator) Just the facts, Ma'am.. Moderator Posts: 10749 Re:Engine knock 1 Year, 7 Months ago   In the past a member bolted up a k/n filter on a fabbed up mount. didn't use loc nuts and had a bolt come loose and make it to the cylinder...........   Logged       The administrator has disabled public write access. #980301 Littlebull (User) Junior Boarder Posts: 124 Re:Engine knock 1 Year, 7 Months ago   Warden, I'm sure you will have already done it but in case make sure you polish off any of the raised areas on the head and piston caused by the contact. These could heat up under compression and cause detonation. Good luck and Ride on, Mike.   Logged     The administrator has disabled public write access. #980304 Assocracer (User) Platinum Boarder Posts: 1227 Re:Engine knock 1 Year, 7 Months ago   Was this on the bike that you are planning on taking out west?   Logged       The administrator has disabled public write access. #980306 Doc_V (User) Platinum Boarder Posts: 6530 Re:Engine knock 1 Year, 7 Months ago   I can tell you this much, it didn't look like that before it entered the combustion chamber... You can clearly see the threads and when it came in contact with the top of the piston, it was flattened. And the fact that one end is splayed out, tells me one of two things: It's either a sheered of screw tip or... and I'm leaning this way because of how bad it's splayed... an air bleed jet. Are you running a Hyper Charger by any chance?   Logged     Last Edit: 2016/07/27 11:08 By Doc_V.   It\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'s been lots of fun guys... Thank you Gram and catch you all on the other site.   The administrator has disabled public write access. #980312 Warden (Moderator) Moderator Posts: 9535 Re:Engine knock 1 Year, 7 Months ago   Yes, cleaned up the gouge. Yes, this is the bike I intend to ride west on. No hypercharger. Ok, reassembled with no issues. Just went on a ten mile ride, quiet as ever now. Will do an oil change and call it done. Still, no idea what or how that got in there, but I'm glad it only cost me wrench time. Btw, did I earn my engine wings now? First time I've gone that far into the engine.   Logged       The administrator has disabled public write access. #980313 Arps (User) Platinum Boarder Posts: 4415 Re:Engine knock 1 Year, 7 Months ago   Thats awesome that it runs like a top. These things are unbelievable.   Logged     The administrator has disabled public write access.

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