How to become a member of the new elite group known as the "Knockers Club"

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dan filipi

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My Bike Models
1983 Interstate
2018 KLR 650
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I'm having a rank image made which I will be tagging all members with the illusive "Knock", myself included.

There are some that may call themselves knockers but they are unsure. They can only guess what it actually is because they haven't experienced it.
The "knock" has been a tricky little sucker to locate and has perplexed many members for years!

My tagging of members will be done behind the scenes, no announcements will be made.

Your new badge may appear below your avatar in the sidebar, or it may mysteriously appear in your signature so keep on the lookout for it.

Will you be proud to be a member of this club?
I'm not sure about that.
 
Damit....you sucked me in with the title....not exactly what I was expecting.....son-of-a-b.... :sensored:

:smilie_happy: :mrgreen: :ahem:
 
macka":2zj9krun said:
The wrist pin in cylinder heads can mimic the noise made by the valve train especially under load https://www.youtube.com/watch?v=mVgqHai2qJE this is a more pronounced noise but it gives you an idea.

That's much like how mine sounds but I tried pulling a plug wire like that which made no difference.
I guess that doesn't mean it still aint the wrist pin necessarily.
 
Very interesting video. My '81 engine did sound like that when I would throttle up from idle just like he did. I did not ever pull one plug wire at a time back then. I would venture to say that one of the knocks I had did sound like that. If you look back at my oil pressure drop video, it is a very similar sounding knock and it happens with no load on the engine. But, my knock also would show up under load (or maybe it was just the right RPM?)
 
macka":35xja9w5 said:
The wrist pin in cylinder heads can mimic the noise made by the valve train especially under load https://www.youtube.com/watch?v=mVgqHai2qJE this is a more pronounced noise but it gives you an idea.


A bad rod bearing will offer the same results when removing the plug wire, as could a cracked piston skirt. It is a good way to determine which cylinder is the culprit, regardless of the actual problem. :mrgreen:
 
Hey Dan, just found this new idea come to reality in the forum, hope since I had something to do with this line of thought I could become a charter member of this new distinctive group, but, to be honest, I'd really rather be without the mystery knock than be a member of the "knockers club" ..... see my new post about bearings .... and the search goes on .... Crowe
 
AApple":11u71usb said:
macka":11u71usb said:
The wrist pin in cylinder heads can mimic the noise made by the valve train especially under load https://www.youtube.com/watch?v=mVgqHai2qJE this is a more pronounced noise but it gives you an idea.


A bad rod bearing will offer the same results when removing the plug wire, as could a cracked piston skirt. It is a good way to determine which cylinder is the culprit, regardless of the actual problem. :mrgreen:

Hey Thanks for expanding my knowledge. I didn't know about the piston skirt
 

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