It's a shame that gets covered up

when I did my cam change this past winter I found myself double checking every step of the process because as simple is it is there are simple steps we can overlook such as cam clearance and matching timing marks. Also don't forget replace your front cam snap ring the right way!

 

Here's another video. You can see the tensioner jumping out when you hear the sound. Here are my questions so far, which I suppose may be answered by removing the cam plate (which I was hoping to avoid): Why is there a section of chain that causes the tensioner to move so much at each rotation? I just assumed the tensioner would hold a pretty steady state of pressure against the chain the whole way around. Why does this only seem to happen when the front intake pushrod is in place? Maybe the inner cam bearing is bad, causing the cam to rock up and down each time pressure is put on that lobe?

Any thoughts before I move forward taking the whole chest apart?

 

Does it happen to be clicking as the front lifter rolls over the high point of the lobe?

 

Yes, thanks... I was nervous about every one of those things! But I really believe I got them all right...

Although I can be very boneheaded at times, and here's proof... Check out the pizza I reheated for dinner tonight!



And if that wasn't bad enough, this was my second attempt, and I was standing right in front of the oven the whole time! And I wasn't drinking!!!

 

Please tell me you upgraded your cam bearings even if it's not the source of the noise it's great for piece of mind.

If you can see the timing mark on the front cam when it makes the noise take sharpie and make a line on the cam plate then remove everything and line up the mark when you remove camplate to see what position both cams are in that causes the noise it's really only one snap ring and three o rings if I remember

 

I'll look at that right now... I'm guessing the answer is yes, only because it seems to make sense... But I'm guessing.

 

Yes, all of the bearings are new/upgraded. I used the S&S installation kit, which had everything.

 

Chris, yes. Exactly.

 

Oy. Roller lifters, I assume. That makes wiped lobes unlikely. Possibly bad roller bearing. Hopefully the lifter bore isn't wallowed out. Fingers crossed.

 

Thanks. My fingers are crossed too... I have no idea how far I rode with it being a problem... At a certain point I started to be aware of some increased vibration (not that long ago, fortunately), but I first started chasing it through the normal Dyna channels... I checked engine alignment, I loosened up the exhaust and tightened it back up with the bike upright and running, I recentered the front Predator... I had also recently switched to the fully solid top mount and installed the rear Sputhe, both of which I thought may be contributing to an increase in noticeable engine vibration...

It wasn't until I had ruled out all of that that I looked to the engine itself. I guess I'll stop for the night. Fortunately Tuesday is my day off, so I'll start fresh in the morning.

The other bummer is that I have a dyno visit scheduled tomorrow! Oh well...