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R&R Cylinder Head with Tech Assist (Read 1534 times)
ThumperPaul
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Re: R&R Cylinder Head with Tech Assist
Reply #195 - 12/26/23 at 15:29:07
 
Rocker Arm Pads and Journals
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Journals_Rocker_Arm_Pads_2.jpeg
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Re: R&R Cylinder Head with Tech Assist
Reply #196 - 12/26/23 at 15:30:02
 
another view
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Re: R&R Cylinder Head with Tech Assist
Reply #197 - 12/26/23 at 15:31:22
 
more
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ThumperPaul
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Re: R&R Cylinder Head with Tech Assist
Reply #198 - 12/26/23 at 15:32:28
 
Camshaft
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Re: R&R Cylinder Head with Tech Assist
Reply #199 - 12/26/23 at 15:33:03
 
Camshaft 2
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ThumperPaul
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Re: R&R Cylinder Head with Tech Assist
Reply #200 - 12/26/23 at 15:34:41
 
Intake Valve Springs & Seats.
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ThumperPaul
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Re: R&R Cylinder Head with Tech Assist
Reply #201 - 12/26/23 at 15:35:17
 
Exhaust Valve Springs and Seats.
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ThumperPaul
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Re: R&R Cylinder Head with Tech Assist
Reply #202 - 12/26/23 at 15:42:03
 
Seeking assessments and observations.

Note: None of the head cover bolts identified as needing gaskets (washers) per Clymer had any washers.  Can I use normal M6 stainless steel washers from Ace Hardware upon reassembly?

Thanks.
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Dave
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Re: R&R Cylinder Head with Tech Assist
Reply #203 - 12/27/23 at 03:28:44
 
That is the first rocker with the hardened pad I have seen with noticeable wear on it - and it is the intake side!  

What does the top of the intake cam lobe look like?

I believe the rocker is likely usable - but I would use good oil and keep the idle speed up in the future.   (Waiting for DragBikeMIke' second opinion on the rocker).
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ThumperPaul
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Re: R&R Cylinder Head with Tech Assist
Reply #204 - 12/27/23 at 05:27:11
 
Thanks Dave.  I’m anxious to hear Mike’s assessment myself.  The photos really bring out and highlight the wear on the pad(s).  It’s  not really as noticeable to the touch or in person.  The pads aren’t excessively ground down (imo).

When you say “hardened pads” - are these stock or have they been reworked?

I will pull the cam today or tomorrow, and we can get a better look at it.  I am still thinking I want to install the web-cam 466 I bought from you.
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Gary_in_NJ
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Re: R&R Cylinder Head with Tech Assist
Reply #205 - 12/27/23 at 08:47:11
 
The journal in post 197 is showing signs of failure. How does it feel when you drag your finger nail on it? Does it catch? If you drag some 00 steel wool on it, does it grab the steel wool?
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ThumperPaul
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Re: R&R Cylinder Head with Tech Assist
Reply #206 - 12/27/23 at 09:58:34
 
Thanks Gary.  It’s not raised or snatchy and fine steel wool rides right over it.  Photos seem to do a good job of accentuating blemishes.  It’s probably ok for now if I keep fresh Rotella T4 15w/40 running in the bike.  But I definitely defer to you gurus!!
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DragBikeMike
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Re: R&R Cylinder Head with Tech Assist
Reply #207 - 12/27/23 at 11:30:12
 
Wow!  You made some good progress Paul.  Now that the head cover is off, you can rotate the engine without fear of damaging anything.  Go ahead and rotate the engine and take good pictures of the nose of each cam lobe.  As mentioned by Dave, you have some scoring on your rocker arm pads so we need to see the cam lobes.

You also have a very unusual pattern or mark on the exhaust rocker pad.  It's not scoring but some sort of discoloration.  Try and get some closeup pictures of that area and post.  See if it has an edge that would indicate some sort of buildup or depression.  Try and snag it with your fingernail.
All three of your pictures show the area so it's not a shadow or reflection, there is something there.  It might not be a concern, it's unusual though.

I am embarrassed to report that I gave you some bum dope in the early replies to this project.  I identified your left-hand cam lobe as the exhaust lobe.  My bad.  The left-hand lobe is the intake lobe.  A totally rudimentary observation that I totally screwed up.  I corrected the posts and I apologize for the misinformation.

This is the unusual pattern I see on your exhaust rocker pad.
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Exhaust_Rkr_Pad_Unusual_Pattern.jpg

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DragBikeMike
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Re: R&R Cylinder Head with Tech Assist
Reply #208 - 12/27/23 at 11:31:46
 
Here is another shot from a slightly different angle.  See the funny pattern.  How does it feel when you run your fingernail across the edges of the pattern?
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Exh_Rkr_Pad_Unusual_Surface.jpg

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DragBikeMike
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Re: R&R Cylinder Head with Tech Assist
Reply #209 - 12/27/23 at 11:35:55
 
Another excerpt from one of your pictures.  Again, the funny pattern is clearly visible.  It's almost as if there is some sort of different material fused into the hardened pad.

The upper half of your right-hand cam bearing looks great.
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Exh_Rkr_Unusual_Pattern.jpg

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