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  #11  
Old 8th January 2019
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That makes sense. But there is no warpage on the bottom of the box.
Unless it's flexing when bolted up.
What about the shaft elevation being out?
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  #12  
Old 8th January 2019
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Quote:
Originally Posted by Hippysmack View Post
That makes sense. But there is no warpage on the bottom of the box.
Unless it's flexing when bolted up.
What about the shaft elevation being out?
I think that would show excessive wear on the rocker arm shafts, themselves. But you'd be talking years of wear not hours.
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  #13  
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I inherited that condition when I bought the bike so I would expect it was years of wear.
But I just don't want to repeat it too fast if I can help it.
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  #14  
Old 9th January 2019
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The shafts slide into the rocker arm sleeves easily don't they? If not, maybe a slight hone on the rockers is due. As far as the shaft fitting into the head itself, as long as you don't have to excessively hammer them into place, you should be good. Heat and age can do all kinds of things to metal, I'd say your parts look really good for their age and mileage.
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  #15  
Old 9th January 2019
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Yes the shafts slide easily into the arm bushings.
I was just checking the fit in the rocker box for posterity when I realized the differences in the dims.

A good tapping brings them home but I have to line up the notch just right or it's very difficult to get the bolt in.

Pulling the shaft back out to realign the notch is easier than spinning the shaft in the rocker box bore.
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  #16  
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I used the Jims reamer to run through the loose side to square up the hole for reaming on the other.
A 12-point 12 mm socket was used as a finger hold to turn the reamer in by hand.
(turning slowly by hand to let the reamer do the cutting)


I continued until the reamer made it to the end and pushed it out.
Then cleaned the shavings and ran it back thru to make sure I had a uniform cut.



When done, the shaft slid into both ends evenly with no slack.
The smaller bore mic'd out to .555“ now which is the same as the other side.


At ambient temperature of 54°F, the shafts would not slide out on their own with the rocker box turned vertical.
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  #17  
Old 10th January 2019
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Nice to see such careful work. You said you will be fitting rocker lockers, so they should keep any spindle rotation in check.

What are your thoughts on roller rockers? I picked up a set of TPs cheap a while back but I'm not sure I will fit them unless the originals are worn.
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  #18  
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I've been hashing that over myself.
I haven't dove in deep on rollers yet.
But, S&S seems to be preferred.
They are forged and, according to aswracing, S&S is the only ones they haven't seen break.
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Could it be just a crushed/compressed alloy sort of thing where the rocker locker bolts would go in?
It could be an optical illusion , but the bolts holes look closer to the shafts at that point than the other end.
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  #20  
Old 10th January 2019
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Quote:
S&S seems to be preferred.
They are forged and, according to aswracing, S&S is the only ones they haven't seen break.
TP are also US forged but most importantly, they came to me for very little. I don't have radical cams, just thinking about means to reduce the valve train friction for longevity...........?
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