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New Technique or ? #88765
03/07/06 3:55 pm
03/07/06 3:55 pm
Joined: Apr 2005
Posts: 662
Arizona Territory
R
Riff_Raff Offline OP
BritBike Forum
Riff_Raff  Offline OP
BritBike Forum
R
Joined: Apr 2005
Posts: 662
Arizona Territory
Please bear with me here, but wanted to bounce this off the board.

Got a call last night from a young guy who just finished his 1st top-end rebuild. He hasn't done the wiring yet, but said that when he kicks it thru, he's hearing a metallic "chink" near the left-side exhaust. Told him that it sounds like an unseated pushrod & asked him how he had installed 'em.

Here's where it gets interesting: He & his friend (an experienced wrench) were doing the pushrods/rocker boxes together. A dab of grease on the bottom pushrod cups, located onto the tappets. Valve adjusters were backed off, then adjusters held back in the "up" position while installing the rocker boxes. The kid's on the right side of the bike, the friend is on the left side. They carefully lined up the rockers w/tops of pushrods, seated the rocker boxes. While the friend is holding the exhaust rocker box in place, the kid is holding his adjuster "up" while quickly installing the rocker box bolts & nuts. While he's doing this, he notices that his friend quickly flicked the left-side adjuster down & up twice in rapid succession ??????????

After installing the bolts & nuts, the kid turns the adjusters in to put slight pressure on the valve stems. He torqued the bolts & nuts to spec, his friend went home.

Next day, the kid adjusts the valves, buttons it up & has this "chinking" noise on the left side when kicking it thru.

I told him to tear it back down as far as the head, check the left exhaust pushrod for seating & to ask his "friend" (an experienced wrench, remember) where he learned the "adjuster flick method".

Your thoughts please, 'cause this is a new one on me. confused


"Factory Stock Is A Suggestion Only"
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Re: New Technique or ? #88766
03/07/06 5:04 pm
03/07/06 5:04 pm
Joined: Jul 2005
Posts: 1,919
new jersey usa
J
John RGS Offline
BritBike Forum member
John RGS  Offline
BritBike Forum member
J
Joined: Jul 2005
Posts: 1,919
new jersey usa
The "flicker method" is only used if you need to shave a few thou of the inside of the rocker boxes behind the pushrods. And only then if your using kicker side high spark rods.


,_o
_ -\_<,
(*)/'(*)

NOPGS #2
Re: New Technique or ? #88767
03/07/06 6:14 pm
03/07/06 6:14 pm
Joined: Oct 2003
Posts: 11,138
North Georgia, USA
RF Whatley Online content
BritBike Forum member
RF Whatley  Online Content
BritBike Forum member
Joined: Oct 2003
Posts: 11,138
North Georgia, USA
- The grease is an old trick.
- The follow-on trick is to rotate the engine until both push rods go down.
- Then you can install the rocker box without doing anything else (as long as you have the rocker box gasket that locates the push rods).


bigt


Don't hide 'em, Ride 'em !!

RF Whatley
Cornelia, GA

"Shop Boy" at Rodi British Bikes
Re: New Technique or ? #88768
03/07/06 7:10 pm
03/07/06 7:10 pm
Joined: Jun 2005
Posts: 624
Western Oregon
enigmaT120 Offline
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enigmaT120  Offline
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Joined: Jun 2005
Posts: 624
Western Oregon
When I first got my Triumph, (in 1987) the only gaskets I could get did not have those locating holes for the push rods. (They were also a poor material and leaked, but I didn't care about that.) I used to hate putting those covers on. I made a tool of stiff cardboard to try to hold the push rods in postition until I had the cover down, but it was still a pain. Now I can get a whole top end gasket set for 20 bucks and they're better quality than my old ones! Life is good.

Ed Miller
'70 Bonneville


Ed
1970 Bonneville
Re: New Technique or ? #88769
03/07/06 11:06 pm
03/07/06 11:06 pm
Joined: Apr 2005
Posts: 662
Arizona Territory
R
Riff_Raff Offline OP
BritBike Forum
Riff_Raff  Offline OP
BritBike Forum
R
Joined: Apr 2005
Posts: 662
Arizona Territory
Thanx guys...

I was trying not to load the question or jump to conclusions, but I think John might be thinking the same thing I'm thinking.

With these sections:

"While he's doing this, he notices that his friend quickly flicked the left-side adjuster down & up twice in rapid succession ??????????"

"Next day, the kid adjusts the valves, buttons it up & has this "chinking" noise on the left side when kicking it thru."

Any possible connection ?


"Factory Stock Is A Suggestion Only"

Moderated by  John Healy 


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