Intake pushrods - to long!!!
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Intake pushrods - to long!!! - 11/21/2007 9:13:56 PM
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MontanaPanFan
Posts: 10
Joined: 9/19/2007
Status: offline
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Hello,
Very close to finishing the 61 pan, started to put the pushrods in the motor, the two exhaust, a bit tight, but able to get in, the two exhaust, no way. And yes, everything is bottomed out, and adjusted all the way down. I talked to a few bike shops, and they said it is not the first time this has happened , as they have seen this before. These are new S & S pushrods for a 61 panhead,
Suggested fixes are to cut the rods and reinsert the tips, also, to try to force the valve springs up.
The motor is in place, so not really practical to remove the covers and rocker blocks, that would bea nightmare now.
Ok, I await some old timers that have seen this before, and have the simple solution to this problem.
One tip is 1/8 - 3/16 to long.
I am also considering adjustabel pushrods, so I would have to sets of adjustments,
I have solid lifters with the adjustment in the tappet.
Ok,
Thanks in advance.
_____________________________
"Love the old pans"
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RE: Intake pushrods - to long!!! - 11/27/2007 12:03:08 PM
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crampfan
Posts: 150
Joined: 5/31/2007
Status: offline
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If the machine shop that did the valve work cut the valve seats too deep you will have some problems getting the pushrods in, also if this is the case, the rocker to valve stem geometry will be off, this will cause some rapid wear to the valve guides, and in some cases (if the stem highth is not = I have even seen some funny running issues.)
yeah, you can force the pushrods in, but rights right, and wrongs wrong.
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RE: Intake pushrods - to long!!! - 11/28/2007 1:34:19 PM
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crampfan
Posts: 150
Joined: 5/31/2007
Status: offline
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Hey now, that's really cool! I had steel seats installed in mine, and I have always worried about them dropping out.
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RE: Intake pushrods - to long!!! - 1/15/2008 11:07:33 AM
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sqdealgeorge
Posts: 280
Joined: 12/26/2007
Status: offline
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This can be quite normal I use a set of needle nose pliers put the pushrod in the head the cup part of the rocker put the bottom of the pushrod into the pliers say one inch up put the end of the pliers on the solid lifter cup using the pliers as a lever lift up this will open the valve in the head then you can usually slide the pushrod down the pliers into the lifter cup Might take some practice Go for it!!
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RE: Intake pushrods - to long!!! - 1/15/2008 10:16:41 PM
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panz4ever
Posts: 431
Joined: 10/20/2005
Status: offline
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Guess the question is if you ordered the correct pushrods. Belive the crrect one would be the 93-5029 ones. And yes, the pushrods should be different length w/ the longest going to the front pushrod
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RE: Intake pushrods - to long!!! - 1/16/2008 6:39:03 PM
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panz4ever
Posts: 431
Joined: 10/20/2005
Status: offline
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Hal...my bag man, Its the Jack that did it.
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RE: Intake pushrods - to long!!! - 1/17/2008 8:49:42 AM
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indianut
Posts: 46
Joined: 5/26/2006
Status: offline
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sunk valves
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RE: Intake pushrods - to long!!! - 2/3/2008 12:07:26 PM
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MontanaPanFan
Posts: 10
Joined: 9/19/2007
Status: offline
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Hello to all ,
I finally took the push rods to a machine shop, had 1/8th inch turned out on a lathe, and pressed the end back in the 1/8th inch, I tried to pull one tip, (HINT - do not do this!, just turn and remove the material with the end in place, and then press down until flush.
I checked with my friend who did the valves, said the valve heights and spring dimensions were correct.
So, I turned them and shortened them, and I am moving on, not exactly sure of the problem, and yes, there are many possibilities from wrong parts in the chain of parts, but I did have the correct push rods for a 61'
Now I have a magneto issue. Please se my new post on the magneto issue.
Again, thanks to all for comments and suggestions.
MPF
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RE: Intake pushrods - to long!!! - 4/6/2008 11:44:14 AM
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juaniosa
Posts: 60
Joined: 4/8/2007
Status: offline
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hello bros,
i have a problem 51 pan head pushrod adjustment anyone know how to.
need help thanks bros
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RE: Intake pushrods - to long!!! - 4/28/2008 4:57:49 PM
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doc308
Posts: 12
Joined: 3/18/2008
Status: offline
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What kind of problem are you having? Are you just looking for thr right adjustment specs?
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