pushrod roller bearings ?
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Tourer
Joined: Apr 2012
Posts: 287
Likes: 1
From: Lincolnshire UK
pushrod roller bearings ?
ive been told that i have to replace my bearings what move on the pushrods to keep the tappets moving right and tight and was wondering how easy a job it is to do as been told its only a case of dropping the front engine mount and then you can take the rocker covers off then you can lift the pushrods and replace the bearings ??
thanks
MATT
thanks
MATT
Road Warrior
Joined: Oct 2008
Posts: 1,334
Likes: 17
From: Rosamond, Cali
Like Dawg said, and I paraphrase: WTF?!
On Twin Cams there's rollers that ride on the cams, on the end of the tappets. The pushrods fit into a cup on the other end of the tappets. The other end of the pushrod, in the head, fits into a cup in the rocker...
alan
On Twin Cams there's rollers that ride on the cams, on the end of the tappets. The pushrods fit into a cup on the other end of the tappets. The other end of the pushrod, in the head, fits into a cup in the rocker...
alan
Seasoned HDF Member
Joined: Nov 2010
Posts: 17,548
Likes: 7,175
From: Oxford, Nc
I think he's talking about upgrading to roller rockers. The "bearing" part roll on the rocker arms, ( the pivot point between the pushrod and the valve.) Stockers just use bushings.
Is that what you mean?
Is that what you mean?
Last edited by Stiggy; Jun 3, 2012 at 06:52 PM.
Thread Starter
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Tourer
Joined: Apr 2012
Posts: 287
Likes: 1
From: Lincolnshire UK
yes thats what i meant sorry as thats what they were called when i went to a local custom bike builder
apparently mine are wearing out causing the tappets to make a tapping noise louder than normal if they can be heard as normal running
apparently mine are wearing out causing the tappets to make a tapping noise louder than normal if they can be heard as normal running
Road Master
Joined: May 2006
Posts: 1,229
Likes: 20
From: Greater St Louis, MO
What kind of build do you have? A mildly built twin cam should not need rolling rockers. I would consider them on a radical cam or an evo due to them having more pushrod angle than a twin cam.
Seasoned HDF Member
Joined: Jun 2006
Posts: 28,524
Likes: 3,953
From: Vermont
Agree with above, if you have a stock engine or a mild build then you don't need roller rockers. The tolerances can be checked and you can shim the rockers or replace them with new.
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Road Master
Joined: May 2008
Posts: 762
Likes: 14
From: Bellevue, NE
The SE catalog also says that the rocker boxes on twin cams need to be clearanced if you go to the roller rockers.
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