Rocker Arm Mounts
Postmaster
Joined: Apr 2012
Posts: 2,613
Likes: 8
From: North Georgia
On the pic of the pushrod end...
Are those 'nicks' i see... or reflections?
Those little diddys what look like little lines intented kinda make me a wee bit nervous.
I would venture to guess they are from slivers of piston rings. That is if im not just seeing some optical illusion... with your compression #s this theory is further supported.
I agree that a look at the underneathy parts of the heads are definitely in order, but as I have said time and time again... I would not pull the heads unless the motor is on a stand... safely out of the truck.
Fortunately... also due to the compression #s... at worst i e'spek yer lookin at a rering kit and a valve lapping. If a couple holes are chewed up... a couple sleeves set in shouldn't be all that bad at a scrupulous machine shop.
Are those 'nicks' i see... or reflections?
Those little diddys what look like little lines intented kinda make me a wee bit nervous.
I would venture to guess they are from slivers of piston rings. That is if im not just seeing some optical illusion... with your compression #s this theory is further supported.
I agree that a look at the underneathy parts of the heads are definitely in order, but as I have said time and time again... I would not pull the heads unless the motor is on a stand... safely out of the truck.
Fortunately... also due to the compression #s... at worst i e'spek yer lookin at a rering kit and a valve lapping. If a couple holes are chewed up... a couple sleeves set in shouldn't be all that bad at a scrupulous machine shop.
Fleet Mechanic
Joined: Nov 2005
Posts: 1,508
Likes: 87
From: North Carolina, Raleigh
that the problem with cell phone cameras.. they suck for close up work.
I remember reading somewhere about re-torquing the rocker arm hold down parts? some say it helps to quiet the rattle a bit..
any truth to that.??
I remember reading somewhere about re-torquing the rocker arm hold down parts? some say it helps to quiet the rattle a bit..
any truth to that.??
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Laughing Gas
Joined: Jul 2008
Posts: 772
Likes: 27
From: Brighton CO.
Christof13T.,
I'm not sure why it looks like it does. I do not feel anything necks on the ends of the push rods. But, I'm wondering if the the rocker arm wear might be from the low pressure oil pump not supply oil pressure quick enough? Trying to justify why the rub marks.
I'm not sure why it looks like it does. I do not feel anything necks on the ends of the push rods. But, I'm wondering if the the rocker arm wear might be from the low pressure oil pump not supply oil pressure quick enough? Trying to justify why the rub marks.
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
My rocker arms have wear - but I have a lot of miles. The copper coating on the end of my pushrods is long gone, I replaced a couple of them as an experiment on #7 - no change. I suspect the copper coating is to reduce wear, because it's such a soft metal.
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