6.0 Rocker arm/pushrod question - Ford Powerstroke Diesel Forum
LinkBack Thread Tools Display Modes
post #1 of 2 Old 02-24-2012, 01:21 PM Thread Starter
Powerstroke.org Rookie
Join Date: Apr 2011
Location: Macomb, MI
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
6.0 Rocker arm/pushrod question

I took my 2004 F350 in for service, and long story short, I had to replace two warped cylinder heads. I ordered "new" remaned heads from a company that will for now remain nameless, and after the Ford dealership installed them, two push rods were bent and the rocker arm cracked.

My problem is now it is another 2k+ for the teardown, and everyone is pointing fingers. The Dealer showed me on the dissasembled truck where the valves actually struck the top of the piston. Their claim is that when remilled, the machine shop did not properly raise the valves when they resurfaced the heads, thereby causing the damage. In turn, the machine shop said the rocker arm was overtighted and caused the damage. To me this does not sound possible? could an overtighted rocker arm force two valves into a piston?
mdrohan is offline  
Sponsored Links
post #2 of 2 Old 02-24-2012, 01:42 PM
Compression Ignition Addict
Join Date: Dec 2008
Location: port arthur texas
Posts: 4,222
Thanks: 1
Thanked 66 Times in 62 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
If the push rods were not actually seated in the lifter pockket and were instead against the block when tightened it would keep the respective valves partially open all the time.

When the cylinder came up to TDC the piston would indeed hit the valves, useually bending the valves, pushrods and damageing the piston to some degee.

I am afaid it is still assembler error. The few thousandsth that they can shave the head shouldn't allow the valve to protrude enough to hit the piston.

Lord I shall lead them to the water but I will not try to make them drink
dannyboy950 is offline  
Sponsored Links

6.0 , push rod , rocker , warped head

Quick Reply

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome