updated torque specs under valve cover?
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Posting Guru
Joined: May 2013
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From: Oklahoma
updated torque specs under valve cover?
We have some great weather in Oklahoma right now, 70's for another day and then the freezing weather comes. I took the opportunity to pull the valve covers for a retorque since I have 5000 miles on the new injectors.
I was looking for the re-torque specs under the valve covers and found several different numbers.
Before I go further I wanted to cross reference the FTE brotherhood...
Are injector hold down bolts, 120 in-lb / 10 ft-lb?
I remember a cool graphic that had the number for the rockers as well as injectors, however that search turned up a post by Pocket saying 28-31 ft-lbs is the going spec for injectors.
Again, looking for a confirmation on the current numbers before I snap off some bolts.
If anyone has the cool photo listing the numbers, could you mind posting so i can add it to data packet of good info?
Thanks so much,
Jesse
I was looking for the re-torque specs under the valve covers and found several different numbers.
Before I go further I wanted to cross reference the FTE brotherhood...
Are injector hold down bolts, 120 in-lb / 10 ft-lb?
I remember a cool graphic that had the number for the rockers as well as injectors, however that search turned up a post by Pocket saying 28-31 ft-lbs is the going spec for injectors.
Again, looking for a confirmation on the current numbers before I snap off some bolts.
If anyone has the cool photo listing the numbers, could you mind posting so i can add it to data packet of good info?
Thanks so much,
Jesse
Post Fiend
Joined: May 2009
Posts: 5,470
Likes: 3
From: Pea Ridge, AR
Most go by the 120-130 inch/lb for the injector hold downs, and 20 foot/lbs for the rocker arm pedestals.
28-31 ft/lbs and you will definitely snap the bolts.
Here's the thread with the pics I bet you were looking for.
https://www.ford-trucks.com/forums/9...-cent-mod.html
28-31 ft/lbs and you will definitely snap the bolts.
Here's the thread with the pics I bet you were looking for.
https://www.ford-trucks.com/forums/9...-cent-mod.html
Hotshot
Joined: Mar 2014
Posts: 10,750
Likes: 1,065
From: Douglassville, PA
I'm guessing that new valve cover gaskets should be in hand when diving under the valve covers? How old or how many times would you go under there reusing the used gaskets?
Thanks,
Mark
Thanks,
Mark
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
I have a new number to consider: I can actually hear an injector when it's coming loose - and it can be seen on the OBDII port. The last time I had an injector come loose - the IPR was about 10% above normal, the sound was a bit "off" with a warm engine (it hides when the oil is cold), I got a little bucking, and the torque on the bolt had loosened to 75-80 inch-pounds. I know this number because I started with the torque wrench at 50 in/lbs and cranked it up until the bolt spun. I always start at 50 in/lbs when checking the bolts, because if that turns the bolt - the book says to pull the injector and redo the O-rings.
4 people have tried to keep the bolts down on Stinky's injectors, and nobody had success until I hot-torqued and thread-locked the bolts. I read a diesel magazine article suggest 140 in/lbs on the bolts, and they acknowledged the spec is 120. Seeing factory torque not work under pristine VCs, and having my injectors play Whack-A-Mole for 6 months, I am a big fan of hot-torqueing to 130 in/lbs.
4 people have tried to keep the bolts down on Stinky's injectors, and nobody had success until I hot-torqued and thread-locked the bolts. I read a diesel magazine article suggest 140 in/lbs on the bolts, and they acknowledged the spec is 120. Seeing factory torque not work under pristine VCs, and having my injectors play Whack-A-Mole for 6 months, I am a big fan of hot-torqueing to 130 in/lbs.
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Posting Guru
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From: Oklahoma
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Thread Starter
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Posting Guru
Joined: May 2013
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From: Oklahoma
Drivers side done. I stepped through the torque as to not apply it all at once. Drivers side valve cover is back on. I feel the need to go under the passenger side. Anyone have any tips for the passenger side valve cover on an excursion?
I've got the drivers side down to a science, but I've never been under the passengers side and it looks intimidating with the limited space.
Thanks!
I've got the drivers side down to a science, but I've never been under the passengers side and it looks intimidating with the limited space.
Thanks!
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Thread Starter
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Posting Guru
Joined: May 2013
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From: Oklahoma
I have those, I'll give it a go and see how far I get. These older 7.3's are tight, how sad you have to remove the cab to work on the new trucks. I wish I could do a front end pivot that would rotate the hood and fenders forward like a bus or semi...
Lead Driver
Joined: Jun 2004
Posts: 6,354
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From: Amarillo, TEXAS!
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
13mm flex socket: I'm buying two more because I wore out my first one on all the work I've done on Stinky. 1/4" drive deep 8mm socket is another great tool for the torque on #5 injector. Watch out for debris from the heater insulation - it can scrape into the head and cause issues. Get all of it out, if some falls in the head.
Beware of the MAP sensor mounting bolts, they snack on wrists, forearms, jacket sleeves - whatever you put in their mouth.
Beware of the MAP sensor mounting bolts, they snack on wrists, forearms, jacket sleeves - whatever you put in their mouth.
Postmaster
Joined: Dec 2010
Posts: 2,951
Likes: 4
From: Gary,Indiana
Most go by the 120-130 inch/lb for the injector hold downs, and 20 foot/lbs for the rocker arm pedestals.
28-31 ft/lbs and you will definitely snap the bolts.
Here's the thread with the pics I bet you were looking for.
https://www.ford-trucks.com/forums/9...-cent-mod.html
28-31 ft/lbs and you will definitely snap the bolts.
Here's the thread with the pics I bet you were looking for.
https://www.ford-trucks.com/forums/9...-cent-mod.html
Thanks for posting the old link!! I was trying to think when was the last time I was under my VC's and from the thread you posted it was 3 yrs ago. I have been planning on new glow plugs for awhile and now I need to do it sooner than later.I have a new number to consider: I can actually hear an injector when it's coming loose - and it can be seen on the OBDII port. The last time I had an injector come loose - the IPR was about 10% above normal, the sound was a bit "off" with a warm engine (it hides when the oil is cold), I got a little bucking, and the torque on the bolt had loosened to 75-80 inch-pounds. I know this number because I started with the torque wrench at 50 in/lbs and cranked it up until the bolt spun. I always start at 50 in/lbs when checking the bolts, because if that turns the bolt - the book says to pull the injector and redo the O-rings.
4 people have tried to keep the bolts down on Stinky's injectors, and nobody had success until I hot-torqued and thread-locked the bolts. I read a diesel magazine article suggest 140 in/lbs on the bolts, and they acknowledged the spec is 120. Seeing factory torque not work under pristine VCs, and having my injectors play Whack-A-Mole for 6 months, I am a big fan of hot-torqueing to 130 in/lbs.
4 people have tried to keep the bolts down on Stinky's injectors, and nobody had success until I hot-torqued and thread-locked the bolts. I read a diesel magazine article suggest 140 in/lbs on the bolts, and they acknowledged the spec is 120. Seeing factory torque not work under pristine VCs, and having my injectors play Whack-A-Mole for 6 months, I am a big fan of hot-torqueing to 130 in/lbs.
I don't have the book so this is very helpful info to me.
Thanks
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