Notices
Pre-Power Stroke Diesel (7.3L IDI & 6.9L) Diesel Topics Only

Sudden Overheating and Back Pressure Through Overflow Tank

Thread Tools
 
Search this Thread
 
Old Dec 2, 2010 | 09:28 PM
  #31  
Dave Sponaugle's Avatar
Dave Sponaugle
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
Club FTE Silver Member

When you get the 7.3 rocker, they look completely different.

Not to worry, the are direct bolt on replacements and much stronger than the 6.9 style.

If you do any cleaning, on the injectors be very careful of the pintle sticking out of the nozzle end of the injector.
even the slightest bend in it and the injector will not work.

3/4" copper fitting brush used with care and a bit of brake cleaner spray down each injector bore cleans out the carbon in the heads, BUT be very careful you don't go hog wild and damage the injector seat surface at the bottom of the bore with the wire sticking out of the end of the brush.

Make sure there is no oil on the block deck or the head surface when you install the head gaskets.

Studs at the rear of the passenger side head will not be any fun with the engine in the truck.

Make sure you follow ARP's torquing directions.

Run down to torque in steps and in sequence four times, remove them four times, again in steps and sequence before the final install.

Yes it makes a big difference in how they torque down, I picked up about 1 full turn more on the last install of the nuts.

Be very sparing with the moly assembly lube on the studs and nuts, you don't want to contaminate the head gaskets.
 
Reply
Old Dec 2, 2010 | 10:08 PM
  #32  
ihateminimumwage's Avatar
ihateminimumwage
Thread Starter
|
Posting Guru
Joined: Oct 2005
Posts: 2,282
Likes: 4
From: Oregon
ARP must be getting lazy on the install info, since all the sheet says is to torque down in three steps to 80ft lbs, and after reading around here about it, that's nowhere near right...

I'm not looking forward to torquing down the heads with the motor in the truck, but don't really have a choice as far as my situation goes. So it's torque it down to ??ft lbs in 4 steps, then back the nuts off at the same rate, and then do it all over again?

Thanks for all the additional info Dave.
 
Reply
Old Dec 2, 2010 | 10:24 PM
  #33  
Dave Sponaugle's Avatar
Dave Sponaugle
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
Club FTE Silver Member

When I built mine I had the engine out.

Install studs
Clean block deck with acetone
Clean head surface with acetone
Drop on head gasket
Drop on head
Very light swipe of assembly lube across stud threads with finger
Torque down in sequence and four steps 65, 85, 100, 110

Then reverse procedure and remove

Repeat three more times at a minimum, I did four.

Final install.

Yes, I used a modified 93 7.3 turbo torque spec on my head studs, but I was planning on a little extreme boost pressure.

For what it is worth, when I bougth my head studs, they had three grades.

180,000 PSI
200,000 PSI
220,000 PSI

Yes I bought the highest grade, about 3 bills if I remember right.

Never did figure out why my arm was sore the next day.
 
Reply
Old Dec 3, 2010 | 12:00 AM
  #34  
87crewdually's Avatar
87crewdually
Lead Driver
15 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2006
Posts: 6,496
Likes: 94
From: So. Jersey
With the side cover off the HVAC you'll have plenty of room on the passengerside. I installed the head first then screwed the studs in by hand, DO NOT tighten them. Like Dave said on the steps ending up at 110ftlbs.
Here's a pic with the cover removed showing all the room you'll have. Also here's the sequence, just modify the values.



 
Reply
Old Dec 3, 2010 | 02:18 AM
  #35  
ihateminimumwage's Avatar
ihateminimumwage
Thread Starter
|
Posting Guru
Joined: Oct 2005
Posts: 2,282
Likes: 4
From: Oregon
Holy S***! Four times? I was already not looking forward to it, but damn...
After the money and time being dropped into this, not pulling any shortcuts. At least I know what I'll be up to in the next couple of days.

87crewdually: Thanks for the info, I'll definitely be pulling that off.
 
Reply
Old Dec 7, 2010 | 03:56 PM
  #36  
ihateminimumwage's Avatar
ihateminimumwage
Thread Starter
|
Posting Guru
Joined: Oct 2005
Posts: 2,282
Likes: 4
From: Oregon
Heads are finally all torqued down, rain stopped progress for a bit.
If my math is correct, it's 512 clicks of a torque wrench per head, including the final 2nd run of 110lbs at the end...

So 1024+ clicks down, plus two sore arms, and lower ribs from leaning over the radiator. Fun times.

And for anyone planning on doing this in the future, pull the underhood heater cover first. It would've made installing the head 100x easier, and it needed to be pulled anyway to torque it down.
 
Reply
Old Dec 8, 2010 | 07:28 PM
  #37  
treeclimber101's Avatar
treeclimber101
New User
Joined: Dec 2010
Posts: 11
Likes: 0
Talking

Heres a thought for a leaky head gasket last summer I noticed the return bottle was completely empty , checked the radiator on both took almost 2 gallons , filled both and noticed that there were air bubbles in the return bottle real bad , within 2 days the truck was empty again , no visible leaks and furthermore there was straight water dripping from the exhaust with no mixing or overheating or high oil level , the only thing that i could think is water straight into cylinder, so I got 2quarts of blue devil and almost 2k miles later the truck still holds water and the leaky head gasket appears to be fixed ...I have visited the Blue devil website and watched several youtube videos and have never seen on diesel application , I did as a test and it worked very well ...
 
Reply
Old Dec 9, 2010 | 09:24 AM
  #38  
whenry912's Avatar
whenry912
Senior User
Joined: Aug 2010
Posts: 239
Likes: 0
From: Agawam MA
Originally Posted by treeclimber101
Heres a thought for a leaky head gasket last summer I noticed the return bottle was completely empty , checked the radiator on both took almost 2 gallons , filled both and noticed that there were air bubbles in the return bottle real bad , within 2 days the truck was empty again , no visible leaks and furthermore there was straight water dripping from the exhaust with no mixing or overheating or high oil level , the only thing that i could think is water straight into cylinder, so I got 2quarts of blue devil and almost 2k miles later the truck still holds water and the leaky head gasket appears to be fixed ...I have visited the Blue devil website and watched several youtube videos and have never seen on diesel application , I did as a test and it worked very well ...
Keep a close eye on it, the PO of my truck used Blue Devil, it held for a bit, then the leak came back with a vengeance and it also clogged my radiator and heater core... so just be careful...
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-1

Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath

 Verdad Gallardo
story-2

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

 Joe Kucinski
story-3

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

 Brett Foote
story-4

Top 10 Ford Truck Tragedies

 Joe Kucinski
story-5

AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

 Brett Foote
story-6

Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

 Michael S. Palmer
story-7

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-8

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-9

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

 Brett Foote
Old Dec 9, 2010 | 09:51 AM
  #39  
treeclimber101's Avatar
treeclimber101
New User
Joined: Dec 2010
Posts: 11
Likes: 0
Talking

Originally Posted by whenry912
Keep a close eye on it, the PO of my truck used Blue Devil, it held for a bit, then the leak came back with a vengeance and it also clogged my radiator and heater core... so just be careful...
Thank you will do, this truck has more than 250k on it , I will not be doing a head gasket on this engine , its seems the only residual problem is air bubbling the return bottle , although slight it is still there , which I can't figure out whether this is normal or that air is still being pushed through the head gasket , the only problem that I have with starting is the engine will freeze up like the piston is pushing water , which hasn't happened recently , but is a seldom occrence
 
Reply
Old Dec 9, 2010 | 10:03 AM
  #40  
rodneywar's Avatar
rodneywar
Postmaster
Joined: Jun 2009
Posts: 3,420
Likes: 1
From: Maryland
you might not have a bad head u might have a cavitated block
 
Reply
Old Dec 9, 2010 | 10:08 AM
  #41  
treeclimber101's Avatar
treeclimber101
New User
Joined: Dec 2010
Posts: 11
Likes: 0
Originally Posted by rodneywar
you might not have a bad head u might have a cavitated block
I am sorry but I am not familiar with that , could you elaberate at all ...
 
Reply
Old Dec 9, 2010 | 10:38 AM
  #42  
ihateminimumwage's Avatar
ihateminimumwage
Thread Starter
|
Posting Guru
Joined: Oct 2005
Posts: 2,282
Likes: 4
From: Oregon
Just search 'Cavitation' in this section, and you'll find all the info you need. Don't need this thread getting and turning into more pages of the same cavitation info that's everywhere else.

If you don't know what it is, and the truck has that many miles on it, it's a good bet that's your problem.

Actually, Here's all the info you need to know:
Cavitation Article

Now, back to the regularly scheduled program...
 
Reply
Old Dec 9, 2010 | 10:54 AM
  #43  
treeclimber101's Avatar
treeclimber101
New User
Joined: Dec 2010
Posts: 11
Likes: 0
Talking

Originally Posted by ihateminimumwage
Just search 'Cavitation' in this section, and you'll find all the info you need. Don't need this thread getting and turning into more pages of the same cavitation info that's everywhere else.

If you don't know what it is, and the truck has that many miles on it, it's a good bet that's your problem.

Actually, Here's all the info you need to know:
Cavitation Article

Now, back to the regularly scheduled program...
I appreciate the info , its incredibly helpful and its not my intention at all to derail this thread with mindless questions , I just wasn't sure if this was a result of the head gasket leak, but now reading this I would agree that may be the problem ... Thanks again , I am what many here would call a novice but enjoy being taught ...This truck has been my favorite work truck since I bought it in 92' a true workhorse ....
 
Reply
Old Dec 9, 2010 | 11:17 AM
  #44  
ihateminimumwage's Avatar
ihateminimumwage
Thread Starter
|
Posting Guru
Joined: Oct 2005
Posts: 2,282
Likes: 4
From: Oregon
No worries at all, and welcome to the site.

Motor is almost completely back together...
As far as removing the IP housing to stop if from leaking oil everywhere, it's just pull the bolts, slide it up and off (without disturbing or unmeshing the gears), clean it off and RTV it back on? Couldn't find a gasket listed online at the parts store...
 
Reply
Old Dec 11, 2010 | 03:29 PM
  #45  
ihateminimumwage's Avatar
ihateminimumwage
Thread Starter
|
Posting Guru
Joined: Oct 2005
Posts: 2,282
Likes: 4
From: Oregon
It's alive! Fired right up when it got fuel. No fluids leaking and running great.

Exhaust is leaking like crazy out the manifolds. There were no gaskets on there before, and I just bolted the pipes on and tightened them. Any trick to get them to stop leaking, can't really drive with the smoke blowing in the cab...
 
Reply



All times are GMT -5. The time now is 08:20 AM.

story-0
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-02 21:45:57


VIEW MORE
story-1
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-05-30 18:33:59


VIEW MORE
story-2
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-3
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-4
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-5
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-6
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-7
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-8
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-9
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE