Notices
1999 - 2003 7.3L Power Stroke Diesel  
Sponsored by:
Sponsored by: DP Tuner

7.3 Engine Re-Build Help

Thread Tools
 
Search this Thread
 
Old Aug 10, 2010 | 10:35 AM
  #1  
NSTAG8R's Avatar
NSTAG8R
Thread Starter
|
Freshman User
Joined: Mar 2004
Posts: 32
Likes: 0
From: MOBILE
7.3 Engine Re-Build Help

I need some help from readers.

I recently finished rebuilding my 7.3 diesel, had a small pinhole in #7 cylinder squirting water into it. The machinist determined it could have been due to a casting flaw. he had a couple of other machinist look at it also.

My problem is after I put in the crank the instructions told me to put the mark on the crank in the twelve o'clock position then aliagn the marks on the camshaft gear with the marks on the crank. Number one cylinder is in what I will call "mid-stroke". If anyone could verify that is the correct position of the cylinder with the two marks lined up, this would be very helpful to me in order to complete this rebuild and put the engine back where it belongs.

Thank for any help
Rad Duke
F-350 Head Replacement pictures by nstig8r - Photobucket

 
Reply
Old Aug 10, 2010 | 11:18 AM
  #2  
just another truck's Avatar
just another truck
Hotshot
15 Year Member
Photogenic
Photoriffic
Liked
Joined: Feb 2007
Posts: 10,499
Likes: 10
From: Sterling Heights,Mi
subscribing.......

I would have bet a buck that #1 should be TDC. So hanging out to learn something.
 
Reply
Old Aug 10, 2010 | 11:22 AM
  #3  
Wayne64SS's Avatar
Wayne64SS
Senior User
Joined: Jan 2008
Posts: 339
Likes: 2
From: Upstate NY
same as above. usually motors get assembled and timed cyl#1 at TDC. I've never done a 7.3 though!!!
 
Reply
Old Aug 10, 2010 | 01:59 PM
  #4  
katula's Avatar
katula
Junior User
Joined: Aug 2010
Posts: 61
Likes: 0
Originally Posted by NSTAG8R
I need some help from readers.

I recently finished rebuilding my 7.3 diesel, had a small pinhole in #7 cylinder squirting water into it. The machinist determined it could have been due to a casting flaw. he had a couple of other machinist look at it also.

My problem is after I put in the crank the instructions told me to put the mark on the crank in the twelve o'clock position then aliagn the marks on the camshaft gear with the marks on the crank. Number one cylinder is in what I will call "mid-stroke". If anyone could verify that is the correct position of the cylinder with the two marks lined up, this would be very helpful to me in order to complete this rebuild and put the engine back where it belongs.

Thank for any help
Rad Duke
F-350 Head Replacement pictures by nstig8r - Photobucket

Was the hole in the cylinder wall? If so, did your machinist repair it? ...mike
 
Reply
Old Aug 10, 2010 | 02:29 PM
  #5  
NSTAG8R's Avatar
NSTAG8R
Thread Starter
|
Freshman User
Joined: Mar 2004
Posts: 32
Likes: 0
From: MOBILE
Originally Posted by katula
Was the hole in the cylinder wall? If so, did your machinist repair it? ...mike

yes about the 4 o'clock position, he bored and sleeved it
 
Reply
Old Aug 10, 2010 | 02:53 PM
  #6  
woodnthings's Avatar
woodnthings
Cargo Master
15 Year Member
Photogenic
Joined: May 2010
Posts: 3,047
Likes: 10
From: Snohomish, WA
Club FTE Silver Member

Well that looks like #8 too me (Oil Cooler and drivers side up-pipe shown). Number one is the front cylinder on the passenger head.
 
Reply
Old Aug 10, 2010 | 03:42 PM
  #7  
NSTAG8R's Avatar
NSTAG8R
Thread Starter
|
Freshman User
Joined: Mar 2004
Posts: 32
Likes: 0
From: MOBILE
i think i got my left and right banks reversed.

all the marks were aligned (crank gear/cam gear) and the harmonic balancer mark was put at the 11 position when i installed the rocker arms.

should i be worried anymore and continue?
 
Reply
Old Aug 10, 2010 | 03:52 PM
  #8  
woodnthings's Avatar
woodnthings
Cargo Master
15 Year Member
Photogenic
Joined: May 2010
Posts: 3,047
Likes: 10
From: Snohomish, WA
Club FTE Silver Member

I would set it back to #1 and re-check everything.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

10 Ugly Ford Trucks That We Still Kinda Love

 Joe Kucinski
story-1

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-2

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

 Verdad Gallardo
story-3

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

 Joe Kucinski
story-4

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

 Brett Foote
story-5

Top 10 Ford Truck Tragedies

 Joe Kucinski
story-6

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

 Brett Foote
story-7

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

 Michael S. Palmer
story-8

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

 Verdad Gallardo
story-9

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
Old Aug 10, 2010 | 03:56 PM
  #9  
NSTAG8R's Avatar
NSTAG8R
Thread Starter
|
Freshman User
Joined: Mar 2004
Posts: 32
Likes: 0
From: MOBILE
 
Reply




All times are GMT -5. The time now is 04:32 AM.

story-0
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-1
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-2
Rezvani's Latest Post-Apocalyptic 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 | 2026-06-03 11:38:36


VIEW MORE
story-3
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-4
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-5
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

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


VIEW MORE
story-6
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-7
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-8
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-9
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