Top Dead Center

Robert Castanon

New Member
Joined
Sep 28, 2022
Messages
3
Reaction score
0
So I want to replace my valve stem seals to my 03 4.6. My question is if I set my timing to top dead center before I remove the camshafts. Would I have to find top dead center again, or will the camshaft fall into place with no issues.
 

lwarrior1016

Mr. Secondary Timing Chain
Staff
Joined
Sep 22, 2014
Messages
7,052
Reaction score
2,082
Location
South Mississippi
So I want to replace my valve stem seals to my 03 4.6. My question is if I set my timing to top dead center before I remove the camshafts. Would I have to find top dead center again, or will the camshaft fall into place with no issues.
These engines don’t time with top dead center. There is a timing mark on the crank gear that you align with the mark on the chains.

You’re going to want the crank keyway to be at 9 o’clock so all the pistons are below deck. That way you don’t bend any valves when you take the chains off. I do believe there is a good video on YouTube about setting that timing.
 
OP
OP
R

Robert Castanon

New Member
Joined
Sep 28, 2022
Messages
3
Reaction score
0
Ok, so once I set timing and remove chains and camshaft. When it's time to putting the camshaft back, will the camshaft sit back the way I removed it.
 

badass98svt

Well-Known Member
Joined
Jan 11, 2006
Messages
3,154
Reaction score
813
Did you watch the vid on YouTube? Should answer all your questions
 

apsmith49921

Active Member
Joined
Aug 5, 2020
Messages
815
Reaction score
671
my advice is 9 o clock, pull the followers, then the cams replace the seals install the cams, time it then install the followers last.
 

Latest posts

Forum statistics

Threads
76,267
Messages
1,473,282
Members
14,151
Latest member
Mustangman45

Members online

No members online now.
Top