Setting timing

97spoolinstroker · Oct 14, 2013

How is the easiest/exact way to set the timing on my 7.3 I thing it's off from when it was rebuilt

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Magnum PD · Oct 14, 2013

Was crank gear and cam gear put at right marks?

97spoolinstroker · Oct 14, 2013

They where but at mars but
I don't thing it was done at top dead center on cyl 1

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Magnum PD · Oct 14, 2013

Never heard of that problem before.

Powerstroke Cowboy · Oct 14, 2013

If the timing marks line up it is timed right. Both gears are the same size. So one full turn for one is a full turn for the other. if the marks line up you got it right.

97spoolinstroker · Oct 14, 2013

Well on the book it said to bring it to where the marks are in the center facing each other and have #1 cyl at top dead center and the lifters should be parallel with each other and they werent

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Powerstroke Cowboy · Oct 14, 2013

With the timing marks lined up the #1 cylinder would be at TDC I think. Have you tried starting the engine?

Magnum PD · Oct 14, 2013

Why weren't they? Was a valve open?

97spoolinstroker · Oct 14, 2013

One was hire then the other so it said to pull the cam out and do a full 360 degree turn and check it and no the engine is out of the truck again

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Powerstroke Cowboy · Oct 14, 2013

If you do a full 360 turn then put it back in it will still be the same. Is there anychance the gear on the cam moved?

Magnum PD · Oct 14, 2013

Must have a lifter not going back to home position. See if its stuck.

97spoolinstroker · Oct 14, 2013

Ok I will check and ya that's what I thought about 360 lol so I was wondering

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97spoolinstroker · Oct 14, 2013

And idk if the gear moved but ever since I put the engine went back in its ran like crap

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Magnum PD · Oct 14, 2013

Was cam gear welded?

97spoolinstroker · Oct 14, 2013

I will have to look

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Powerstroke Cowboy · Oct 15, 2013

Did you ever pull the lifters out of the block?

97spoolinstroker · Oct 15, 2013

Yes the engine was completely torn down it had three pistons cracked in half so we rebuilt it

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golfer · Oct 15, 2013

Powerstroke Cowboy said:
If the timing marks line up it is timed right. Both gears are the same size. So one full turn for one is a full turn for the other. if the marks line up you got it right.

both gears are not the same size.

the cam gear is twice the diameter of the crank gear.

one cam revolution=two crank revolutions.

the cam/crank timing marks keep the engine timed mechanically..however the injection 'timing' is variable, and is controlled by the PCM.

Powerstroke Cowboy · Oct 15, 2013

golfer said:
both gears are not the same size.

the cam gear is twice the diameter of the crank gear.

one cam revolution=two crank revolutions.

the cam/crank timing marks keep the engine timed mechanically..however the injection 'timing' is variable, and is controlled by the PCM.

..........Man I feel stupid............

You are right for sure! I forgot and when i saw this i was like you dummy!! referring to me of course. Last cam i did was about 6 month ago. But still... My bad.

Thanks for clearing up this brain fart of mine.