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Photos 2006 4.0 cam timing

wolfmangk

New Member
Joined
August 15, 2025
Messages
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City, State
Prescott, AZ
Year, Model & Trim Level
2006 Explorer 4.0
I had a head gasket failure due to overheating. Took care of the overheating problem. Warped heads. Got the heads resurfaced, valves lapped, new seals gaskets etc. I bought the camshaft alignment kit, and tried the passenger side first, but quickly discovered there is an issue.

There is a gap between the kit adapter and the cylinder head. The adapter insert only goes in the camshaft one way.

I tried rotating the camshaft 180 degrees, but then it's no longer flat. The camshaft wants to "rest" off kilter, not flat. I don't think this is right.

But, on the driver's side cam, the adapter kit sits level and perfectly flat.

Does anyone have any advice or help?

I watched a YouTube video where a guy says there are flat parts on a lobe on the cam, when at "rest" the lobe is flat, just seems "Upside down". To expose the other flat side on the driver's side the cam is pushing one or more valves down and doesn't "rest" flat if they makes sense. I can try to get more pictures if they are needed.

Any help is greatly appreciated.
IMG_20250815_114345194_HDR.jpg
 






I had a head gasket failure due to overheating. Took care of the overheating problem. Warped heads. Got the heads resurfaced, valves lapped, new seals gaskets etc. I bought the camshaft alignment kit, and tried the passenger side first, but quickly discovered there is an issue.

There is a gap between the kit adapter and the cylinder head. The adapter insert only goes in the camshaft one way.

I tried rotating the camshaft 180 degrees, but then it's no longer flat. The camshaft wants to "rest" off kilter, not flat. I don't think this is right.

But, on the driver's side cam, the adapter kit sits level and perfectly flat.

Does anyone have any advice or help?

I watched a YouTube video where a guy says there are flat parts on a lobe on the cam, when at "rest" the lobe is flat, just seems "Upside down". To expose the other flat side on the driver's side the cam is pushing one or more valves down and doesn't "rest" flat if they makes sense. I can try to get more pictures if they are needed.

Any help is greatly appreciated.
View attachment 466751

Can anyone show me the passenger side camshaft when the engine is at TDC and cams are timed? What the lobes look like? The notch? I am not even sure I have it right. But I think I do? It's an interference engine and I don't want to be wrong.

I forgot to add, that this engine seems to use a different set of orings for the fuel injectors. Two different sized orings. The kits I've purchased for it including the top end gasket kit have all set size orings. Does that make this engine different than other 4 liters? I don't know.
 






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