[ermax]

Originally Posted by Tcoat

I don't think I am explaining it well. The timing cover requires massive amounts of sealant. Some of that sealant can either break off and float around in there or be forced over passages when the cover is installed. All of the oil that goes into the car enters and passes through that big open area and those passages. It would not take a whole lot of sealant to block a passage enough to reduce flow and pressure on an engine that already has fairly low flow and pressure. The video I linked explains this concern very well even if he doesn't specify sealant and just refers to "gunk".
Is it because it is just to easy an explanation that people are convinced there must be something else and they are on a quest for a more complex mystery cause? Sometimes the easy explanation is right. I have followed these failures for 5 years and based on the info at hand this explanation just makes sense.


http://www.ft86club.com/forums/showt...ne#post3054764 Post 22
http://www.ft86club.com/forums/showt...45#post2210345 Post 158
https://www.ft86club.com/forums/showthread.php?t=107959
http://www.ft86club.com/forums/showthread.php?t=121863
https://www.ft86club.com/forums/show...51#post2825351 Post 133

The packing on the timing cover only gets close to one oil hole to the right hand head and even that one has a decent size gap between it and the packing. The packing also have a grove that the packing sits in which should keep it someone isolated. You would have to go crazy nuts with the packing to get it to bleed into that gallery. The only other thing the packing routes around are the 32 bolt holes.

Here is a clip from the manual. There are some places with packing in the middle of the cover that people may confuse as oil galleries but they are not. I marked those in red. They are just bolt holes. The one and only oil gallery near the packing I marked in green. The only other gallery in the timing cover is the pickup from the pan which you can see is very far from packing.



All I am saying is I don't see the timing cover being the big risk with regards to packing. It's the block halves and the heads.

Edit: That MRT video you linked to is the one I was referring to in my other post. Look how hard he pulls at that packing to break it loose.

The first post you link to is talking about the #4 main being blocked isn't even near the timing cover. It's caused by over packing the block halves which I've already pointed out.
The second post does support your theory where they say packing blocked the gallery marked in green in my image.
The third post you link to is talking about the same area that your first link was talking about. It's between the block halves.