Take it to an independent Jag mechanic and ask for forgiveness.

 

If I remember right, there is a baffle in the valve cover behind the breather hole. You might just have poked a hole through that and could just leave it or remove the valve cover and fill the hole.

 

are youre talking about the metal baffle under the part load orifice in the cam cover, how big a hole? Did you drill through it? or did you push out the orifice in the cam cover?

 

if you need an oil seperator I have one in the box from "cusco" I purchsed for my track car project and never even took it out of the box. PM me if you want it, I will cut you a deal.

 

So is the orifice of the partload breather only visible upon removal. And all you will be doing is cleaning the crud that builds up while contained under the valve cover?

I'm trying to wrap my brain around what you are really doing. In my head now I picture a part with a 90 degree bend that clogs from inside the valve cover. And in order to clean the air way you need to use a 7/64" drill bit to ream the hole clean?

Rather than reaming can you use a solvent, MAF cleaner, to do the same thing?

Just trying to understand!

 

You just use a small drill bit by hand to clean the orifice, and no carb cleaner etc wont clean if plugged, it hardens. Thats why jaguar said to clean by hand with a drill bit years ago when we first had the issue.

 

'Less than 1/8" = 3/32"

Gunk is really hard! Makes a big difference.

 

As I have read, the Lincoln LS uses the same block, only at 3.9 liter instead of 4.0. As time goes on, mabe some Nikasil blocks will be replaced with motor pulls from whacked Lincolns. I gotta '03 4.2 .. but did alot of reading ... just in case. Don't know if the Lincoln uses the zf tranny, but sleeving a 4.0 has gotta be a costly and mediocre endeavor. Also, Ford machines their engine bores eliptically in tenths (0.0001's) so it's not likely that a sleeve job would give you the best results in any event.

This probably doesn't apply to Jag owners, but I do know that "seasoned" engines that have been over-heated, can get ring sieze .. certainly contributing to blowby. An old-timey remedy, is a few ounces of Marvel Mystery Oil in each cylinder soaking overnight. Just thought I'd through that in, since "additives" were mentioned here in this thread. Have fun, Be Safe