Who could tell me where the oil gallery feed for the lifters is on a 4.0L I6?

Is it near number 2 cylinder?

215 000k's
Just that the other day started car and gave it some hard rev's while cold(I know not a good thing to do but needed to get back at neighbour) it started to blow alot of white smoke and didn't stop till after driving gently for a few k's then no signs of any smoke when nailing it.
I have had people that have followed me at times and they have said it blows some smoke when I nail it.
The spark plugs all looked good except number 2 which was of different colouring but not oily or carboned up.
IT IS USING ABOUT 2-3L PER 5000K'S.

What Iam thinking is the gasket isn't sealing the oil gallery real well as when the oil pressure increases it starts to leak into cylinder.
Thus when it was cold it would have had less clamping due to being cold (contracted) and oil pressure being higher when cold.

Has anyone had similar prob which was related to the gasket?

Is it getting harder to start? ... you'd better be careful or you will get compression lockup in your piston pots and start to bend rods.

The oil leak isn't that bad to fill cylinder as it doesn't make the sparkplug oil up.
So I take it that the plug is burning the oil completely.

When it is warmed up from drivers position you can't even see any exhaust smoke.

But it is using oil (no external leaks).