I’m making progress on the 3.8 engine rebuild, but running into more difficulty with replacement parts. I was going to install the chain tensioner today and found it deficient. The tensioner body should have a machined bushing that presses into the hole in the block which houses the filter cone. The part, carrying Jaguar/Land Rover proprietary logo on the box, but no manufacturer’s stamp did not have this bushing. This was not a cheap part, now selling for about $100 (if there was any stock - there isn’t). There is a small drilling in this bushing which allows graded oil pressure/flow to the plunger, so this new piece had no regulation of oil flow - does it matter? See the photos below. I was not comfortable with this piece and reused my old plunger apparatus (Renold brand GB), which showed only minor shoe and plunger shaft wear.
I also removed the new upper chain dampers and reused the old because of the problems identified previously on this site.
You can see that the new chain damper on the left has the tight bend noted as a problem on previous discussions.
This is not making the job any easier, but at least I have a say in what goes in my engine, as opposed to just sending it off. Not my supplier’s fault - they sell what they can get, but I’ll be feeding back.