Also, the wider Mk3 oil pump seal 'bush' or 'spigot'.Yes it fits straight on but you absolutely must use the mk 3 oil pump seal,this is flat instead of conical
I have a MK3 that has never been apart beyond taking the cylinder head off.
The antisump feature still works very well, at least 2 months to drain down.
As long as I remember to start it once during winter storage, it is good to go in the spring.
So the original setup can work and continue to do so for a very long time.
Glen
Thought of doing this. MK111 oil pump seal and bush/sleeve are required. Then someone told me I should use MK111 timing gears as these are a tad thinner than previous. That's as far as I got with that project. That said , I have never had an integral MK111 anti-sumping plunger stick open. Better just to send your pump to AMR for anti-sumping work methinks.
I also think that you have to use the MK3 timing cover gasket as well.
Just found this thread searching for an answer to the opposite dilemma. So can a pre Mk3 timing cover be fitted to a Mk3 engine with just the change of oil pump seal?
Is the spigot/bush referred to, what the seal sits on?