300tdi Ring gap orientation

Hi Mates,
Been a while since I was here, hope you guys all doing great.
I have been busy but working on the landy's engine between other projects.

I have bored out the block to 40 thou, bought a set of All Makes pistons and rings.

I have been looking up the ring gap orientation, some saying to use 60 degree, some 120 degree separation away from the thrust side of the pistion.

We went with 60 degree for the two top rings, I am assuming that the oil ring gap has to be away from the trust side too, can you guys confirm please?

I know it sounds like a redundant question due to the fact that 60 degrees apart would keep us away from the thrust side, but just wanted to ensure that the oil ring must be away from the trust side too.

Thanks and Cheers.

TBH I just fit them equally spaced and dont worry about it, also they do move in service so wont stay the same for ever.

Hi Lynall,

Thanks for the reply. My mate who is working on the engine with me agreed, that the oil ring should not make a difference if it sits on or close to the thrust side.

We installed them 60 deg apart with the oil ring gap close to the thrust side, but after seeing some many conflicting info on the net and instructions lacking in the overhaul manual, I wanted to confirm.

So many were adamant that they're should be no ring gaps placed on the thrust side of the piston causing me to wonder.

My mate here built a lot of FI engines too, and we both agreed that it should not be that critical, I don't doubt his expertise at all, but you never know with Landy's lol...they are special

Thanks for the replay mate, always helpful as usual.

Cheers.