I found these in my oil pan not sure what they are or where they came from.

[will11230]

These were between the front main bearing cap and the block and in the oil pan. Maybe came from timing chain area. It looks like there was a head on both ends but one got worn off. The engine sounds fine, no knocks or ticks and there is not any visual damage. Maybe someone has seen this or can help. The engine is a 2.25 petrol in a 73 series III. Thanks

[albersj51]

Do you have any missing/damaged pushrods?

[will11230]

I dont think so. Engine still runs fine.

[JimCT]

rivets

perhaps rivets that hold the tension block for the timing chain?

These were between the front main bearing cap and the block and in the oil pan. Maybe came from timing chain area. It looks like there was a head on both ends but one got worn off. The engine sounds fine, no knocks or ticks and there is not any visual damage. Maybe someone has seen this or can help. The engine is a 2.25 petrol in a 73 series III. Thanks

[acamato]

Almost looks like a timing chain pin. I am not familiar with the series motors.

I tried looking for a photo of a 2.25 timing chain and found this.
http://www.johncraddockltd.co.uk/land-rover-defender/defender-90-and-110/parts/engine/engine-2-25-petrol/etc5191g-ae-timing-chain-2-5-litre-petrol-and-late-series-3-2-25-petrol.html

Maybe someone knows if the pins are mushroomed over or straight.

[will11230]

They look like rivets. Is this an expensive fix? Im guessing this is something i should look into before it causes more problems.

[will11230]

It could also be a timing chain pin. I will have to take the cover off and take a look.

[SafeAirOne]

It could also be a timing chain pin. I will have to take the cover off and take a look.

DISCLAIMER: I don't own a 2.25 engine and my 2.5 doesn't use a timing chain, but based on your photos, if those were timing chain link pins, I'm pretty certain that your chain would be in 3 pieces by now and your engine would be a complete mess.

Aren't the older front main (crankshaft) seal dust cap assemblies riveted on? Isn't that the conversion where everyone drills them out and screws them back on for ease of maintenance? Are these the same type of rivets as that?

Like this image from this website shows:

[o2batsea]

Yes, Mark, but it begs the question of how they ended up in the pan.

[I Leak Oil]

Someone did't remove the front cover, drilled them and pushed them in? But for some reason I think the domed end is on the outside of the mud shield though.
Quite possible that the timing chain tensioner pad is now without it's fasteners as someone mentioned too.

[SafeAirOne]

Yes, Mark, but it begs the question of how they ended up in the pan.

Good point. I doubt the INSIDE (shop head) of these rivets are round like the factory heads, so they probably weren't 'poked through' during a lazy seal replacement.


PLUS, I think the rivets in the OP are probably a smaller diameter than the dust cap rivets, though it's iffy trying to get a sense of scale in the dust cap pic.

[Boston]

Best guess is if the sump was removed and these got on but weren't removed while it was off.