Help to identifying engine type

[jedwards]

Dear Land Rover experts,

I have been struggling to identify my engine, and am hoping for some help so I can move forward with the rebuild with certainty.

At some stage in the past, the block of my 1953 Series 1 80" was damaged and replaced with a new LR supplied block (supplied without an engine number stamped, as was the norm in those days) . The replacement block receiving a new engine number courtesy of the NSW Police. The new number (stamped on rear left of the block ) is N602166P, which may or may not be the original engine numbers.

What is certain, is that I have a centre exist exhaust Manifold, a cartridge Oil Filter under the carburettor and a domed breather on the rocker cover. I believe that all points to a 2 litre Siamese bore motor.

Can someone please confirm this for me from the images attached?

Many thanks
Jeff

[gromit]

Dear Land Rover experts,

I have been struggling to identify my engine, and am hoping for some help so I can move forward with the rebuild with certainty.

At some stage in the past, the block of my 1953 Series 1 80" was damaged and replaced with a new LR supplied block (supplied without an engine number stamped, as was the norm in those days) . The replacement block receiving a new engine number courtesy of the NSW Police. The new number (stamped on rear left of the block ) is N602166P, which may or may not be the original engine numbers.

What is certain, is that I have a centre exist exhaust Manifold, a cartridge Oil Filter under the carburettor and a domed breather on the rocker cover. I believe that all points to a 2 litre Siamese bore motor.

Can someone please confirm this for me from the images attached?



Many thanks
Jeff

It's a Siamese bore.

Difference between Spreadbore & Siamese (https://www.aulro.com/afvb/series-i-land-rover-enthusiasts-section/173984-difference-between-spreadbore-siamese.html)


Colin

[101RRS]

Colin - I just googled pics of both engine types and the one in the first post is a spreadbore - in the siamese engine, pots 1 and 2 and pots 3 and 4 are much closer together.

This is the siamese - bores are much closer than the pic above
162469

This is the block from above - bores are wider apart = most obvious at pots 3 and 4.
162470

[gromit]

Colin - I just googled pics of both engine types and the one in the first post is a spreadbore - in the siamese engine, pots 1 and 2 and pots 3 and 4 are much closer together.

This is the siamese - bores are much closer than the pic above
162469

This is the block from above - bores are wider apart = most obvious at pots 3 and 4.
162470
Maybe you're right, I thought there was much less of a gap between 2 & 3.
I've never had the head off mine to know what the spreadbore actually looks like.

Colin

[101RRS]

I dont know - was just comparing pics - I have two spreadbores and one siamese and have not had the heads off any of them. I must admit that until I saw these pics I thought it was the distance between cylinders 2 and 3 that was the determinant - narrow being siamese and wide being spreadbore - so it just goes to show how much I know [bighmmm]

I am sure the gurus (I thought you were a guru) will be along soon to clarify. [thumbsupbig]

Garry

[cjc_td5]

My siamese bore 2.0l has much less wall between 1-2 & 3-4 than the OPs pics.

[gromit]

I dont know - was just comparing pics - I have two spreadbores and one siamese and have not had the heads off any of them. I must admit that until I saw these pics I thought it was the distance between cylinders 2 and 3 that was the determinant - narrow being siamese and wide being spreadbore - so it just goes to show how much I know [bighmmm]

I am sure the gurus (I thought you were a guru) will be along soon to clarify. [thumbsupbig]

Garry

Looking at the pictures on a computer, rather than a phone, you might be correct.
The link I posted showing the head gasket for a spreadbore on a siamese shows that it's not a big difference between the two.

Thanks for thinking I'm a 'guru', my wife just thinks I'm sad.


Colin

[russellrovers]

Dear Land Rover experts,

I have been struggling to identify my engine, and am hoping for some help so I can move forward with the rebuild with certainty.

At some stage in the past, the block of my 1953 Series 1 80" was damaged and replaced with a new LR supplied block (supplied without an engine number stamped, as was the norm in those days) . The replacement block receiving a new engine number courtesy of the NSW Police. The new number (stamped on rear left of the block ) is N602166P, which may or may not be the original engine numbers.

What is certain, is that I have a centre exist exhaust Manifold, a cartridge Oil Filter under the carburettor and a domed breather on the rocker cover. I believe that all points to a 2 litre Siamese bore motor.

Can someone please confirm this for me from the images attached?

Many thanks
Jeffhi its a spreabore

[jedwards]

I came across these images of the Head gaskets for the Siamese and the Spreadbore engines on Gaskets for Classics in the UK.
Apart from the distances between 1 and 2, and 3 and 4 pots, the other distinctive difference are the waterways in the centre of the gasket. The Siamese Gasket provides one waterway and the spread bore gasket provides 2.

Can anyone tell us the significance of this?

thanks
Jeff

[Lost Landy]

If it has an oil filter under the inlet manifold then it is with out a doubt a later 2lt with the full flow oil filter.
The 2lt siamese has a by-pass oil filtration system on the LH side of the engine bolted to the block just in front of the starter motor,
It has 2 small oil feed lines ne entry the other is a return.
Hope that info helps

[cjc_td5]

If it has an oil filter under the inlet manifold then it is with out a doubt a later 2lt with the full flow oil filter.
The 2lt siamese has a by-pass oil filtration system on the LH side of the engine bolted to the block just in front of the starter motor,
It has 2 small oil feed lines ne entry the other is a return.
Hope that info helpsYes I was going to mention that too. Cartridge oil filter is definately the later spread bore engine.

[Summiitt]

When did they change? my 52 (Aug51 Build) by these descriptions is a spread bore, yet I always thought it was a siamese??