X/Flow Ignition Timing Marks on Block(Graduations)

[A7 OOH]

Can someone help me with regards to the timing mark graduations on the right hand side of the engine block (facing engine)

I can see the marks which are highlighted in white what I want to know is what the graduations are in respect of degrees before TDC.

Facing the engine and moving in a clockwise direction what are the graduations and what do the represent.

No simple diagram in any of the build manuals.

[OldAndrewE]

The marks on mine are on the timing cover, not the block.  Is this what you mean?  Diagram from Haynes manual below

[orangepeel61]

That doesn't look right to me, the Mexico must be different, mine is like this (taken from Haynes escort manual)

If its not clear: the marks are, from the bottom, DTC, 4, 8 and 12 Deg.

 

[Ian Macquarie]

Orangepeel61 beet me to it - I was just about to say the same. #3 is how mine is.

 

[OldAndrewE]

OK, mine is not a Caterham supplied XFlow

[A7 OOH]

Thanks to all.

Exactly what I was looking for.

[AnkerB-S]

I find it difficult to believe that some Xflows rotate in one direction while others rotate the opposite way. Mine works as orangepeel61's picture,

[OldAndrewE]

Anker, they are not opposite direction - both diagrams show clockwise rotation viewed from the front.  Just different age of engines.  I think my engine must date from the 1970s (it came out of an old grasstrack racer I bought for the engine and gearbox)

[AnkerB-S]

My bad! Misread the diagram.