Originally Posted by andylossie
Apart from the screwdriver down the hole is there any more tdc markings on the crank pulley once the crankshaft V belt pulley is removed, as the markings are hard to line up accuretly.
No other markings unfortunately. With no DTI dial gauge you just have to do the best you can with the markings on the crankshaft pulley / lower belt cover housing and an implement in the spark plug hole.
You would be better off using something as fat as you can in the spark plug holes (i.e. a socket extension bar) so you only have to worry about it moving up & down and not side to side as it wobbles in the hole. Just make sure it's long enough not to be able to drop down into the hole. Then lay something like a flat steel ruler across the engine and put a pen mark on the socket extension bar when the engine is close to TDC. Then use an accurate eye and your own judgement to find exact TDC getting the line to it's highest point using the ruler as a reference point. Actual TDC is obviously exactly halfway between the crankshaft rotation points where the piston initially reaches the top and when it then starts to fall again.