Originally Posted by sevenup85

Hi everyone,

I am from France, I am sorry if my english is not perfect or if I make any strange mistakes by typing my messages lol I am new to the site and happy to have found this forum as I just bought an rs cosworth from 1992 YB engine blue cover I am very happy with it and decided to make a complete checkup including timing belt and water pump (the basics).
My question is on that subject and here is the summary of what I noticed and would like to get your advises

Before dismantling the timing belt, I decided to put all the marks to the original points as per the manual to make sure everything was ok.
The camshafts points to each other as per as indicated in the manual.
The auxiliary pulley, the pointer points to the centre of the half moon on the auxiliary shaft cover as per indicated in the manual.
The crankshaft pulley has 4 lugs at 90 degrees each and one notch. On my car, when the above mentioned pointers are placed, the pointer from the engine points at the notch.

On the manual, concerning the cranckshaft pulley, they say that the pointer needs to be bang on the left edge of the lug when camshafts and auxiliary pulley are pointed like it is on mine.
The notch is for 16 degrees BTDC and not for TDC.

1. how come my car worked this way as the pointer is placed on the notch instead of the left edge of the lug?
2. what shall I do when putting the new belt? pointing everything as it was or just putting back everything as per the manual?
3. Do I need to do anything to ignition timing?

Thanks for your answers and hope I was clear on my explanations Cheers