Top Dead Centre on 1600 engine

[Christopher Marsden]

Can anyone please tell me which of the two marks on my flywheel I should use to get No. 1 cylinder to Top Dead Centre, left one or the right one?

[PhL]

With a screw driver in plug hole 1 or 4 you can tell and align with the clutch case marking.
If i had to guess i'd say the right one because the left one could be for the static advance ignition timing (5 to 10° usually).

[Christopher Marsden]

Many thanks I will try that and see what happens.

regards

[Gordi94]

Bonjour

Ce volant moteur à double index était principalement installé sur les 807-12 et 844-12, il comporte un repère PMH et un repère 8° d'avance.

Il permet le calage au ralenti de l'avance centrifuge sans lampe à déphasage, il suffit pour cela d'aligner le repère 8° du volant sur le repère 8° de la cloche de boite, on obtient les 16° nécessaire au ralenti (1000 à 1100tr/mn suivant les MR et RTA) avec une courbe R267 ou R278.

Vue sous cet angle le moteur tourne dans le sens anti horaire, le PMH se trouve le plus à droite (merci PHL).

GORDI94

[Christopher Marsden]

This is very interesting, thank you.

Regards

[Christopher Marsden]

Further to your reply my distributor is the 4266 with the R234 curve, as stated in the MR Type A110. I have just had it converted to 123ignition due to wear in the shaft and problems with the bob weights and springs. It has been programmed with the R.234 curve. I understand that the R267 and R278 refer to the A310VE and A310VF models respectively?

regards,

[PhL]

The 123 is perfect and honestly the difference between these curves is practically NIL!

The only serious parameter to watch is:
no more than 32° (34?) maximum advance.