Twin Port engine differences

[OliTom]

Evening chaps,

We're new to the world of vw after the purchase of our 71' dormobile a few weeks ago, and still got the cheesy grin and looking out the window every time I walk past just to look at it sat there.

Anyhow, I was just wondering if there was any difference between the 1600 twin port engines.

EXPLAINED:
A previous owner has changed the engine in mine but haven't told the DVLA (which I'll do shortly) so I know what was in and obviously what is in. The engine on the v5c an AD code and the engine I now have is an AS code. From what I've researched, they're both TP but AD up to 73' and AS after. Is there differences other than a vague manufacture date? If not, why the change of code?

Unfortunately, very little history came with him, so my extensive researching head is also on. Just filled out a V888 to try and blag the names and addresses of all the previous owners to write too.

 

[Trikky2]

The differences are minor (such as the distributor for instance)

As far as the dvlc, insurance and the vehicles performance is concerned, there is no difference.

 

[OliTom]

Thanks, I didn't think there would be much if I'm honest. The only reason for informing the DVLA is that the engine number is printed on the v5c which is now incorrect.