Hi Kev, long time no post
Not much I can help you with here unfortunately - the only rebuild I have done is on the twin cylinder Petter AVA....much the same motor but naturally enough, parts aren't often interchangable.
I managed to get a manual from e-bay and a gasket set likewise....there's still quite a good following out there. The injectors can be refurbished for around £40, and as these are a direct injection engine they will start with even low compression.
The paper oil filter element is in fact from a mk 1 Mini, and taking these engines apart is just like a (heavy) meccano set.
As for the welding unit - pretty bullet proof I would think.
John
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local