I'm considering buying a 147 1.9 JTDM 16v with cambelt failure, which I would repair myself. It appears to have been age-related failure of the waterpump within service mileage for the belt = bang. I'm trying to work out the likely parts cost and whether it makes sense. So:
1. Does failure on this engine ever imply head and/or piston damage? I know the 16v valve gear is designed to collapse and protect the internals, but does it always work out that well in practice - eg if the failure happened at speed?
2. Is there any reason to replace big end shells, like on the petrol engines, or does the sacrificial top end design prevent heavy contact?
3. I know I can expect to replace some of the valves, rockers and tappets, but from reading this forum AR changed the design of the tappets a few years back with the result that the parts bill more than doubles. Are the old collapsible type still available from anywhere? If so, where? Are the old type still found on any of the Fiat or other versions of the 16v diesel?
4. Do I have this right that AR for some Italian reason didn't bother with anything as helpful as timing marks, and that timing the cam has to be done with a dial gauge for TDC, and what special tools? Is there documentation of timing procedure anywhere on the web? Or for that matter does the Eper manual give it?
Apologies for the many questions, but I read most of the humungous 31 page thread at http://www.alfaowner.com/Forum/alfa-...ngines-31.html
and the above are not clear. Didn't think it appropriate to post into that thread as it's collecting reports of failure rather than how-bad-and-how-much.
Basically if I can keep the parts cost to less than about £500 I end up with a good deal for a couple of days work. If it's potentially much more, I'd do better to buy one that hasn't been pre-broken. TIA for your help.