International Lancia Forums

hi, this is my first post, i have a rough running s4 1.8 1985 lancia. it has been stored for years, and the plugs removed were triple electrode ones. i called lancia / alfa romeo and they have no records prior to 1990 for the u.k, omicrom engineering were just rude, the chassis number is zla038ar000000009. can anymone tell me what the car should have left the factory with, not whats in it now, also all the intake side of things seems ok, but between 3.5 and 4 thousand revs it backfires like nobodys business.....help please kind regards and thanks

If it is an S4 (super and turbocharged) I think you will struggle to get much information here. Most of the knowledge of these very specialised cars lies in Italy. I would ask on the Italian language forum on here. There are a couple of posters there who have S4's.
You could try Walkers garage in the UK. They used to look after one I think.

http://www.walkers-garage.co.uk/

ask to VOLTA in italy see on google