What kind of engine will propel this little car? Originally it came with an air cooled 1.5 litre flat-4. It had to air cooled, cheap, reliable and able to handle some power. The choice was and Type 4-engine found in seventies VW buses, 411/412 and the VW-Porsche 914, why type 4?. Luckily only about one kilometre from our summer house was small junkyard and I was able to find a mid 70:s bus still with engine in it. The engine was a 1.8 litre, code AP, with the biggest valves for the Type 4 outside the 914, 41 mm intake and 34 mm exhaust valves, a stroke of 66 mm and cylinder bore of 93 mm. At first I was just going to stick it in my 1303S, but it turned out to be a lot harder and more time consuming then I expected so it was put on hold for a while.
Bye the end of summer 2007 I had made up my mind about the first stage of the engine. It was getting new piston rings, bearings, oil pump, oil galley plugs, harder valve springs and a little better camshaft since the engine was in pretty good shape. I'm going to gently remove some imperfections in the ports so air flows better and maybe try to port the exhaust side. The fuel and spark will be delivered via MegaSquirt'n'Spark engine management system, ignition will by of wasted spark type with components from a 90:s for Escort.
This will be topped with a turbo system, consisting of a turbo from a SAAB 9000 originally having 175 hp, this may actually be a little to small down the road my it should work ok for now, and a large intercooler lying in position over where the rear seat ones was.
Here follows some pictures that are a little older than the current project. The oldest pictures are at the top.