identifying motor and heads Options

[914fun]

This number is on the side off a motor I have: SI 12 004.101.102A 10 0 22H. Can I tell what motor it is with this number? I need to know if it is a 1.7 or a 1.8. also this number is on one head: 171158.

[914fun]

just a update. I took it apart and the cans do not match the heads. the outer lip on the cans are 100mm to the outside and the heads inner measurement is 105. So the head gasket was being pushed out to one side making the can so it hardly sat on one edge of the gasket. and so thats the side that blew out of course. it looks like the previous owner put on 1.7lt cans and had them board out for the 93 mm 1.8lt cylinders. The heads being 105 makes me think they are 1.8lt heads but the exhaust studs are 8mm on both sides like a 1.7. so im not sure what head it is. If they are 1.7 heads then why open them up to 105mm and make a mismatch with his 1.7 heads? it looks like there is a crack in the head by one of the valves so it trash anyway, right? What mess. I guess its time for new heads and pistons and cylinders. That sucks, I thought I was going to replace a gasket and be back on the road. Anyone have some used not cracked 1.8lt heads? I will by new big bore 96 p/c I think. I will try to post some pics.