I have picked a inline twin engine and do not have a clue what it is looks to be close to 80cc. The pistons fire opposite from each other need 2 pickups and 2 ignitions it also has the 10mm plugs so its not super old. any help from you guys in much appreciated.

I believe you have an early 3W in line. The cylinders look like the cylinders on my 3W60k engine so it could be a 120 Does it say Heindel anywhere on the case ?

It's an old 3W 80 inline engine.

https://www.flyinggiants.com/forums/...d.php?t=207036