I see in a post from 2007:
http://www.opelgt.com/forums/6a-engine-mechanical/8812-opel-springs-big-valve-head.html
That RallyBob commented:
FYI, stock spring installed heights on a 1973 1.9 engine are:
Intake: 1.57" - 93 lbs
Exhaust: 1.36" - 97 lbs
Can anyone tell me what the installed spring...
I'm in the process of figuring this all out. My plan is to retain the stock 2.4 EFI system and swap the 2.4 manifold for a cut down 3.0l with a larger throttle body. The engine arrived to me with the manifolds and all wires disconnected. I have the complete wiring harness and ECU. The engine is...