What happened is that they knew they had Opel numbers because they've ground an Opel crank before. So they loaded up the crank on the grinder and went to look for the numbers. They said 70mm
I'm sure this is the conversation...
Hmm, 70mm? That looks wrong. Check it again...
But, this crank is longer throw than that. It's a weird number. It's not 77, it's not 78. What's up?!
Find the numbers!!
I don't see anything but 70mm!
Call the guy who sent it in!!
And so they called me but I didn't know the throw of the 2.2. I'd seen it but didn't know. And I didn't have time to look it up so I called the people I knew would have the answer and they did! Problem solved.
Unfortunately, the grinder driver didn't drop the crank off at my machinist shop today. So, now it's Friday that I pick it up.
Me? Worried? Nah. Last time I had an Opel crank ground it took them three weeks to get to it. And then the guy ground it while I waited at the counter. Took all of 10 minutes.