It is true that grey market diesels fall under their own set of mandates imposed by the CARB. Meaning that just because they are a pre-97 diesel, they aren't considered the same classification as American market cars for the reasons mentioned above. Primarily because they were never designed within CARB specifications and California considers this a problem for smog.
I was able to register my HJ61 because the importer had registered it out of state for a few months, then it was brought into California. This made it look like a out of state vehicle except for the short VIN on paper. Plus the wording of the laws regarding grey market diesels were a bit more confusing back in 2014 when I did the registration. I'm not certain they would catch it even now.
I'm even more glad now to have sold off my HJ61. Another user mentions on another thread about the DMV going back through the system to see which ones slipped through the cracks. I'm not sure where he gets his info, but it was always a fear in my mind they'd start doing that and can totally picture some bored DMV or CARB employee doing this on a power trip. Although I would argue that it's entirely the DMV's fault however for ever allowing this...it did go through 2 VIN verifications and they willingly processed all the paper work after all. I paid more than enough taxes on it when it was brought in from out of state. If it's still my fault after a dozen DMV employees and one CHP officer okayed it, that would be ridiculous. I thought I was just registering another car, albeit diesel, RHD, and born in Japan, because essentially I was except for some unfounded, greedy, and xenophobic law that said I couldn't (in very fine print).
However, apparently California is mandating that
NO grey market diesels be registered even after conversion. Via the DMV website's page on direct import vehicles:
"Motorcycles, off-highway vehicles, and diesel-powered vehicles
cannot be converted to California emissions standards at this time. Therefore, they cannot be registered in California unless they were originally manufactured to meet U.S. and California emissions standards."
source:
HTVR 09A
So I'm not so sure that George at California Environmental Engineering is entirely up to speed on the bi-polar laws we have here. The only way I'd consider doing it now is if I had a home in Arizona or somewhere and could park it there every so often. Sounds like the loophole might be officially closed these days, and it would be risky to try registering any grey market diesel in California.