Yeh, Nikki, been a few of them floating around recently. I have on in me garage, but I cannot find any details on how to set them up etc… All I have is an exploded parts diagram which I found on the web…
If anyone has got some jet setting details etc.. then would be much appreciated… I suspect the’re faily similary to the down draft webbers and dellorto’s , twin choke etc…
Best thing to do with a Nikki is bin it, they were not very good when new let alone 30 yeaars later.
IIRC you could not get any alternative jets for them. But they are very simalair Hitachi Carbs as fitted to toyotas and datsuns, might even be the same.
these have been featured in miniworld twice and both times the technical advice person said they were rare but no where near as good as an su as there badly designed etc