I've got a 16 speed Fuji road bike with a, Suntour, eight speed casette. The crank is a Sugino that cosmetically, looks a little rough. I have a really nice looking Sugino RS crank from a 12 speed bike (six speed Shimano freewheel). I'd like to transfer the cranks from the 12 speed bike to the Fuji, but I'm concerned that the chain rings will have slightly wider teeth and may not work with the eight speed chain. Will the older chain rings work with the newer eight speed chain or will the chain hang up, especially when shifting.
I have provided pictures of the two cranks below.
One more comment, the chain rings have different bolt patterns so swapping the chain rings on the cranks is not an option.
Thanks in advance for all responses.