Ok, well I have sort of an unusual problem that I have never encountered. A few months back I got a complete 88 D16a6 motor from a friend who did a b16 swap. The D16a6 had no internal work whatsoever. Then about a month ago, I picked up another 88 D16a6 motor from someone else. All it was missing was a crank pulley and throttle body. This motor as far as I know has never been modified internally. So tonight I took the crank pulley off of the first D16a6 motor and went to put it on the second D16a6 motor and it would not fit. The inside of the crank pulley was too big and even with the key in place, the crank pulley would just spin on the crank. So, something doesn't add up. Either the crank is different or the pulley is different. I don't understand it considering both motors are stock and from the same year. I am wondering if people ever change cranks on these motors? Maybe a ZC or a D15? I don't see why they would, but who knows.

 

anybody have any ideas?