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Discussion Starter · #1 ·
i need to know what engine would best fit a 1983 honda nighthawk cb650
................any suggestions
 

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Only two choices, the 83-86 CB650SC Nighthawk engines and the CB550SC engines, I forget what years those were made. I think 83-84. Engine swaps in motorcycles just aren't easy to be done, like cars. Space is engineered to fit the engine shape, making swaps near impossible unless the same engine family is used, and sometimes not even then.

Sorry to enlighten you in a negative way.
 

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Discussion Starter · #3 ·
alright, i appreciate it. nothing is wrong with the one i have, just have ideas to finish the cutomization of this nice little bike.
 
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