Like Jagy said, SR20VE and RR crankshaft assembly are the exact same. I see Nissan listing the weights as:
SR20VE: 31.5172 lbs. (14,296 grams/ 504.276 oz.)
SR16VE: 32.9150 lbs. (14,930 grams/ 526.640 oz.)
SR20VE (20V): 37.9195 lbs. (17,200 grams/ 606.712 oz.)
Last edited by B15NEOVVL
on 2012-02-19
at 16-44-39.
Reason: Updated