i'm not sure you can ....to slacken the belt you have to get the lower belt cover off and to undo all the bolts on the cover you have to remove the crank pulley..
if my memory serves me correct ..
A forum community dedicated to Nissan Skyline GTR owners and enthusiasts. Come join the discussion about performance, mods, troubleshooting, body kits, classifieds, maintenance, and more!